1) Which salivary gland produces a serous secretion containing large amounts of salivary amylase?
A) sublingual
B) parotid
C) lingual
D) submandibular
E) mandibular
b
Which of the following is not a function of the digestive system?
A) ingestion
B) absorption
C) compaction
D) filtration
E) mechanical processing
d
At the right colic flexure, the colon becomes the
A) sigmoid colon.
B) descending colon.
C) transverse colon.
D) rectum.
E) ascending colon.
c
Enzymes secreted by the pancreas include
A) nuclease.
B) chymotrypsin.
C) trypsin.
D) amylase.
E) All of the answers are correct.
e
The serous membrane that lines the peritoneal cavity
A) lubricates the cavity.
B) prevents irritation.
C) secretes peritoneal fluid.
D) decreases friction.
E) All of the answers are correct.
e
Where would you find a brush border?
A) 2 B) 4 C) 6 D) 9 E) 10
c
What is produced by the structure labeled "7"?
A) sodium bicarbonate
B) antibodies
C) pepsinogen
D) hydrochloric acid
E) lipase
b
Which structure helps the stomach to stretch as it fills with food?
A) 3 B) 4 C) 5 D) 6 E) 9
e
Identify the structure labeled "7."
A) greater curvature
B) cardia
C) lesser curvature
D) pylorus
E) esophagus
d
Identify the structure labeled "12."
A) pylorus
B) greater curvature
C) lesser curvature
D) cardia
E) fundus
e
The structure labeled "5"
A) contributes to the mesentery of the small intestine.
B) is called the serosa.
C) has a simple squamous epithelium.
D) is part of the visceral peritoneum.
E) All of the answers are correct.
e
Contraction of the muscle layer labeled "9" causes the digestive tract to
A) fold for increased surface area.
B) secrete enzymes.
C) shorten.
D) dilate.
E) constrict.
e
What type of epithelium covers the structures labeled "6"?
A) simple cuboidal
B) simple squamous
C) simple columnar
D) pseudostratified ciliated columnar
E) stratified squamous
c
Identify the structures labeled "6." 135)
A) villi
B) lacteals
C) circular folds
D) serosa
E) microvilli
a
Which structure controls the contraction of the muscularis externa?
A) 2 B) 8 C) 9 D) 10 E) 11
d
What is the function of the structure labeled "6"?
A) mixes stomach juice into food
B) prevents food from entering the esophagus
C) strains materials entering the stomach
D) regulates release of chyme into the duodenum
E) controls contraction of stomach muscles
d
Identify the structure labeled "10."
A) circular muscle layer
B) oblique muscle layer
C) longitudinal muscle layer
D) submucosa
E) rugae
b