Feedback True or False Quiz

Please answer all questions. The numbers at the end of each question refer to the textbook page where the question topic is discussed.

1		Ingested food must be digested before it can be absorbed. (635)
			A)	True
			B)	False
2		Absorbed molecules of food enter either the circulatory or the lymphatic system. (635)
			A)	True
			B)	False
3		The GI tract is approximately 9 m (30 ft) long, beginning at the esophagus and ending at the anal canal. (635)
			A)	True
			B)	False
4		The term gut is a synonym for viscera. (635)
			A)	True
			B)	False
5		The lamina propria is a tunic, or layer, of the GI tract located between the submucosa and the muscularis. (637)
			A)	True
			B)	False
6		Stimulation of the parasympathetic fibers to the GI tract decreases peristalsis and intestinal secretions. (640)
			A)	True
			B)	False
7		The tongue is a mass of smooth muscles covered by a mucous epithelial membrane. (642)
			A)	True
			B)	False
8		Vallate papillae are the most numerous of the three types of papillae. (642)
			A)	True
			B)	False
9		As one swallows, the palatal rugae and the uvula are drawn upward, closing the nasopharynx. (648)
			A)	True
			B)	False
10		The formula for permanent dentition in humans is I2/2, Cl/1, P2/2, M3/3 = 16 X 2 = 32 teeth. (642)
			A)	True
			B)	False
11		The submandibular glands contain only serous secretory cells. (645)
			A)	True
			B)	False
12		The esophagus is a collapsible muscular tube that connects the pharynx to the stomach. (648)
			A)	True
			B)	False
13		The sensation of "heartburn" results when gastric juice is regurgitated into the esophagus. (648)
			A)	True
			B)	False
14		Mastication and deglutition are totally voluntary processes, whereas peristalsis is an involuntary process. (648)
			A)	True
			B)	False
15		Elevation of the uvula prevents food or fluid from entering the glottis. (648)
			A)	True
			B)	False
16		There are three layers of the muscularis in the stomach wall and only two layers of the muscularis in the intestinal wall. (650)
			A)	True
			B)	False
17		The total arterial blood supply to the small intestine comes through the superior mesenteric artery. (652)
			A)	True
			B)	False
18		The duodenum receives bile through an opening from the common bile duct and pancreatic juice through an opening from the pancreatic duct. (653)
			A)	True
			B)	False
19		The jejunum is the longest portion of the small intestine. (653)
			A)	True
			B)	False
20		Absorbed fat from the lumen of the small intestine enters the central lacteals to be transported through the thoracic duct of the lymphatic system. (655)
			A)	True
			B)	False
21		The villi compose the brush border within the small intestine. (654)
			A)	True
			B)	False
22		Peristalsis is the only action that moves chyme through the small intestine. (655)
			A)	True
			B)	False
23		The appendix is a fingerlike projection extending from the cecum. (656)
			A)	True
			B)	False
24		The internal anal sphincter, composed of skeletal muscle fibers, guards the opening of the anal canal. (657)
			A)	True
			B)	False
25		The taeniae coli are circular bands of smooth muscle that separate the haustra of the large intestine. (657)
			A)	True
			B)	False
26		The regularly occurring mass movement of the large intestine corresponds with the entrance of chyme through the ileocecal valve. (659)
			A)	True
			B)	False
27		A defecation sensation that may occur after eating a meal is an expression of the gastrocolic reflex. (659)
			A)	True
			B)	False
28		Relaxation of the internal anal sphincter in the defecation reflex permits movement of feces into the anal canal. (659)
			A)	True
			B)	False
29		Bile produced by the hepatocytes flows sequentially through the bile canaliculi, hepatic ducts, and finally the bile ducts. (662)
			A)	TRUE
			B)	FALSE
30		The principal function of the gallbladder is to detoxify bile before it is released into the duodenum. (662)
			A)	True
			B)	False
31		Bile can pass only one way through the cystic duct. (662)
			A)	True
			B)	False
32		The liver and pancreas are considered mixed glands because they have both endocrine and exocrine functions. (663)
			A)	True
			B)	False
33		All but a portion of the head of the pancreas is positioned retroperitoneally. (668)
			A)	True
			B)	False
34		The entire GI tract, from the mouth to the anus, is derived from endoderm. (665)
			A)	True
			B)	False
35		By the sixth week of development the liver is producing red blood cells; at the ninth week the liver represents 10% of the total weight of the fetus. (666)
			A)	True
			B)	False