21. Distention of stomacth describes which of the following reflexes? the stomac
ID: 3519771 • Letter: 2
Question
21. Distention of stomacth describes which of the following reflexes? the stomach causes glandular secretions and peristalsis in the SI. This a. Gastroenteric reflex b. Gastroileal reflex c. Enterogastric reflex 22. Which of the following is a component of bile? a. Heme from red blood cells c. Urobilinogen 23. Which intestinal hormone has the greatest effect on lipid digestion by stimulating the secretion of bile and pancreatic enzymes? a. Secretin b. Gastric Inhibitory Peptide c. Cholecystokinin 24. What is the function of surfactant? a. To decrease surface tension and keep alveoli from collapsing b. To decrease compliance. (stretchability) c. To increase the radius of the trachea and bronchi 25. Which of the following play(s) a role in keeping the lungs inflated? Transpulmonary pressure gradient where intrapulmonary pressure is greater than a. intrapleural pressure b. Residual air volume c. Surfactant d. All of the above 26. Which of the following have an effect on the amount of oxygen that diffuses into the blood at the alveoli? a. The pO2 gradient across the respiratory membrane b. The amount hemoglobin in blood c. Pulmonary edema d. All of the above 27. Why does a pneumothorax causes the lungs to collapse? a. Lung compliance increases and alveoil collapse b. Surfactant leaks out of the lungs and the alveoli collapse c. The transpulmonary pressure gradient is abolished. Elastic recoil of the lungs pulls the pleural membranes apart and the lung(s) collapseExplanation / Answer
Answer 21. Option a
It stimulates stomach by stretching, cephalic stimulation. Increases the small intestine activity.
Answer 22. Option b
Other components are the bike pigments, lecithin, few bile salts, small amount of copper etc.
Answer 23. Option c
It is secreted by the duodenum of the small intestine and it stimulates the release of bile into the intestine along with the pancreatic juice rich in its enzymes.
Answer 24. Option a
Pulmonary surfactant is a mixture of lipids and proteins which is secreted by the epithelial cells into the alveolar space.
Answer 25. Option d
Residual volume of air refers to the air in lungs after expiration too, it is 1200 ml. Surfactant role is been given in answer 24.
Answer 26. Option d
All the factors are included as all of these have an effect in the amount of the oxygen that diffuses into the blood at the alveoli.
Answer 27. Option b
This is a common problem in infants that causes their death.
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