What type of photoreceptors are almost entirely responsible for night vision?
What will be an ideal response?What will be an ideal response?
Rods
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Arrival of an action potential at the synaptic knob results in
A. opening of voltage-gated calcium channels and diffusion of calcium into the synaptic knob. B. opening of voltage-gated calcium channels and diffusion of calcium out of the synaptic knob to the interstitial fluid. C. closure of voltage-gated calcium channels in the synaptic knob membrane. D. opening of chemically gated calcium channels and diffusion of calcium into the synaptic knob. E. opening of chemically gated calcium channels and diffusion of calcium out of the synaptic knob to the interstitial fluid.
Which of the following is not a function of white blood cells?
a. activation of factor XII, which triggers the clotting cascade. b. production of antibodies. c. destruction of cancer cells. d. phagocytosis of foreign invaders. e. phagocytosis of cellular debris.
White matter consists primarily of myelinated nerve fibers
Indicate whether the statement is true or false
EEG studies are valuable because ________
A) they can reveal many kinds of brain abnormalities B) they are noninvasive C) they are relatively easy to record and analyze D) they are noninvasive, they can reveal many kinds of brain abnormalities, and they are relatively easy to record and analyze