Describe the Biological Actions by Which Certain Stimuli Are Able

question 19

Essay

Describe the biological actions by which certain stimuli are able to lower reactivity to pain.

---

Definitions:

Glands

Organs in the body that secrete hormones or other substances directly into the blood or surrounding tissues.

Organs

Structures composed of different tissues that perform specific functions within an organism, such as the heart, liver, or lungs.

Melatonin

A hormone produced by the pineal gland that regulates sleep-wake cycles.

Pituitary Gland

A small endocrine gland in the brain that produces hormones which regulate vital body functions and other endocrine glands.