Nervous System and Neurons

Front

What is the main function of the nervous system?

Back

To coordinate and control the body's responses to internal and external stimuli.

Front

What are neurons?

Back

The basic functional units of the nervous system that transmit signals.

Front

What is a neurotransmitter?

Back

A chemical messenger that transmits signals across a synapse from one neuron to another.

Front

What role does acetylcholine play in the nervous system?

Back

It is a neurotransmitter associated with muscle contractions.

Front

What is the peripheral nervous system (PNS)?

Back

The part of the nervous system that connects the central nervous system to the limbs and organs.

Front

What is the central nervous system (CNS)?

Back

The part of the nervous system that includes the brain and spinal cord.

Front

How many cranial nerves are there in the human body?

Back

12 cranial nerves.

Front

How many spinal nerves are there in the human body?

Back

31 spinal nerves.

Front

What is the function of the spinal cord?

Back

To transmit signals between the brain and the rest of the body.

Front

What is the role of the brain in the nervous system?

Back

To process information and coordinate responses.