Question

The pineal body is considered as

• A. an endocrine gland
• B. an organ concerned with voluntary actions
• C. an organ concerned with vision
• D. a vestige of third eye and endocrine gland

Answer 1

The correct option is D

a vestige of third eye and endocrine gland

The correct option is D.

Explanation of the correct option:

1. The pineal is situated in the diencephalon behind the anterior choroid plexus in between the region of eyebrows which used to be considered a third eye in ancient times.
2. The pineal gland acts as an endocrine gland it secretes melatonin and serotonin hormone.
3. Melatonin is also known as sleep hormone and promotes sleep, the production is diurnal so it acts as a biological clock that may produce circadian rhythms.
4. It also lightens the skin color of certain animals and delays sexual maturation.
5. Serotonin helps brain cells and other nervous system cells to establish communication with each other and promotes sleeping, eating, and digestion.

Final answer: The pineal body is considered a vestige of third eye and endocrine gland.