Bright light affects the timing of body rhythms by reducing the amount of melatonin produced by the
A) adrenal glands.
B) pineal gland.
C) pituitary gland.
D) pancreas.

Question

Quizplus · Accepted Answer

Melatonin is primarily produced by the pineal gland in response to darkness, and bright light exposure reduces its production. The adrenal gland produces hormones such as cortisol, which are involved in the stress response, but not melatonin. The pituitary gland produces hormones such as growth hormone and thyroid-stimulating hormone, but not melatonin. The pancreas produces insulin and glucagon, which are involved in glucose regulation, but not melatonin.

Bright Light Affects the Timing of Body Rhythms by Reducing