Which of the following neurotransmitters is typically NOT classified as a biogenic amine?
A) Acetylcholine
B) Serotonin
C) Epinephrine
D) Dopamine
Answer: A
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Complete tetanus
A. is the time during which the tissue cannot respond again. B. results in complete and incomplete tetanus. C. is the condition in which the muscle fiber only partially relaxes between contractions. D. is the condition in which stimuli occur so rapidly that there are no intervening relaxations. E. is the constant tension produced by muscles for long periods of time.
Which of the following most closely represents the percentage of water by weight in an
adult male? A) 55% B) 65% C) 35% D) 45%
The optimal pH range for the stomach enzyme pepsin is
A. 7.3-7.4. B. 10-12. C. 12.0-13.5. D. 6-8. E. 2-4.
When looking at the range of motion of the various sections of the vertebral column the ________ has the most flexibility
A) lumbar spine B) thoracic spine C) cervical spine D) sacral spine