In a laboratory experiment, the resting membrane potential of a muscle is measured and is found to be more negative. Which of the following has occurred?
A. hyperpolarization
B. repolarization
C. depolarization
D. isopolarization
E. hypopolarization
A
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The force generated by a single muscle fiber can be increased by
A) increasing the asynchrony of recruitment only. B) increasing muscle length beyond optimal only. C) increasing frequency of action potentials and increasing muscle length beyond optimal only. D) increasing frequency of action potentials only.
Which of the following membranes are only found within closed cavities?
a. Cutaneous. b. Serous. c. Mucous. d. Connective.
The working distance is the ________
A) space between the slide and specimen and the objective lens B) space between the ocular and objective lens C) space between the condenser and ocular lens D) space between your eye and the ocular lens
List the components of a reflex arc
A) sensory neuron, interneuron, motor neuron B) sensory neuron and motor neuron C) receptor, sensory neuron, motor neuron, effector, and sometimes interneurons may be involved D) receptor, motor neuron, effector, and sometimes interneurons may be involved E) receptor, interneuron, effector