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93 Cards in this Set
- Front
- Back
what is the part of the adrenal gland that secretes aldosterone?
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the glomerulosa
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are adrenal glands intraperitoneal, or retroperitoneal>
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retroperitoneal
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where is the adrenal gland located?
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in the preirenal space
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what is the medial umbilicle ligament a fetal remanat of?
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the urachus
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what is the relationship btw the rt adrenal gland and the diaphragmantic crus?
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the crus is superior the rt adrenal gland.
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Does gerotas fascia enclose the adrenal glands?
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yes
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what is the relationship btw adrenal glands and the kidneys?
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Adrenal glands are anterior and medail to the kidneys
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what courses btw the pancreas and lt adrenal gland?
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the splenic artery and vein
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what are the landmarks to finding the adrenal gland
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liver, ivc, crus of diaphragm
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when looking at the caudate love in transverse, which direction do you angle to see the rt adrenal?
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inferior
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compare the echogenicity of the adrenal cortex compared to the kidney?
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The adrenal cortex is hypoechoic to the medulla of the kidney
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What is the relationship btw the bladder and prostate?
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the bladder is cephalic to the prostate
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is the bladder intraperitoneal?
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no
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What are the 5 sonographic layers of the bowel, and their echogenicity?
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-Fluid/mucosal interface(echogenic)
-Mucosal, lamina propria, muscularis mucosa(hypoechoic) -Submucosa(echogenic) -Muscularis propria(hypoechoic) -Serosa(echogenic) |
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What are the 4 sections of the stomach?
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fundus, pyloruc antrum, body, pylorsu
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what is the gastroesophageal junction.
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junction between the stomach and the esophagus. Sonographically appears as a bullseye and is seen posterior to the LT lobe and anterior to the AOrta
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What is the maximum wall thickness of a disteded stomach, small bowel, and appendix?
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3mm
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what should you do if your patient has a cystic structure in the lt upper quadrant and you are unsure whether or not it is the stomach?
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drink water
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what are the 3 parts of the small intestine?
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duodenum
jejunum ileum |
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what are peyers patches?
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secondary lymphoid organs found on the ileum of the small intestine
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describe the 4 parts of the duodenum, and which are intra/retreperitoneal?
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1st-intra-passes rt, up and back
2nd-retro-extends downward 3rd-retro-passes to the lt 4th-intra-body of pancreas is superior |
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what is the keyboard sign?
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valvae conventes
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what is the maximum diameter for small bowel?
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3 cm
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what is the maximum allowed diameter of the appendix?
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6 mm
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decribe the technique to find the appendix
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follow asceding colon down to the cecum in trx, and use compression technique to look for appendix medially off the cecum
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descibe the course and anatomical names of the large intestine.
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cecum
-ascending colon-extends from the cecum to the hepatic flexure -trx colon-hepatic flexure to splenic flexure -descending colon-splenic flexure to sigmoid colon -sigmoid colon-extends to rectum -rectum-sigmoid colon to anus |
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what are haustral folds?
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folds that appear as echogenic "air bumps" in the colon
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what is the maximum allowed wall thickness in a distended colon?
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5mm-distended
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what is the maximum alle=owed wall thickness of an undistended colon?
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9 mm
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where is the spleen in relation to peritoneum
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covered by it
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Where is the diaphragm in relation to the spleen?
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superior and posterior to the spleen
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where si the lt kidney in relation to the spleen?
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lt kidney s inferior and posterior to the spleen
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where is the desceding colon in relation to the spleen?
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descending colon is inferior to the spleen
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where is the stomach in relationship to the spleen
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the stomach is medial and anterior to the spleen
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where is the lesser sac in relation to spleen?
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the lesser sac is anterior to the spleen
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which 4 ligaments are responsile for keeping the spleen in ts place? Explain them
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Gastrosplenic-greater curve to medial splee
Splenorenal-spleen to posterior abdomenal wall splenocolic-spleen to trx colon phrenicolic-colon to diaphragm |
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Describe the size and shape of the spleen, and how it changes with age.
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-crescent shaped
-12x8x4 -gets smaller with age -increases in size after digestion |
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what is the function of the capsule of the spleen?
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covers the spleen and is reflected as scheeaths at the hilum
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what is the funciton of the hilum of the spleen?
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contains blood vessels, nerves, lymphatics. This is where the tail of the pancreas sits
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what is the funciton of the trabeculae of the spleen
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small fibrous bands given off y sheaths. They constitute the skeleton of the spleen
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what is the funciton of the white pulp of the spleen?
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contral in the spleen and composed mainly of lyphocytes which function in immunity
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what is the funciton of the red pulp of the spleen?
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outer region. Red blood cell and platelet destruction.
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What are 4 functions of the spleen?
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-Blood reservoir
-red blood cell and platelet destruction by macrophages -lymphocyte manufacture -heatopeietic functions-make red blood cells in the 5-6th month of fetal life |
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Describe some sonographic difficulties which may be encountered in sonographic demenstration of the spleen, and suggest some ways of overcoming tehse difficulties?
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-liver mistaken for a mass , subcapsular hematoma, or subphrenic abcess
-tail may look like a mass in the hilum of the spleen -fluid in stomach may look like intrasplenic fluid |
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what is normal echogenicity of the spleen?
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hyperechoic to theliver
hyperechoic to the lt kidney |
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what is the splenic volumetric index?
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SVI=LxWxH/27 it is used when patients are expected to reture for serial scans
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what is an accessory spleen?
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splenic tissue found separate fromt the organ(usually at the splenic hilum). Appears sonographically the same as splenic tissue.
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Where is the right adrenal gland compared to the crus of the diaphragm.
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lateral
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where is the right adrenal gland comared to the IVC?
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Lateral
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where is the right adrenal gland comared to the right kidney?
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SAM
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where is the right adrenal gland comared to the right lobe of the liver?
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posterior
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where is the left adrenal gland compared to the lesser sac?
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posterior
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where is the left adrenal gland compared to the pancreas?
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posterior and lateral
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where is the left adrenal gland compared to the kidney?
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SAM
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where is the left adrenal gland compared to the crus?
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lateral
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What are the 2 parts of an adrenal gland?
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cortex and medulla
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what are the 3 layers of the cortex of the adrenal gland, and what hormones do they secrete?
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zona glomerulosa-moneralcourticoids(aldosterone)
zona fasciculata-glucocorticoids(steroids) reticularis-sex hormones(adrogens) |
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What does the medulla of the adrenal glands secrete?
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epinephrine and nor-epinephrine
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what is the normal sonographic apprearance of the adult adrenal?
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hypoechoic with a echogenic strip in the middle
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list the vairous components of the lymphatic system
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tonsills
thymus lyph nodes lymphatic vessels liver spleen peyers patches bone marrow |
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how does the lymphatic sytem tie in with the cardiovasular sytem?
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lymphatic vessels pick up fluid that is leaked out of capillaries. This fluid is drained via the thoracic or right duct into the sublavian veins, and eventually to the heart.
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What are the functions of the lymphatic system?
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-maintian homostasis
-digest fatty acids(small intestine) -produce lymphocytes -remove debris, and organisms |
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descrive a normal lymph node and how it is cnnected the lymphatic vessels
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encapsulated, bean-shaped organ that have lyphatic vessels entering on the convex side(afferent), and efferent vessels leaving on the concave side.
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Describe the sonographic criteria for caling a lymph node normal
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parynchma is hypoechoic
hilum is echogenic less than l cm smooth contour |
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what do t-cells, an b-cells do?
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t-cells-destroy invaders, and are located in the cortex
b-cells-create antiodies and are found throughout the node - |
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Where is the bladder in relation to the prostate?
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superior
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Where is the bladder in relation to the uterus?
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anterior
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Where is the bladder in relation to the symphysis
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posterior
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is the bladder intra/retroperitoneal?
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retro
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Describe the medial umbilical ligament, it's location and purpose
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The medial umbilical ligament is the fetal remnanat of the urachus. It is the superior liganment of the ladder and helps held the bladder in position
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What is the bladder trigone? Describe its location?
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Smooth area on the posterior aspect of the bladder floor where the ureters enter posteriorly, and the urethra leaves anteriorly.
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Desceibe the nomal bladder's sonographic appearance includng wall, ureteral openings, and bladder volume.
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-anechoic with echogenic walls btw 3-6 mm.
-volume measured by LxWxAPx.523 -can sometimes have anterior aftifact called reverb artifact |
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what are the 4 4 layers to the bladder wall?
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-inner mucosa(transitional epithelium)
-connective tissue(submucosa) -detrusor muscle -adventitia |
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which adrenal gland is more triangular shaped?
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the right
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where do the adrenal glands drain?
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the right adrenal gland drains directly into the IVC, and the Lt drains into the left renal vein
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Where do the parts of the adrenal gland originate?
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the medulla orginates from the neural crest cells, and the cortex develops from the mesderm of the posterior abdominal wall.
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what are chromaffin cells?
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catacholamines such as epinephrine, and norepinephrine
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what are the 2 outer coats of adrenal glands?
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peritoneal(external)
fibroelastic(internal) |
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T/F the interstitial fluid can travel in and out of a capillary?
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False-it can only travel in, not out.
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what is the course of lymph?
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cappillaris----lymphatic vessles-----lyphatic trunk-----thoracic duct/rt lymphatic duct-----subclavian veins.
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what is the most relaible indicator of lymphadenopathy?
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modes posterior to the aorta and IVC.
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What are the most common groups of nodes?
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gastric, hepatic, pancreatic, splenic and colic
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is the ascending colon intra/retroperitoneal?
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intra
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T/F Large sacculations of the colon are called rugae?
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false
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T/F the second part of the duodenum is lateral to the head of the pancreas?
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true
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what is the innermost layer of bowel?
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mucosa
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is the antrum of the stomach medial to the pylorus?
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yes
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where is the appendix normally found?
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medial to the cecum
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what is a sight for lymphadenopathy?
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the liver porta
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where does the splenic vein run in relation to the pancreas?
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superior to the body and tail of the pancres
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what is the superior border of the spleen?
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the left hemidiaphragm.
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does the spleen decrease in size with portal hypertention?
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no
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what does the splenic vein merge w/ to form the portal vein?
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SMV
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