Please answer all questions.

1			The layer of the wall of the digestive tract that contains blood vessels, small glands, and a nerve plexus is the
			A)	mucosa layer.
			B)	submucosa layer.
			C)	muscularis layer.
			D)	serosa (adventitia) layer.
2			The frenulum is part of the
			A)	esophagus.
			B)	muscles of mastication.
			C)	lips.
			D)	teeth.
			E)	tongue.
3			The largest pair of salivary glands is the
			A)	laryngeal glands.
			B)	parotid glands.
			C)	pharyngeal glands.
			D)	sublingual glands.
			E)	submandibular glands.
4			Adults normally have ______ permanent teeth; children have ______ deciduous, or primary teeth.
			A)	36,36
			B)	32,32
			C)	32,20
			D)	20,32
			E)	20,20
5			The center of the tooth, which is filled with blood vessels, nerves, and connective tissue, is called
			A)	gingiva.
			B)	pulp.
			C)	cementum.
			D)	dentin.
			E)	enamel.
6			The muscular layer of the stomach is different than the rest of the digestive tract because
			A)	it has one layer of smooth muscle.
			B)	it has two layers of smooth muscle.
			C)	it has three layers of smooth muscle.
			D)	it has four layers of smooth muscle.
			E)	it has no smooth muscle, only elastic tissue.
7			Parietal cells in the lining of the stomach produce
			A)	regulatory hormones.
			B)	pepsinogen.
			C)	HCl and intrinsic factor.
			D)	mucus.
			E)	bicarbonate ions.
8			Which of these cells in the lining of the duodenum produce digestive enzymes?
			A)	absorptive cells
			B)	goblet cells
			C)	granular cells
			D)	endocrine cells
			E)	lacteal cells
9			Given these sphincters: 1. external anal sphincter 2. ileocecal sphincter 3. lower esophageal sphincter 4. pyloric sphincter, Arrange them in the order in which food passes through them.
			A)	1,3,2,4
			B)	2,3,4,1
			C)	2,1,3,4
			D)	3,4,2,1
			E)	4,2,1,3
10			The mesentery that connects the greater curvature of the stomach to the transverse colon and posterior body wall is the
			A)	greater omentum
			B)	lesser omentum.
			C)	omental bursa.
			D)	mesentery proper.
			E)	parietal peritoneum.
11			Saliva
			A)	secretion is increased primarily by sympathetic stimulation.
			B)	contains amylase, which digests cellulose.
			C)	contains lysozyme, which has a weak antibacterial action.
			D)	contains pepsin, which digests protein.
			E)	all of these
12			In which phase of stomach secretion does the greatest amount of secretion take place?
			A)	cephalic phase
			B)	gastric phase
			C)	intestinal phase
			D)	colic phase
13			Gastrin secretion is stimulated by
			A)	duodenal pH greater than 3.
			B)	secretin.
			C)	cholecystokinin.
			D)	gastric inhibitory polypeptide.
			E)	all of these
14			The ______ secretes peptidases and disaccharidases, whereas the _______ secretes trypsin, chymotrypsin, amylase, lipase, and nuclease.
			A)	stomach, liver
			B)	stomach, small intestine
			C)	liver, small intestine
			D)	liver, pancreas
			E)	small intestine, pancreas
15			Given these events: 1. protein-coated triacylglycerols enter lacteals 2. triacylglycerol coated with protein 3. fatty acids and glycerol packaged into micelles 4. bile salts emulsify fats 5. lipase digests fat, Arrange these events in the order in which they occur during fat digestion, absorption, and transport.
			A)	1,2,4,5,3
			B)	2,5,4,3,1
			C)	3,5,4,1,2
			D)	4,5,3,2,1
			E)	5,3,4,1,2
16			The serosa is the same as the
			A)	visceral pleura
			B)	parietal pleura
			C)	visceral peritoneum
			D)	parietal peritoneum
			E)	visceral pericardium
17			Initial chemical digestion of proteins occurs in the ______ by the digestive secretion _______.
			A)	mouth; amylase
			B)	mouth; lipase
			C)	stomach; hydrochloric acid
			D)	stomach; pepsin
			E)	small intestine; trypsin
18			In __________ there are alternating waves of contraction and relaxation in the inner circular and outer longitudinal muscles of the muscular layer of the digestive tract to propel substances through the hollow tract.
			A)	mastication
			B)	peristalsis
			C)	deglutition
			D)	emulsification
			E)	defecation