Nervous System

Front

What does CNS stand for?

Back

CNS stands for Central Nervous System, which includes the brain and spinal cord.

Front

What does PNS stand for?

Back

PNS stands for Peripheral Nervous System, which includes all the nerves outside the brain and spinal cord.

Front

What are dendrites?

Back

Dendrites are the parts of a neuron that receive signals from other neurons.

Front

What is the function of the cell body in a neuron?

Back

The cell body contains the nucleus and organelles, and it integrates signals received from dendrites.

Front

What is an axon?

Back

An axon is a long, thin structure that transmits electrical impulses away from the cell body to other neurons or muscles.

Front

What are axon terminals?

Back

Axon terminals are the endpoints of an axon where neurotransmitters are released to communicate with other neurons.

Front

What is the role of the iris in the eye?

Back

The iris controls the amount of light that enters the eye by adjusting the size of the pupil.

Front

What are motor neurons?

Back

Motor neurons are neurons that send signals to muscles to cause movement.

Front

What are sensory neurons?

Back

Sensory neurons are neurons that carry signals from sensory receptors to the central nervous system.

Front

What is the function of the spinal cord?

Back

The spinal cord transmits signals between the brain and the rest of the body and coordinates reflexes.