Block 4 Flashcards Preview

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Flashcards in Block 4 Deck (18):
1

What type of organism is Bacteroides fragilis?

Anaerobic

2

From what cell line is the anterior pituitary derived?

The true ectoderm

3

What thought should blotchy red fibers on a trichrome stain inspire?

Mitochondrial disease

4

What is the gene mutation present in APL?

t15:17

5

How does mononucleosis (EBV) present in peripheral blood?

As many activated lymphocytes. It can look a lot like cancer, be careful.

6

What role does the pre-patellar bursa play?

It prevents injury due to extreme flexion of the knee.

7

What causes the cutaneous flushing associated with niacin?

prostaglandins

8

What two drugs act by binding ergosterol?

Nystatin and Amphotericin B

9

What is the term for the ability of some anticodons to bind multiple codons?

Wobble

10

How do osteocytes remain connected to one another inside the matrix of the bone?

Osteocytes remain connected to one another by gap junctions

11

Which tissue extracts the most oxygen from the blood on a percent basis?

Myocardium. The coronary sinus has the largest arterio-venous oxygen gradient.

12

What do you need to treat GC/Chlamydia?

Ceftriaxone plus wither azithro or doxy.

13

What is the replication cycle of Hep B?

dsDNA -> RNA -> dsDNA

14

Which disorder causes panacinar emphysema?

Alpha-1-antitrypsin deficiency

15

What causes HUS? How is it characterized?

O157:H7. It has oliguria and hematuria

16

Where in the colon is adenocarcinoma most frequently located?

The rectosigmoid colon.

17

How is a prolonged PT associated with halothane poisoning?

Halothane poisoning causes a prolonged PT by damaging the liver to the point of failure. Since the liver makes the clotting factors, they are lost in the process.

18

Which symptoms define a mass in the ascending colon?

Occult blood with wt. loss and progressive fatigue, but not much else.