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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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).
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.
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