The pain associated with prolonged exercise may be alleviated by the release of _____ by the _____.
A)serotonin;liver
B)adrenaline;adrenal glands
C)acetylcholine;pituitary gland
D)endorphins;pituitary gland

Question

Quizplus · Accepted Answer

Endorphins are natural painkillers released by the pituitary gland during exercise or other strenuous activities. They bind to opioid receptors in the brain and spinal cord, reducing pain perception and promoting feelings of pleasure and well-being. Adrenaline (A) is released by the adrenal glands as part of the fight or flight response and can increase heart rate, blood pressure, and metabolic activity, but it does not directly alleviate pain. Acetylcholine (C) is a neurotransmitter that is involved in muscle contraction and other processes but is not known to have significant analgesic effects. Serotonin (A) is involved in mood regulation and other physiological processes but is not directly linked to pain relief.

The Pain Associated with Prolonged Exercise May Be Alleviated by the Release