Josh is running through campus in preparation from his Friday night football game but stumbles and falls, injuring his right knee. After an initial sharpness, the pain in his knee subsides to a dull ache. ___________ are chemicals released by the brain in reaction to a painful injury.
A)catecholamines
B)endorphins
C)corticosteriods
D)epinephrine

Question

Quizplus · Accepted Answer

Endorphins are chemicals released by the brain in reaction to a painful injury.
Key Takeaway: Endorphins are chemicals released by the brain when a person is engaging in strenuous exercise or when they have been injured or otherwise in pain. Endorphins act like opiates in the brain in that they are painkillers that also provide a general feeling of well-being.

Josh Is Running Through Campus in Preparation from His Friday