Epinephrine and norepinephrine that are released from the adrenal glands affect target tissue for a longer period of time than the same substances released from neurons at their peripheral receptors. Why?
A) The effectors are less sensitive to epinephrine and norepinephrine released by the adrenal glands.
B) The hormones released from the adrenal glands bind to different receptors than those released from neurons.
C) The adrenal gland releases larger amounts of the neurotransmitters than the neurons.
D) There are no enzymes to break down epinephrine and norepinephrine in the blood and very little in peripheral tissues.
E) The epinephrine and norepinephrine from the adrenal glands are released by sympathetic neurons, whereas parasympathetic neurons release these substances at the effector organs.
D) There are no enzymes to break down epinephrine and norepinephrine in the blood and very little in peripheral tissues.
You might also like to view...
HIV is spread through sexual intercourse, hypodermic needles and sneezing or coughing.
a. true b. false
The glands that produce catecholamines are indicated by ________
A) Label J
Groups of muscles are separated by which of the following?
A. Epimysium B. Fascicles C. Perimysium D. Fasciae E. Endomysium
mitosis
What will be an ideal response?