Describe the series of events triggered by the entry of acidic stomach contents into the duodenum
What will be an ideal response?
Answer: The sudden change in acidity triggers the duodenal release of secretin and vasoactive peptide (VIP) into the bloodstream to induce the pancreatic secretion of bicarbonate. Cholecystokinin (CCK), released into the bloodstream by other intestinal cells in response to lumenal amino acid and fatty acid levels, acts on the pancreas to stimulate digestive enzyme secretion and on the gallbladder to trigger the release of bile via smooth muscle contractions.
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Which structure of the nephron reabsorbs the most substances?
a) glomerular capsule b) nephron loop c) ascending limb d) collecting duct e) proximal convoluted tubule
Cranial nerve ______ conducts equilibrium and auditory information to the brain.
Fill in the blank(s) with correct word
Choose the arrangement that lists the chemicals in the order in which they would be used for coagulation. (1) thrombin (2) fibrinogen (3) prothrombinase (4) activated factor XII
A. 3, 2, 4, 1 B. 4, 3, 2, 1 C. 4, 3, 1, 2 D. 3, 4, 1, 2 E. 3, 1, 4, 2
A circular muscle band that contracts at an orifice is also known as a ________.
Fill in the blank(s) with the appropriate word(s).