When Electromagnetic Waves from the Sun Reach the Human Eye

question 69

Multiple Choice

When electromagnetic waves from the Sun reach the human eye, they stimulate antenna-like nerve endings in the ____.

• A)iris
• B)retina
• C)pupil
• D)cornea
• E)sclera

---

Definitions:

Dopamine

A neurotransmitter involved in many functions, including motivation, reward, attention, and the regulation of movements.

Serotonin

Serotonin is a neurotransmitter that plays a key role in mood regulation, digestion, sleep, and other bodily functions.

Endorphins

Neurochemicals in the brain that act as natural painkillers and also boost feelings of pleasure or well-being.

Cerebral Cortex

The Cerebral Cortex is the outer layer of neural tissue of the cerebrum in the brain, playing a key role in memory, attention, perception, awareness, thought, language, and consciousness.