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WorksheetsANP140: Digestive System
Total questions: 30
Worksheet time: 12mins
Receptive Relaxation
The process by which the stomach contracts to mix food with digestive enzymes.
The rapid emptying of stomach contents into the small intestine.
Reflex of the stomach that prepares it to receive food
The increase in acid secretion in response to food entering the stomach.
An increase in the number of action potentials increases the rate of contraction in the stomach
False
True
Produce HCl and Intrinsic Factor
Mucous Cells
Parietal Cells
Chief Cells
Enteroendocrine Cells (G cells)
What role does the liver play in digestion?
It produces enzymes that break down proteins
It absorbs nutrients from digested food
It produces bile to help break down fats
It cleans blood leaving the GI tract
Store extra undigested food
Parietal cells are stimulated by which of the following to secrete HCl?
PSNS
CCK
Histamine
Gastrin
Secretin
What is the function of enteroendocrine cells (G cells)?
Secrete mucus to protect cells in the stomach from acid
Secrete HCl and intrinsic factor
Secrete gastric lipase and pepsinogen
Release hormones (gastrin) and paracrine messengers (histamine)
Set by pacemaker activity in longitudinal smooth muscle
Peristaltic waves
Segmentation
Receptive relaxation
Propulsion
Secrete mucus to protect cells in the stomach from acid
Enteroendocrine Cells (G cells)
Chief Cells
Mucous Cells
Parietal Cells
Kills Bacteria, Denatures proteins, and activates pepsin and gastric lipase
HCl
Pepsin
Intrinsic Factor
Mucus
Secrete Gastric Lipase and Pepsinogen
Mucous Cells
Parietal Cells
Chief Cells
Enteroendocrine Cells (G cells)
Which of the following binds vitamin B12
Pepsin
Peptides
HCl
Intrinsic Factor
What is a zymogen?
A fully active enzyme that immediately catalyzes reactions upon synthesis
A digestive hormone that regulates enzyme secretion
An inactive precursor of an enzyme that requires activation to become functional
A type of protein that serves as a structural component in cells
Which of the following digests proteins?
Pepsin
Peptides
HCl
Intrinsic Factor
Sensory input is sight, smell, and thought of food
Gastric Phase
Cephalic Phase
Intestinal Phase
Receptive relaxation
Which of the following is the correct order of the cephalic phase?
Seeing a burger, increased SNS to stomach, increased gastric motility and exocrine secretions
Stretch in the stomach, increased PSNS and enteric NS, secretion of ACh/gastrin/histamine, increased exocrine secretions and gastric motility
The smell of a brownie, increased PSNS to the stomach, increased gastric motility and exocrine secretions
What is the function of bile in the digestive system?
It breaks down proteins
It neutralizes stomach acid
It emulsifies fats
It absorbs vitamins
What is the role of the stomach in digestion?
It absorbs nutrients and water
It produces bile
It churns food and mixes it with digestive juices
It is the primary site for the absorption of vitamins
Which stimulus initiates the gastric phase? (There may be more than one answer)
Smell of Food
Increased Amino Acids
Increased presence of Fats
Stretch
Decreased pH
______ percent of proteins are digested in the stomach.
10%
10-15%
15%
20%
______ percent of fats are digested in the stomach.
10%
10-15%
15%
20%
What stimulates the release of bile from the gallbladder?
Secretin
Histamine
CCK
Gastrin
In the enterogastric reflex, the SNS _______ while the PSNS _______ emptying from the stomach.
increases; decreases
decreases; decreases
decreases; increases
increases; increases
Which of the following are needed to activate pepsin?
Pepsinogen
Peptides
HCl
Intrinsic Factor
Where is the IF-B12 complex absorbed?
Stomach
Ileum
Duodenum
Liver
Increased PSNS by the vagus nerve to stomach (in the cephalic phase) causing what to occur?
Increased Secretion of HCl
Decreased gastric motility
Increased peristalsis
Increased secretion of enzymes
What is the correct order of the layers of the GI tract from deep to superficial?
Serosa, Muscularis Externa, Submucosa, Mucosa, Lumen
Muscularis Externa, Submucosa, Serosa, Mucosa, Lumen
Lumen, mucosa, submucosa, muscularis externa, serosa
Lumen, mucosa, submucosa, serosa, muscularis externa
The submucosal nerve plexus controls which of the following?
Narrowing motions of GI tract
Motility
Shortening and elongation of the GI tract
Secretions
What is the membrane that surrounds all organs in the abdomen?
Greater Omentum
Peritoneum
Lesser Omentum
Fascia
Carbohydrates are broken down into:
Glucose
Galactose
Maltase
Monosaccharides
Fructose
Which of the following is not a function of the digestive system?
Motility
Absorption
Heat production
Digestion
