Question

what hormone causes you to become drowsy when it is released? what gland releases this hormone?melatonin.....pinealinsulin....pinealinsulin.....pancreasmelatonin.....pituitary

Explanation:

Melatonin is a hormone that regulates sleep - wake cycles and causes drowsiness. It is secreted by the pineal gland. Insulin is related to blood sugar regulation and is secreted by the pancreas. The pituitary gland secretes many hormones like growth hormone, but not melatonin.

Answer:

Melatonin......Pineal