Question

Which of the following substances are classified as endogenous opioids?

1) Enkephalins
2) Dynorphins
3) Endorphins
4) Endomorphins

Answer 1

Enkephalins, endorphins, and endomorphins are classified as endogenous opioids.

Step-by-step explanation:

The substances classified as endogenous opioids are:

1. Enkephalins: Enkephalins are a group of peptides that act as neurotransmitters in the central nervous system and peripheral tissues. They have analgesic properties and are involved in pain perception and regulation.
2. Endorphins: Endorphins are a group of peptides that are released by the pituitary gland and the hypothalamus. They have similar effects to morphine and help to regulate pain and produce feelings of pleasure and well-being.
3. Endomorphins: Endomorphins are a group of peptides that bind to opioid receptors in the brain and spinal cord. They have potent analgesic properties and are involved in pain relief.