Erection of the penis results from ________
A) dilation of the veins in the penis
B) a sympathetic reflex
C) parasympathetic activation of the bulbourethral glands
D) a parasympathetic reflex
D
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The arrector pili muscle is composed of striated muscle tissue.
Answer the following statement true (T) or false (F)
Motor neurons release __________ into the neuromuscular synapse, which may generate depolarization at the motor end plate
A) Acetylcholine B) Adenosine C) Catecholamines D) GABA Fill in the blank with the correct answer.
A procedure used to obtain enough fetal tissue sampled through the cervix to test for
genetic disorders without culturing cells is A) chorionic villus sampling. B) amniocentesis. C) ultrasonography. D) fetal cell sorting.
Heart rate is increased by the _____ nervous system.
A) sympathetic B) peripheral C) parasympathetic D) central