Which of the following statements about the refractory period of a membrane is TRUE?
A. The absolute refractory period refers to the period of time during which another action potential cannot be initiated in that part of the membrane that is undergoing an action potential, no matter how great the strength of the stimulus.
B. The relative refractory period refers to the period of time during which another action potential can be initiated in that part of the membrane that has just undergone an action potential if a stronger than normal stimulus is applied.
C. The refractory period prevents the action potential from spreading back over the part of the membrane that just underwent an action potential.
D. The refractory period places an upper limit on the frequency with which a nerve cell can conduct action potentials.
E. All of the above choices are correct.
E
You might also like to view...
Compare and contrast the way in which lipophilic and hydrophilic hormones affect their target cells. Include in your answer the type of receptor used, the major events promoted inside the cell after these hormone attach to their specific receptors, and the relative amount of time required to see the effect of hormone binding
What will be an ideal response?
What structures enter and exit the kidney at the hilum?
A) the renal artery and ureter enter; the renal vein and the urethra exit at the hilum B) the renal vein and urethra enter; the renal artery and ureter exit at the hilum C) the renal artery and renal nerves enter; the renal vein and ureter exit at the hilum D) the renal artery and vein enter; the renal nerves exit at the hilum E) the renal artery and renal nerves enter; the renal vein and urethra exit at the hilum
Our ability to precisely locate a stimulus is ________ proportional to receptive field size.
A. inversely B. directly
The three arches of the foot
A. transfer weight from the tibia to the femur. B. distribute the weight of the body during standing and walking. C. form a hinge joint. D. are highest on the lateral side of the foot. E. form after birth.