Where in the oral cavity are you most likely to observe veins close to the surface?
A. hard palate.
B. marginal gingiva.
C. mucobuccal fold.
D. ventral surface of the tongue.
E. the lingual tonsil.
Answer: D. ventral surface of the tongue.
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Receptors that monitor blood pressure are called ________.
Fill in the blank(s) with the appropriate word(s).
Sequence the following events involved in muscle cell contraction:
1 . Sodium channels open and sodium flows in. 2 . Impulse reaches the axon's terminal. 3 . ACh binds to receptors on the muscle cell membrane. 4 . Synaptic vesicles fuse with neuron's membrane and release ACh via exocytosis. 5 . If enough sodium moves in to the muscle cell, an impulse (action potential) develops. a. 1, 2, 3, 4, 5 b. 2, 1, 3, 4, 5 c. 2, 4, 3, 1, 5 d. 3, 4, 5, 1, 2 e. 3, 5, 2, 1, 4
Mr. Jones has a blood pH of 7.00 and a temperature of 100.5°F. His oxygen-hemoglobin dissociation curve would
A. show no change, allowing the O2 concentration to remain stable. B. shift to the left, allowing less O2 to be released to his cells. C. shift to the right, causing more O2 to be released to his cells.
Which of the following is NOT an alternate name for the hip bone?
A. Coxal bone B. Pelvic bone C. Os coxa D. Innominate bone E. All of these are alternate names for the hip bone.