The "dark current" of photoreceptors refers to
A. the exit of Na+ and Ca2+ out of the cell when light is not hitting the cell.
B. the entry of Na+ and Ca2+ into the cell when light is not hitting the cell.
C. the entry of K+ into the cell when light is not hitting the cell.
D. the exit of K+ out of the cell when light is not hitting the cell.
B
You might also like to view...
____________________________________ epithelium lines the ureter, allowing for changes in diameter of the opening
Fill in the blank(s) with correct word
The acetabulum articulates with the __________.
A. humerus B. femur C. patella D. tibia E. hip bone
You've been working outside in the hot sun and are dripping wet with sweat. Your fluid intake has been minimal as you have been too busy to stop and get a drink. You would expect
A. your blood osmolality to be low. B. an increase in the production of urine. C. aldosterone levels to decrease. D. ADH levels to increase. E. ADH levels to decrease.
In pigs, the pectoralis group of muscles consists of ________ muscles, while in humans it consists of ________
A) one; three B) two; three C) three; one D) three; two