Where are the upper motor neurons that control skeletal muscles found?
A. The anterior horn of the spinal cord
B. The postcentral gyrus of the cerebrum
C. The posterior horn of the spinal cord
D. The motor association cortex of the cerebrum
E. The precentral gyrus of the cerebrum
Answer: E
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Axons may form synaptic contacts with any unmyelinated portion of another neuron.
Answer the following statement true (T) or false (F)
The muscle that causes an action is the
A) antagonist. B) mediator. C) synergist. D) agonist.
At gap junctions, the intercellular space:
A. widens and is filled by electron-lucent material B. widens and is filled by electron-dense material C. narrows and is filled by electron-lucent material D. narrows and is filled by electron-dense material
What is the longest stage of labor?
A. The dilation stage B. The expulsion stage C. The placental stage D. The puerperium stage E. The postpartum stage