Muscle fibers develop tension by
a. contraction of sarcomeres
b. shortening
c. the pushing of myosin by actin
d. all of the above
e. both a and b
E
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In animals, regulating how much blood flows into the vasculature is referred to as the _____________ response
Fill in the blank with the correct word.
Name the three main parts of a typical tooth
A) bulb, shaft, and root B) labia, body, and root C) canal, cavity, and socket D) papilla, cortex, and medulla E) crown, neck, and root
The myenteric plexus is
A) primarily composed of connective tissue. B) a layer of longitudinal smooth muscle. C) the mucus secreting layer of the digestive tract. D) a network of neurons. E) a layer of circular smooth muscle.
The most important factor in decreasing the intracellular concentration of calcium ion after contraction is
A) Active transport of calcium across the sarcolemma. B) Active transport of calcium into the sarcoplasmic reticulum. C) Active transport of calcium into the synaptic cleft. D) Diffusion of calcium out of the cell. E) Diffusion of calcium into the sarcoplasmic reticulum.