With eccentric muscle contractions,
a. the development of tension occurs at constant muscle length.
b. the muscle lengthens while contracting.
c. the muscle shortens while contracting.
d. muscle length and tension vary throughout a range of motion.
e. none of these answers.
B
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A) E B) B C) C D) D 1) Innervates the superior oblique muscle. 2) Longest cranial nerve. 3) Damage to this nerve would cause dizziness, nausea, and loss of balance. 4) Involved in movement of the digestive tract. 5) Damage to this nerve would cause difficulty in speech and swallowing, but no effect on visceral organs. 6) Damage to this nerve would keep the eye from rotating inferolaterally.
Choose the statement that accurately describes why catalysts are biologically necessary.
A. Catalysts increase the activation energy of large populations of molecules. B. Catalysts make reactions go faster without cellular damage that would occur from heat. C. Catalysts provide the heat necessary for molecules to reach activation energy. D. All cell processes would occur without catalysts, but catalysts optimize the reaction rates.
When repolarization of the plasma membrane is complete, the
A. cell no longer has a potential difference across its membrane. B. cell is no longer responsive. C. cell dies. D. original polarity of the cell is restored. E. cell regenerates.
The electrical signals that are propagated along axons, regulating and coordinating body activities, are known as___________.
Fill in the blank(s) with the appropriate word(s).