A(n) ________ contraction describes the opening of stretch-activated channels in smooth muscle cells in response to a distortion of the cell membrane that is commonly observed in ________.
Fill in the blank(s) with the appropriate word(s).
myogenic, blood vessels
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The somatic nervous system and the autonomic nervous system are part of both the peripheral nervous system and the central nervous system
Indicate whether this statement is true or false.
When an action potential reaches the presynaptic terminal,
A. calcium ions diffuse into the presynaptic terminal through voltage-gated ion channels. B. acetylcholine moves into the presynaptic terminal. C. a local potential is generated in the presynaptic terminal. D. ligand-gated ion channels in the presynaptic terminal are opened. E. nothing else happens.
One of the best ways to determine the adequacy of peripheral circulation is to check the pedal pulses. To check the pedal pulse you would check the pulse in the
A. ankle. B. wrist. C. groin. D. neck. E. foot.
Platelets ______, because of their being exposed to ______.
A) Stick to the damaged area of a blood vessel and help seal the break, plasma B) Stick to the damaged area of a blood vessel and help seal the break, smooth muscle C) Stick to the damaged area of a blood vessel and help seal the break, collagen in the basement membrane D) None of the above