The smooth, rounded articular process of a bone is termed a
A) crest.
B) ridge.
C) head.
D) condyle.
E) trochlea.
D
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The production of sperm and oocytes is achieved through a cell division process called ________.
Fill in the blank(s) with the appropriate word(s).
What is NOT one of the functional distinctions between arteries and veins?
A) Veins always carry deoxygenated blood. B) Veins usually have a thinner vessel wall. C) Veins are easily stretched. D) Veins often contain one-way valves.
Why isn't an action potential transmitted from a postsynaptic membrane to a presynaptic terminal?
A. Presynaptic terminals have no acetylcholine receptors. B. Presynaptic neurons do not have a resting membrane potential. C. Acetylcholine can only diffuse in one direction across the synaptic cleft. D. Synaptic vesicles in the postsynaptic membrane are inactive. E. Acetylcholine is destroyed too fast.
When air is drawn in through the nose,
A) it is swirled to provide the turbulence that brings airborne compounds to the olfactory organs. B) sniffing repeatedly increases the intensity of the olfactory stimulation and permits sampling of virtually all of the air taken in at each inspiration. C) in a normal, relaxed inspiration approximately 80 percent of the air passes the olfactory organs. D) lipid-soluble materials are absorbed into the mucus prior to being able to be smelled, while water-soluble molecules are sampled directly. E) None of the answers are correct.