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51 Cards in this Set
- Front
- Back
posterior pituitary gland
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acts mostly as storage, releases oxytocin and ADH
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anterior pituitary and hormones
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controlled by hypothalamus,
TSH prolactin Adrenocorticotropic ATCH gonadotropins: LH FSM GH Melanoctye SH |
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TSH
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thyroid stimulating,
normal activity of thyroid glands, thyroid released thyroxin |
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ATCH
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adrenocorticotropic hormone, stimulates adrenal to release glucocorticoids (stress)
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gonadotropins: FSH, LH
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levels rise during puberty
FSH: stimulates gamete production LH: ovulation, testorerone |
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prolactin
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females: milk production
males: testosterone |
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GH
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growth hormone, stimulates mitosis and increase in size, targets bone cartilage and muscle
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gigantism/acromegaly
pituitary dwarfism |
hyper secretion in childhood,proportionally
hyper secretion in adult, large forehead elongated jaw/nose drawfism: hypo in child |
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MSH
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melanocyte stimulating
-makes melanin (skin pigment) active during fetal childhood and pregnancy |
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Posterior pituitary, ADH
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anti-directic
concentrations urine |
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diabetes insipidus
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hyposecretion, large urine outputs, massive thirst, dehydration
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SIADH
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hypersecretion, decrease urine, fluid retention, hypertension, weight gain
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oxytocin
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females: contractions (positive feedback)
males: ejaculation |
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thyroid gland
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biggest gland,two lobes
thyroid follicle: thyroxin colloid parafollicular: thyroxin triiodothryonine |
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thyroid hormones
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thyroxin: 4 iodines, produce by follicles
triiodothryonine: target cells convert T4 to T3, targets everything except brain and gland itself effect BMR, body temp. |
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myexdema
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hypothyroid, musuc swelling
adult weight gain low bar |
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endemic goiter
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lack of iodine in diet
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cretinism
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hyposecretion in child, short disproportionate and mental deficits
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graves disease
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hyperthyroid in adult
antibodies minic TSH, always releasing -high bar, irregular heartbeat, treated with removal or radioactive |
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calcitonin
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lowers blood calcium levels, targets skeleton
inhibits osteoclats (chew bone) stimulates osteoblasts (deposits) |
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parathyroid gland
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increases blood calcium,
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hyperparathyroid
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bone demineralization, calcium buildup
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hypoparathyroid
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trauma event caused, prolonged muscle contractions, loss of sensation
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adrenal cortex + 3 types
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does not store hormones, produced and released as needed
-mineralocorticoids -Glucocorticoids |
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mineralocorticoids
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regulates extracellular electrolytes, Na, K
aldosterone is most common |
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aldosterone
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conserves sodium, removes K
effect lasts 20 minutes |
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aldosteronism
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hyper secretion
usually due to tumour excessive thirst, high blood pressure, weight gain, fluid retention |
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Glucocorticoids
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energy metabolism, helps resist stress
normal: active in unfed state, helps maintain glucose stress: spikes, maintains glucose |
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cortisol
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bursts, highest in morning
forms glucose from fats and protein to provide glucose to brain |
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Cushing’s Disease
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hyper secretion, depresses bone formation, depresses immune system, constant stress
signs: swollen moon face, tendency to bruise |
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addisons disease
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hyposecretion of glucocorticoids and mineralocorticoids, results in weightloss , decreased sodium and glucose, increase potassium, severe dehydration
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gonadocorticoids
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stimulates onset of puberty in both sexes
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androgen
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testosterone, converted at target tissues to potent form, male sex hormone, female muslce formation
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androgential syndrome
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hypersecretion, masculinization, effects females and prepubescent males
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adrenal medulla:
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release of hormones controlled by sympathetic NS, low level of continual release
secrets stress hormones epinephrine and norepinephrine |
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catecholamines
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epinephrine: heart and metabolic activities, major product, used for allergic reactions
nor: vaso constrictor, help with blood pressure, stops sending blood to non important functions |
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catecholamine imbalances
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not required for life
hypersecretion: increased BMR HR, hypertension, sweating |
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pineal gland hormone
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melatonin: rises and falls during day, response to darkness
functions: timing of puberty, setting circadian rhythm, role in body temp appetite and sleep |
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SAD:
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seasonal affective disorder, milk depression from darkness
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pancreas: acinar cells
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exo/endocrine functions, secrets to GI, external to body
acinar cells produce juice that help digestion |
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pancreatic islets:clusters of cells within pancreas that produce hormones
alpha cells: |
clusters of cells within pancreas that produce hormones
alpha: glucagon |
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beta cells:
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secret insulin
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insulin
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lowers blood glucose, secreted as proinsulin the enzyme creates it to insult so that it doesnt act IN the pancreas
cells need glucose transporter that is activated by insulin stimulates glycogen formation |
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glucagon
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released glucose in blood
targets liver some muscle fight or flight response stimulates glycogen breakdown |
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diabetes mellitus
types 1/2 |
too high blood glucose
1: defective insulin production due to damage, childhood, glucose is not being taken in 2: adult,change in insulin receptors cuz of decrease in sensitivity |
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signs and symptoms
poluria polydipsia polyphagia |
polyuria: excess urination, kidneys excreting peeing glucose
polydipsia: dehydration from peeing polyphagia: excessive hunger since cells are starving since they cant take in glucose |
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damage to other tissues
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blindness, obesity, kidney damage,heart problems
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hypoglycemia
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low blood sugar, usually due to excess insulin
anxiety, nervous, weak decrease brain activity, treated with sugar |
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ovaries
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estrogen: mature repo strucutres,menstral cycle, secondary characterisitics
progesterone: secreted by corpus luteum, helps uterine lining for implantation, highest before period, maintains pregnancy |
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testis
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testosterone: maturation of rep organs, secondary charc
produced by intersistial cells inhibin: inhibits FSH production when test levels are high |
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other hormone producing organs
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placenta: sustains fetus (estrogen,progesterone)
intestines: controls activty of digestive tract kidneys: erythropoetin, increase RBC production heart: atrial peptide thymus |