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117 Cards in this Set
- Front
- Back
Someone who feels sad and then happy goes and buys a bunch of stuff what drug would you want to tx them with?
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you would want to give an anti-psychotic (lithium, carbamazepine, & valproate)
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What drug can you use for simple, complex partial seizures, bipolar disorder, & trigeminal neuralgia
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carbamazepine
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this drug treats tonic-clonic seizures, mood disroders, and if preggo can cause neural tube defects
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valproate
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someone has a tremor and they blame it on the voice in there head what can you give to treat this?
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probabaly drug-induced Parkinson's caused by an anti-psychotic, give them an anti-muscarinis "park your mercedes- benz" benztropine
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what kind of drug is paroxetine?
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serotonin-reuptake inhibitor makes manic worse
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Bupropian is what
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dopamine and NE re-uptake inhibitor, used for depression and stopping smoking
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PCA supplies which regions of the brain
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comes off the basiliar at pontomesocephalic junction supplies the thalamus, tedial temporal lobe, splenium of corpus callousoum, para hipo gyrus, fusiform gyrus, & occiptal lobe
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anterior chordate artery supplies
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is last branch of internal carotid before trifurcation, post limb, gen of internal capsule, optic tract, lateral geniculate body, choroid plexus, uncux, hippocampas, & amygldala
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good pic to know
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Strict diets to lose weight devoid of a vitamine is likely?
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think vegan- B12 cobalamin, causes megaloblastic anemia..take years to see a problem bc tons in the hepatic storage
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Most water soluble vitamins flush out the body
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FAST except for cobalamin & folate
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tibial hematomoa & painful gums in a 79 yo poor woman your thinking?
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Vit C defieicieny, ascorbic acid- from fruits (poor homeless ppl wont have that) scurvy: hemorrhage, subperiosteal hematoma, bleed, gingivial swelling
also important to hydroxylase prolyl and lysyl--> precollagen |
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Folic acid deficicney you would see
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megaloblastic anemia & neural tube deficients
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Zinc deficiency you would seee
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growth retardatsion/infertility and acrodermatitis
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2 mutatnt strains no problem, but together they make progeny that becomes virulent this describes
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recombination (genetic) 2 viruses must exchange genes for their progeny to change that much
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host cell co infected and they exchange whole genome, sudden change describes?
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reassortment
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Uptake of naked DNA in prok/euk describes?
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transformation
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inhibition one virus replication and release describes?
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interference
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describe how morphine works
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activates mu opiod receptors, which is a G-protein linked so has many secondary messengers...K+ conductance increase the efflux so you hyperpolarize and terminate pain, close Ca2+
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immigrant with fever, rash, face travels to body and lyphadenopathy behind the ears
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thinking no vaccine for measle, mumps, rubella, rubella presents with a rash, face--> trunk/extremities...fast spread- no darkening, lymphadenopathy is rubella too which is caused by togavirus!
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bean-shape bacteria appears in an army person how did he get this?
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nasopharynx--> blod--> choroid plexus--> meninges transmit by respiratory droplets
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polydraminiosis appears in pregnant lady what are the likely causes
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Gi obsturction (duodenal, esophageal, intestinal atresia) or anencephaly
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What is seen with a baby in the womb w renal agenesis?
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severe oligohydromanisos ( too low) potter's syndrome
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Normal thryoid gland exists in anterior neck lower in fron of the upper trachea & larynx...thyroid gland is an outpouch that descends- remaining forms the
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thyroglossal duct
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What happens if the thyroid fails to migrate?
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you form thyroid in the tongue "linguial thyroid" or "thyroglossal duct"
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What should surgeons be catious of when removing a thyroglossal cyst
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it may be the only thyroid hormone a child so can cause severe hypothyroidism
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Common signs of 3 mo old w hypothyroidism
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dry skin, constipated, mass appears in throat, hard to swallow, Macroglossia,
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foramen cecum t is a normal remenant of what
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thyroglossal duct
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Failure of GnRH to migrate from olfactory is
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kallman's syndrome
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tested fail to migrate to scrotum is
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cryptorchidism
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What does sensitivity measure?
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#True (+)/ patients w dz. (TP+FP)
ability of test to tell who has the disease good for illnesses that are severe or can be prevented w early tx |
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What is sepcficity?
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more expensive, and how much the test can detect a true negative, TN(TN+FP)
confirmatory test after a + test is seen |
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3 ways to get Down Syndrome?
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1. trisomy 21 -95% cases, meiototis nondisjunction failure of homologous chrom to seperate (always maternal)
2. unbalanced robertsonian translocation- 2-3% DS, 46 chromosome an extra chrom 3. mosaicism: patient has 2 cell lines one normal and one with DS |
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genetic imprinting and partial deletion are example for which disease
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prader-willi and angelman
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uniparental disomy is what and give an example
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2 copies from one parent and none from the other--> complete hyatidform mole
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21 yo fasting w jaundice and an increased amount of unconjugated bilirubin is
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gilber-syndrome
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what happens with gilbert syndrome
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you decrrease UDP glucornyl transferase or decr in bilirubin uptake, increasing inconjugated amount and usually onset w stress/fasting
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What is AST:ALT in an alcholic w hepatitis
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2:1
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What is AST/ALT in a person w viral hepatitis
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ALT>AST
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What is suppression?
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mature defense mechanisms, voluntarily withholding an idea or feeling from conscious awareness ( not thinking about boards till later)
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What is repression?
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involuntary withholding an idea or feeling from conscious awareness- rape forget about it until see it on tv
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what is humor?
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appreciating the amusement nature of anxiety making it light
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Describe altruism
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guilty feelings are alleviated with generosity towards others
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What is isolation
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describing a hard time w no emotion connection, seperate feelings from a horrible event
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what is the only class of antibody that crosses the placenta?
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IgG
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some dopamine drugs block the interfindibular area what would this cause in a patient?
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galactorrhea & lacrimation, heavy breasts, sexual dysfunction
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which hormones use the JAK/STAT pathway
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GH & prolactin!
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mutation of germline RET effects?
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adrenal medulla (pheochromoctyoma) parathyroid (3/4th pharyngeal pouch), & parafollicular cells derived from neural crest cells (4t/5th pouches)
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MEN are unique because
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all derived from neural crest cells, remember MEN 2A= parathyroid, pheochromocytoma, & medullary thyroid cancer (parafollicular C Cells)
MEN 2B= pheochromocytoma & oral mucosa & medullary thyroid cancer |
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Decribe the role of histones in Huntington's Disease
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hypermethylated histones bind to DNA and prevent transcription and production of neurotrophic factors
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What ae histones?
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small proteins complex with DNA make some genome unavailable for transcription
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adrenal cortex develops from the
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mesoderm
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adrenal medulla develops from the
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ectoderm (neural crest cells)
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Whats the genetic inheritance for sickle cell anemia
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autosomal recessive
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erythrocytes get their energy with which 2 pathways
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glycolysis and shunt (HMP)
HMP- makes NADPH to prevent damage & G6PD is the rate-limiting enzyme in this reaction |
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How is hydrogen peroxide reduced in RBC?
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with glutathione peroxidase and oxidizes with glutathion and regnerated which produces one NADPH
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So which 2 mechanisms would present with problens in RBC?
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G6PD deficiency
glutathione (wouldn't make NADP& glutathione) increase amount of damage |
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RMP at -70 mantained by
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a lot of K+ conductance and some Na+ conductance
K= -80 mV Na= +60 mV |
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Pt presents with reduced vision in the R eye, and exam shows R. hemanymous hemaniopa, with direct light on R pupil dilates, but indirect it constrict whats the likely area injured
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optic tract
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what is hemanymous hemaniopa
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vertical loss of vision on same side in both eyes
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if it was a lateral geniculate nucleus lesion what would you see
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contralateral homonymous hemaniopa but pupil reflex would be intact
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why does the marcus-gun pupil form with optic tract lesion
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because this is a combination of nasal & temporal fibers going to the back and the nasal carries pretectal nucleus fibers to pupil
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what would visual cortex lesion present with
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contralateral homonymous hemaniopa w macula sparing but light reflex would be normal
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pt w lesion under arm, seizures, and history of that mom had skin cancer what embryological derivative did the lesion develop from?
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neural crest cells, melanoma is the 3rd common cancer to mestastize to the brain
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name the order of common metastasis to the brain
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lung, breast, melanoma
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where do mealnocytes come from?
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neural crest cells
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50 yo presents w this and recurrent gum bleeding what are you thinking?
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Aeur rod, AML (M3 AML) accumulate myeloblasts in Bone marrow..stain with MPO..crystals aggregate= auer rods
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Which chromosomes characterize acute promyelocytic leukemia
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t (15;17) the translocation of the retinoic acid RAR on chrom 17 to chrom 15, RAR disruption blocks maturation of& promyelocyts accumulate...numerous primary granules incr DIC tx: trans-retinois acid
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describe conversion disroder
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sudden loss of sensory/motor from stress etc. common in females but no pathophysiology is present (all labs normal) pt can be indifferent to symptom
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Describe what controls the symptoms of jetlag in the hypothalamus?
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suprachiasmatic nucleus detect photosensitivie from the retina and controls pineal gland to release melatonin and cortisol during day time from ACTH
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24 yo w headaches, visual changes and you see an intracranial calcified mass..remove it and see cystic space w brown rich cholesterol what other structure shares origin with this?
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pituitary gland, its a craniopharyngioma derived from Rathke's pouch remnants
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Benign tumor seen in children and adults MC supratentorial tumor
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chraniopharyngioma
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what embryo layer does the Rathke's pouch develop from
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ectoderm invaginates and protrustion forms anterior pit
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What does the posterior pituitary gland develop from?
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neurhyphosis from the neuroectoderm
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retrograde studies are more likely to have
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recal biasis
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Whats the problem w recall studies?
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people who had adverse effects are more likely to recall the risk factors they were exposed to than people who didnt have adverse effects
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4 yo w difficult walking and cells show radiation-induced genetic mutation whats the likely problem?
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ataxia-relangiectasia defect in ATM gene codes for DNA repair enzymes, see cerebellar defects, spider angioma, & igA def...
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an older pt comes in w visual disturbances you check and see yellow 1.5 mm diameter on the macula what kind of visual disturbances are they having?
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central scotoma
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what is central scotoma
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any visual defect surrounded by relatively unimpaired field of vision
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macular degeneration causes
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central vision loss usually age related
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3 mo old w recurrent vomiting & when seend he has pancreas in his duodenum what hapened?
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ventral portion of pancreas ringed around the duodenum
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how does pancreas development start off
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dorsal bud is behind the stomach/duodenuma and ventral bud is in front, it then rotates behind and sits there
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what does the ventral pancreatic bud develop into
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uncinate process
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someone with a gap in the long arm of the X arm will probably present with
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macroorchidism (enalrged testes), long face w a large jaw, large everted ears, autism, mitral valve prolapse & MR
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what is the mechanism of fragile X syndrome
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repeast of CGG on the FMR1 gene, causes a skip in the long -arm of X when methylated
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a study done testing colorectal cancer w + biopsy and those with - colorectal cancer by age & race is avoiding
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confounding variables
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taking out variable that could effect a study is eliminating
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confounding variables
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Does CO poisoning affect PaO2?
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No, only decrease oxygen binding on hemoglobin and unloading of O2 to tissues
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Does CO cause any methemoglobin?
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No that is when fe2+ gets reduced to Fe3+ which is the unusable form for O2, usually occurs bc of drugs
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how does congenital torticollis present?
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baby with possible mass on the neck & unable to turn their head one way, cries when turned a certain way and prefers the other
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How does congenital torticollis usually happen?
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2-4 weeks it's seem either due to malposition of the head in utero/birth canal causes SCM injury or birth trauma
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What does maternal hypertension cause
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asymmetrical growth, a normal head with reduced abdominal circumference
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an upper respiratory infection of the maternal such as rubella could cause what in an infant?
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usually not a problem but w rubella can cause mental retardation & congenital heart defects
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influenza A combined with animal virus oxthomyovirus causes what to occur
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genetic reassortment
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What is needed in a virus to have genetic reassortment occur?
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segmented genomes
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VII cranial nerve controls what w hearing?
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innervates the stapedius muscle which causes oscillation in the stapes making it more sensitive to sound ( if problem people have trouble hearing normal sounds)
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Gram + motiliy tumbling rod seen in someone who is an organ transplant pt and w fever, headache, and vomiting...CSF shows pleocytosis & normal level of glucose
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listeria meningitis
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Can women with Turner Syndrome XO become pregnant?
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5% do without medical assistance but 95% do by in vitro fertilization, and donor oocytes & estrogen/progesterone to maintain their lining
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genetically fm born to a 23yo mom shows male ambigous genitalia and the mom experiences facial hair growth and a deepening of voice, what is the baby missing ?
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aromatase
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What does aromatase do?
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converts androsterndione--> estrone & tesosterone --> estradiol
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why does the mom with the baby aromtase def get facial hair growth and a deep voice?
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extra androgens in the placenta
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what does someone with a 5 alpha deficiency present with?
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male with decr synthesis of DHT and feminized internal genitalia
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What is the lecithin/ sphingomyeling ratio used to indicate?
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fetal lung maturity
>1.9= mature |
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How do we measure lecithin / sphingomyelin?
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mothers amniocentosis bc pulmonary secretions come from fetus, and after 32/33 weeks the lecithin should be much greater
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What hormones most control the release of lecithin/sphingomyelin?
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glucocorticoids
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2 siblings with the same mitochondrial disease from their mother have varied expression, how come?
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mitochondria are randomly distributed to the kids, some get normal, damaged, or mixed...this is called heteroplasmy!
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a male with a small phallus, hypospadia, and nomral HTN/electrolytes is deficient in?
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5 alpha hydroxylase
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failure to fuse the maxillary prominence with the medial nasal results in
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cleft lip
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a mother comes in at 16-18 weeks for her triple test and you find low alpha-feto protein, she also drinks & smokes what is this associated with?
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trisomy 21
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What is a high alpha-feto protein associated with for a child?
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omphalocele, gastroschisis, neural tube defects (also see high acetycholinesterease), & multiple gestation
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what is 2 standard deviations cover?
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95%
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Ventral pancreatic buds form from what, and make what?
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come from the liver diverticulum and form the head of pancreas, main duct, & uncinate process
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What does the dorsal bud make?>
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everything else in the pancreas- body, tail, isthmuc, acessory pancreatic duct, rest of main
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What happens in pancreatic divisum
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The 2 ventral and dorsal fail to fuse so you have 2 drainage systems, santori from dorsal= minor papilla will drain most of the pancreas, the ventral wirsung open major papilla inferior/posterior head & unicinate drianage
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A drug allowing people to survive longer with CLL with do what to incidence & prevalence?
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incidence will be same, prevalence will incr (more people staying alive w the disease)
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Alzheimer's disease early onset related to what genes:
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APP (21), presenilin-1 (14), & presenilin-2 (1)
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Alzheimer's late onset due to what genes
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ApoE4(19)
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