The gamma motor neuron maintains appropriate tension within the muscle spindle, allowing it to remain sensitive to changes in length and velocity.
a. true
b. false
Answer: a. true
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During the inflammatory response, dilation of blood vessels is caused by
A. nitric oxide. B. histamine. C. cytokines. D. phagocytes. E. both histamine and nitric oxide.
If tyrosine and isoleucine undergo condensation, the new bond that is formed is between the:a
oxygen of the R group and the hydrogen of the amino group. b. carbon of the R group and the nitrogen of the amino group. c. carbon of the carboxyl group and the hydrogen of the R group. d. carbon of the carboxyl group and the hydrogen of the amino group. e. carbon of the carboxyl group and the nitrogen of the amino group.
The jaw structure of hominid fossils reveals two trends in hominid evolution. Which of the following best describes these trends?
A) As hominids evolved, their jaws became larger and the angle at which the jaw protrudes from the face increased. B) As hominids evolved, their jaws became larger and the angle at which the jaw protrudes from the face decreased. C) As hominids evolved, their jaws became smaller and the angle at which the jaw protrudes from the face decreased. D) As hominids evolved, their jaws because smaller and the angle at which the jaw protrudes from the face increased
The recommended optimum concentration of ethanol to use as a biocide is
A. 100%. B. 70%. C. 50%. D. 10%.