A compound action potential is recorded using electrodes on a nerve. How does a nerve differ from an axon? Amplitude and duration of a compound action potential vary according to the stimulus intensity applied to the nerve. Given that there is no such variation in the action potential of a single axon, how can you explain this?
What will be an ideal response?
A nerve consists of many axons. A regular action potential is produced by a single axon, whereas a compound action potential is recorded by equipment from a nerve when multiple axons are producing action potentials, and the voltages add together. Increasing stimulus intensity increases the number of axons contributing to the compound action potential. This is because different axons have different threshold voltages, so increasing the voltage stimulates a larger number of axons.
You might also like to view...
Fast fibers, have larger fiber diameter, few mitochondria, contract fast, and fatigue soon?
a. true b. false
The function of yellow bone marrow is:
A) mineral storage. B) triglyceride storage. C) hematopoiesis. D) acid-base homeostasis.
Which of the following is true of type 1 diabetes mellitus?
A. Lack of insulin leads to hypertension and decreased fatty acids in the blood. B. Glucagon production will increase, which leads to hyperglycemia and ketoacidosis. C. Lack of insulin causes a decrease in glucagon production. D. Lack of insulin leads to hypoglycemia and ketoacidosis.
which muscle flexes, adducts and medially rotates the humerus?
a) pectoralis major b) trapezius c) brachialis d) pectoralis minor