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1) muscle fatigue arises primarily from failure in
a) neuromuscular transmission.
b) initiation of contraction by the motor cortex.
c) excitation-contraction coupling.
d) signal relay from brain to spinal cord.
e) calcium pumps in the skeletal muscles.
2) match the answers to the questions.
a. true only for the sympathetic division
b. true only for the parasympathetic division
c. true for both divisions
inside the ganglia are interneurons, which modulate messages.
3) match the lung capacity with its description.
a. total lung capacity
b. inspiratory capacity
c. vital capacity
d. functional residual capacity
the sum of all the lung volumes
4) the thyroid gland is composed of many ________ that produce and store thyroid
hormones.
5) blood is approximately ________% plasma by volume.
6) diffusion rate is directly proportional to ________ and ________.
7) explain why a heart can keep beating after it has been removed from a living body.
8) the amount of filtrate entering the proximal tubules of the kidneys each minute is the
________.
9) discuss changes in the cardiovascular and pulmonary systems that result from
conditioning for exercise.
10) generally, po2 in arterial blood is ________ than po2 in venous blood.
11) name the two factors that influence the membrane potential.
