Of the cells lining the gastric pits of the stomach, which one does NOT secrete a substance into the lumen?
A) Mucous neck cells
B) Parietal cells
C) Chief cells
D) Enteroendocrine cells
Answer: D
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Dyneins generate movement in cilia and flagella by
A) The dynein moving along its own microtubule, pulling the cell membrane with it. B) The dynein on one side of the flagella moving along its neighbor's tubule. C) All dyneins moving along their neighbors' tubules in a synchronized fashion. D) The dynein pushing on the neighboring tubules, generating movement.
Cardiac output is the amount of blood that is pumped
A. by a single ventricle in one hour. B. by a single ventricle in one minute. C. by both ventricles in one hour. D. by both ventricles in one minute. E. by the left ventricle into the aorta in one beat.
What is cerebral cortex?
A) the outermost surface of white matter covering the cerebrum B) the outermost grey matter covering the cerebrum C) deep white matter of the cerebrum D) the inner grey matter of the cerebrum
What is removed during male circumcision?
A) glans penis B) shaft of the penis C) scrotum D) prepuce E) ductus deferens