Which of the following is not a chemical class of neurotransmitters?
A) acetycholine
B) amino acid
C) biogenic amine
D) ATP and other purines
E) nucleic acid
E) nucleic acid
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A neuron conducting an impulse from the CNS to the detrusor muscle of the urinary bladder would be classified as a(n) ________ neuron.
A. autonomic motor B. somatic sensory C. visceral sensory D. somatic motor
Descent of the testes is stimulated by the ________
A) presence of the X chromosome B) presence of estrogens C) presence of testosterone D) presence of Y chromosome E) absence of the X chromosome
Compare the duration of atrial and ventricular systole at a representative heart rate of 75 bpm
A) Atrial systole has a duration of 100 msec, and ventricular systole has a duration of 270 msec. B) Atrial systole has a duration of 270 msec, and ventricular systole has a duration of 100 msec. C) Atrial systole has a duration of 100 msec, and ventricular systole has a duration of 100 msec. D) Atrial systole has a duration of 270 msec, and ventricular systole has a duration of 270 msec. E) Atrial systole has a duration of 100 msec, and ventricular systole has a duration of 370 msec.
During ________, chromatid pairs separate and the daughter chromosomes move toward opposite ends of the cell.
Fill in the blank(s) with the appropriate word(s).