41) Which major layer of the stomach contains an extra layer that adds strength and assists in the formation of chyme?

A) serosa

B) mucosa

C) adventitia

D) submucosa

E) muscularis externa

42) Parietal cells secrete intrinsic factor and

A) pepsin.

B) gastrin.

C) mucus.

D) hydrochloric acid.

E) insulin.

43) Chief cells secrete

A) pepsinogen.

B) gastrin.

C) mucus.

D) hydrochloric acid.

E) intrinsic factor.

44) The portion of the stomach superior to the cardia is the

A) rugae.

B) pylorus.

C) fundus.

D) antrum.

E) body.

45) The esophagus connects to the smallest part of the stomach, known as the

A) body.

B) antrum.

C) pylorus.

D) cardia.

E) fundus.

46) The lesser omentum is

A) a major portion of the stomach.

B) attached to the stomach at the greater curvature.

C) important in the digestion of fats.

D) a fatty sheet that hangs like an apron over the abdominal viscera.

E) a mesentery that extends from the stomach to the liver.

47) Which gastric enzyme functions to coagulate milk, thus slowing its passage through the stomach?

A) intrinsic factor

B) pepsinogen

C) rennin

D) gastric lipase

E) hydrochloric acid

48) Hydrochloric acid keeps the stomach contents at a pH of ________.

A) 6.5 – 8.0

B) 1.5 – 2.0

C) 4.5 – 6.0

D) 7.0

E) 3.5 – 5.0

49) During the gastric phase of gastric secretion, which of the following stimulates stomach contractions?

A) secretin

B) HCl

C) pepsinogen

D) gastrin

E) trypsin

50) Intrinsic factor aids the absorption of ________ across the intestinal lining.

A) vitamin C

B) vitamin B12

C) vitamin D

D) vitamin K

E) biotin