Sex ________ (estrogen, testosterone) stimulate osteoblasts and promote the growth of long bones, especially in adolescence.
Fill in the blank(s) with the appropriate word(s).
steroids
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Viewed with an electron microscope, a myofibril displays alternating dark bands (the A bands) and light bands (the I bands)
a. True b. False Indicate whether the statement is true or false
An increase in afterload ____________________ the length of time available for ventricular ejection
Fill in the blank(s) with correct word
The endoneurium
A. bundles axons into fascicles. B. surrounds nerve cell bodies. C. surrounds individual axons and their Schwann cells. D. surrounds nerve tracts in the spinal cord. E. bundles fascicles into nerves.
Acetylcholine is released from the axon terminal of a motor neuron and it acts as ________
A) an action potential B) a catalyst C) an inhibitory chemical D) a neurotransmitter