Lecture Quizzes E4

Question 1

The absorption of macronutrients occurs in the …

Answer 1

Small intestine

Question 2

What is the primary purpose of gastric acid?

a. To activate pepsinogen
b. To denature proteins
c. To kill pathogens

Answer 2

C- to kill pathogens

Question 3

T or F - The sympathetic nervous system innervates the smooth muscle of the gut

Answer 3

False

Question 4

What type of receptor is the H2 histamine receptor?

Answer 4

Gs

Question 5

T or F - Both chemical and mechanical digestion occurs in the mouth

Answer 5

True

Question 6

Which of the following statements are true? (select all that apply)

a. Gastrin can stimulate the release of ACH
b. Gastrin can stimulate the release of histamine
c. Acetylcholine can stimulate the release of histamine
d. Histamine can stimulate the release of gastrin
e. Histamine can stimulate the release of ACH
f. ACH can stimulate the release of gastrin

Answer 6

B & c - gastrin can stimulate the release of histamine and ACH can stimulate the release of histamine

Question 7

The secretagogues for fluid cause the phosphorylation of _____ in the pancreatic acinar cells

a. The sodium-potassium-chloride cotransporter
b. A general chloride channel
c. CFTR
d. The bicarbonate-chloride exchanger
e. The sodium potassium-pump
f. A potassium leak channel

Answer 7

B & f - a general chloride channel and a K+ leak channel

Question 8

Which secretagogues for pancreatic bicarbonate ions in the strongest?

a. Vasoactive intestinal polypeptide
b. Secretin
c. Substance P
d. Gastrin releasing peptide
e. Ach
f. Cholecystokinin

Answer 8

B - secretin

Question 9

T or F - Chronic use of non-steroidal anti-inflammatory drugs can cause gastric ulcers

Answer 9

true

Question 10

The cephalic phase of acid secretion is a

a. Negative-feedback reflex
b. Feed-forward reflex
c. Positive feedback reflex

Answer 10

b - feed forward

Question 11

Which phase of pancreatic regulation has the greatest release of enzyme? A. Cephalic

b. Intestinal
c. Gastric

Answer 11

b- intestinal

Question 12

Match the hormone with the cells that release that hormone

i. Gastrin
ii. Somatostatin
iii. Cholecystokinin
iv. Secretin
a. A cells
b. C cells
c. D cells
d. F cells
e. G cells
f. I cells
g. K cells
h. L cells
i. N cells
j. Q cells
k. S cells
l. U cells
m. W cells
n. Z cells

Answer 12

Gastrin: G cells (answer E)
Somatostatin: D cells (answer C)
Cholecystokinin: I cells (answer F)
Secretin: S cells (answer K)

Question 13

Which two ions have the highest concentration in saliva?

Answer 13

K+ and HCO3-

Question 14

T or F we consume more water through eating and drinking than is secreted by the body into the digestive system each day

Answer 14

False

Question 15

What protein transports fructose across the apical membrane of the enterocytes?
a. GLUT1 b. SGLT2 c.GLUT5 d.GLUT3 e.GLUT4 f.GLUT2 g. SGLT1

Answer 15

c - GLUT5

Question 16

16. Which portal acinar zone has the most oxygen available?

Zone I b. Zone II c. Zone III

Answer 16

a - Zone 1

Question 17

T or F: Once Absorbed, there are not physiologically regulated mechanisms to excrete iron

Answer 17

True

Question 18

T or F: Most of the generation of individual amino acids during protein digestion occurs in the lumen, not the brush border of the small intestine

Answer 18

True

Question 19

What does intrinsic factor bind to?

a. Iron
b. Vitamin B12
c. Vitamin A
d. peptides
e. Thiamine
f. Triglyerides
g. Vitamin E

Answer 19

b - vitamin B12

Question 20

Which of the following are enzymes?

a. Lipase
b. Colipase
c. Bile

Answer 20

a - lipase

Question 21

Which testicular cells contain follicle stimulation hormone receptors?
A. Sertoli cells
B. Spermatocytes and spermatozoa
C. Leydig cells

Answer 21

A- Sertoli cells

Question 22

Wolffian ducts develop into the ….

Answer 22

epididymes, ejaculatory duct, seminal vessicles, ducti diferentia

Question 23

Hepatocytes predominantly work to make compounds
		A. Less reactive
		B. More polar
		C. Less polar
		D. More reactive

Answer 23

B- more polar

Question 24

Which of the following chemicals normally stimulate penile erection?
		A. Prostacyclin
		B. Norepinephrine
		C. Acetlycholine
		D. Serotonin
		E. Nitric Oxide
		F. Epinephrine

Answer 24

CE - NO and ACh

Question 25

In the absence of the SRY gene, a person would be phenotypically
A. Male
B. female

Answer 25

B - female

Question 26

T or F Actions of the dominant follicle cause the atresia of the other secondary follicles

Answer 26

True

Question 27

Based on what hormone they respond to and what hormone they produce, theca cells are most similar to (lyedig/sertoli) cells

Answer 27

Leydig cells

Question 28

The granulosa cells in early secondary follicles have

a. luteinizing hormone receptors
b. inhibit receptors
c. follicle stimulating hormone receptors

Answer 28

c - FSH receptors

Question 29

Progesterone levels are highest on days _____ of the average menstrual cycle

a) 1-5
b) 6-10
c) 11-14
d) 14-19
e) 20-25
f) 26-28

Answer 29

e) 20-25

Question 30

T or F The menstrual cycle is consistently 28 days

Answer 30

False