Chapter 25 Flashcards
(53 cards)
Which of the following enzymes does not digest any nutrients? A. Chymotrypsin B. Lingual lipase C. Carboxypeptidase D. Enterokinase E. Dextrinase
D. Enterokinase
Which of the following enzymes acts in the stomach? A. Chymotrypsin B. Lingual lipase C. Carboxypeptidase D. Enterokinase E. Dextrinase
B. Lingual lipase
Which of the following is not an enzyme? A. Chymotrypsin B. Enterokinase C. Secretin D. Pipsin E. Nucleosidase
C. Secretin
Secretin is a what?
A hormone
The lacteals absorb A. Chylomicrons B. Micelles C. Emulsification droplets D. Amino acids E. Monosaccharides
A. Chylomicrons
All of the following contribute to the absorptive surface area of the small intestine except A. It's length B. The brush border C. Haustra D. Circular folds E. Villi
C. Haustra
Which of the following is a periodontal tissue? A. The gingiva B. The enamel C. The cementum D. The pulp E. The dentin
A. The gingiva
Anatomically, the \_\_\_\_\_\_\_\_\_ of the stomach most closely resemble the \_\_\_\_\_\_\_\_\_\_ of the small intestine. A. Gastric pits, intestinal crypts B. Pyloric glands, intestinal crypts C. Rugae, Peyer patches D. Parietal cells, goblet cells E. Gastric glands, duodenal glands
A. Gastric pits, intestinal crypts
Which of the following cells secrete digestive enzymes? A. Chief cells B. Mucous neck cells C. Parietal cells D. Goblet cells E. Enteroendocrine cells
A. Chief cells
What phase of gastric regulation includes inhibition by the enterogastric reflex? A. The intestinal phase B. The gastric phase C. The buccal phase D. The cephalic phase E. The pharyngoesophageal phase
A. The intestinal phase
Cusps are a feature of the _________ surfaces of the molars an premolars.
Occlusal
The acidity of the stomach halts the action of ________ but promotes the action of ________, both of which are salivary enzymes.
Amylase, lipase
The _______ salivary gland is named for its proximity to the ear.
Parotid
The submucosal and myenteric plexuses collectively constitute the _______ nervous system.
Enteric
Nervous stimulation of gastrointestinal activity is mediated mainly through the parasympathetic fibers of the _______ nerves.
Vagus
Food in the stomach causes G cells to secrete _________, which in turn stimulates the secretion of HCl and pepsinogen.
Gastrin
Hepatic macrophages occur in the blood-filled spaces of the liver called _______.
Sinusoids
The brush border enzyme that finishes the job of starch digestion, producing glucose, is called ______. It’s substrate is ______.
Maltese, maltose
Fats are taken into the lymphatic capillaries as droplets called ______.
Chylomicrons
Within the absorptive cells of the small intestine, ferritin binds the nutrient _____.
Iron
Selective intake of food is known as _______.
Ingestion
List the purposes for small intestine muscle contractions.
- propel contents along intestines
- mixing of chyme with secretions
- increase contact of chyme with intestinal lining.
What is a goblet cell?
a mucus-secreting epithelial cell.
The ____________ does not secrete digestive enzymes, but does absorb water and electrolytes.
Large intestine
