____ carry blood away from the heart, whereas ___ carry blood toward the heart.
What will be an ideal response?
Arteries; veins
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Posterior upper limb muscles are innervated by the
A) ulnar nerve. B) median nerve. C) axillary nerve. D) musculocutaneous nerve. E) radial nerve.
A thermometer should be inserted into the rectum between _______ and _______ inch
Fill in the blank(s) with correct word
White matter is composed of
A. ganglial sheaths. B. bundles of myelinated axons. C. collections of nerve cell bodies. D. bundles containing both myelinated axons and nerve cell bodies. E. collections of unmyelinated axons.
When two action potentials arrive simultaneously at two different presynaptic terminals that synapse with the same postsynaptic neuron,
A. the direction of the action potential is reversed. B. temporal summation occurs. C. spatial summation occurs. D. hyperpolarization occurs. E. threshold is never reached.