As a child grows, the lungs increase in size as well. Hypothesize what the pressure of the gases within the lungs would be if the lung volume of an individual goes from 3000ml to 4000ml.
A. gas pressure would decrease
B. gas pressure would be unchanged
C. gas pressure would increase
Answer: A
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Which of the following does NOT have an effect on the amount of muscle tension that results from a muscle contraction?
a. the size of the motor units in the muscle b. how frequently the motor units are stimulated c. the type of bone to which the muscle is attached d. the number of motor units active at one time
Ca+ ion channels are found:
A. only at the axon terminal membrane. B. only along the terminal ends of the dendrites. C. throughout the length of the axon. D. throughout the entire neuron. E. only at the axon hillcock.
Which sterilization technique involves cutting the vas deferens on each side to prevent sperm from leaving the body?
A) hysterectomy B) tubal ligation C) vasectomy D) testicular deactivation
Substances that cannot be broken down into other substances are called _________.
A. neutrons B. elements C. protons D. compounds