Which of the following is true about photoreceptors?
A) In dim light, images are focused directly on the rods in the fovea centralis.
B) Three types of color-sensitive photoreceptors exist: red, green, and yellow.
C) Rods absorb light throughout the visual spectrum but confer only gray tone vision.
D) If all cones are stimulated equally, all colors are absorbed by the cones and the color perceived is black.
C
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Neurons that carry information between neurons are called ________
A) Efferent neurons B) Motor neurons C) Interneurons D) Afferent neurons
The two cholinergic receptor types are ________ and ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following will occur when an excitatory postsynaptic potential (EPSP) is being generated on the dendritic membrane?
A) Sodium gates will open first, then close as potassium gates open. B) A single type of channel will open, permitting simultaneous flow of sodium and potassium. C) Specific sodium gates will open. D) Specific potassium gates will open.
The process of swallowing is also known as ________
A) mastication B) segmentation C) deglutition D) defecation E) absorption