Which of the following does not occur in a photoreceptor during exposure to light?
a. membrane hyperpolarization.
b. closure of Na+ channels in the outer segment.
c. increased transmitter release from the synaptic terminal.
d. absorption of light by photopigments
e. closure of Ca2+ channels in the synaptic terminal.
C
You might also like to view...
The portion of the sternum first seen on CT axial images arranged in descending order is the manubrium.
Answer the following statement true (T) or false (F)
In general, the parasympathetic nervous system is ____________________ to the digestive tract, whereas the sympathetic nervous system is ____________________
Fill in the blank(s) with correct word
The ________ nervous system facilitates increased blood flow to the penis by facilitating local release of ________.
A. parasympathetic; norepinephrine B. sympathetic; norepinephrine C. parasympathetic; nitric oxide D. sympathetic; nitric oxide E. somatic; acetylcholine
If an oral surgeon were to slip and cut the hypoglossal nerve, which of the following actions would be affected? Select all that apply.
A. Closing off the oral cavity from the pharynx B. Depressing the tongue C. Moving the tongue side to side D. Moving the tongue up and back