What are the two major enterogastrones secreted by the pancreas?
a. secretin and cholecystokinin (CCK)
b. chymotrypsin and carboxypeptidase
c. trypsinogen and cholecystokinin (CCK)
d. chymotrypsin and trypsinogen
e. insulin and cholecystokinin (CCK)
a
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Anchoring filaments of the lymphoid system are attached to which structures?
a. Cords of Billroth in the spleen b. Macrophages of the red pulp of the spleen c. The capsule of lymph nodes d. The connective tissue surfaces of lymphatic capillaries e. Tips of valve leaflets in lymphatic vessels
The mammary glands of the breasts are modified ________ sweat glands.
Fill in the blank(s) with the appropriate word(s).
When voltage-gated K+ channels open on the conductive segment of a neuron,
A. potassium enters, depolarizing the cell to a positive value. B. potassium exits, depolarizing the cell to an even more negative value. C. potassium exits, repolarizing the cell to a negative value. D. potassium enters, repolarizing the cell to a negative value. E. potassium enters, repolarizing the cell to a positive value.
Absence of postural muscle tone is descriptive of or occurs during
A. slow-wave sleep. B. paradoxical sleep. C. both slow-wave sleep and paradoxical sleep. D. neither slow-wave sleep nor paradoxical sleep.