Flashcards in 3/31 - UW 37 Deck (50)
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1
What is the embryonic source of the anterior pituitary?
Surface ectoderm
2
What organs are derived from the surface ectoderm?
Rathke's pouch (anterior pituitary), lens/cornea, inner ear, nose/mouth, epidermis, sweat/mammary glands
3
What organs are derived from the neural tube?
CNS, posterior pituitary, retina
4
What organs are derived from the neural crest?
Pia/arachnoid mater, ganglions, Schwann cells, aorticopulmonary septum and endocardial cushions, branchial arches, melanocytes, adrenal medulla
5
What organs are derived from the mesoderm?
MSK, CV sys (incl blood and lymphatics), serosal lining, spleen, internal genitalia, kidney/ureters, adrenal cortex
6
What organs are derived from the endoderm
GI tract (incl liver, pancreas), lungs, thymus, para/thyroids, middle ear, bladder/urethra
7
Caspofungin MOA?
Block glucan synthesis, for CELL WALL!!!!
8
Polyenes? MOA?
Amphotericin B, nystatin
BIND (as opposed to azoles) ergosterol, for the cell MEMBRANE
9
Azoles MOA?
Inhibit ergosterol SYNTHESIS, for the cell membrane
10
What is Caspofungin most effective against?
Candida and Aspergillus
11
What tx for isolated HTN in a nondiabetic can cause peripheral edema and flushing?
Amlodipine (CCBs)
12
What drug can cause blue-gray skin discoloration and corneal micro-deposits?
Amiodarone
13
How do NK cells mediate destruction of cells with decreased or absent MHC I expression?
1. Perforins open membrane holes
2. Granzymes enter through holes to induce apoptosis
14
What CD # do NK cells express?
CD16 or 56
15
When do Cheyne-Stokes respirations occur?
Advanced CHF, stokes, brain tumors, traumatic brain injury
16
What are common side effects of arteriolar vasodilators (hydralazine, minoxidil)?
Reflex tachycardia and edema, due to lower arterial pressure causing baroreceptor stimulation
17
Hypersensitivity to everyday noises results from injury to what?
Paralysis of the stapedius muscle (from injury or facial nerve lesion) will cause hyperacusis.
18
Where does Galactose enter the glycolytic pathway?
G6P
19
Where does Mannose enter the glycolytic pathway?
F6P
20
Where does Fructose enter the glycolytic pathway?
Glyceraldehyde 3P (after PFK-1)
21
An ulcer not in the duodenal bulb (proximal duodenum) suggests what syndrome?
Zollinger Ellison syndrome (caused by gastrin-secreting tumors)
22
Where do gastrinomas arise?
Pancreas mostly
23
Where are PUD ulcers typically found?
Lesser curvature of the stomach or the proximal duodenum (duodenal bulb)
24
What type of gastritis spares the antrum?
Autoimmune (not H pylori)
25
What are the most common clinical manifestations of Vit E def?
Neuromuscular disease (myopathy, ataxia, pigmented retinopathy), hemolytic anemia
26
What drug has a similar structure to pyridoxine (B6)?
INH
27
Resistance and flow is proportional to radius of a vessel to what power?
4th
28
In acute viral hepatitis, what is seen histologically?
Diffuse ballooning degeneration (hepatocyte swelling), mononuclear cell infiltrates, Councilman bodies (eosinophilic apoptotic hepatocytes0
29
What lab findings are usually seen in Klinefelter's?
Elevated gonadotropins (esp FSH) and estradiol, reduced testosterone
30
