What neurotransmitter is released from the parasympathetic preganglionic fiber?
a. sodium
b. dopamine
c. acetylcholine
d. norepinephrine
e. epinephrine
c
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Ultrasound and maternal serum marker tests are less informative than amniocentesis or
chorionic villus sampling (CVS) in diagnosing trisomy 21 because A) ultrasound and maternal serum markers check chromosomes, and CVS and amniocentesis do not. B) ultrasound and CVS check chromosomes, and maternal serum markers and amniocentesis do not. C) ultrasound and maternal serum markers do not check chromosomes, and CVS and amniocentesis do. D) maternal serum markers and amniocentesis check chromosomes, and ultrasound and CVS do not.
Long, tactile hairs that are extremely sensitive are called:
A) vibrissae B) vibrissa C) cilia D) ciliae
Which are the midbrain nuclei that produce dopamine, and thereby affect motor control?
A. Red nuclei B. Cerebral nuclei C. Substantia nigra D. Arcuate nuclei
The ________ is the weight bearing portion of the vertebra.
Fill in the blank(s) with the appropriate word(s).