Nervous system Flashcard

Front

What is the main function of the nervous system?

Back

The main function of the nervous system is to coordinate and control the body's activities by transmitting signals between different parts of the body.

Front

What are the two main divisions of the nervous system?

Back

The two main divisions of the nervous system are the Central Nervous System (CNS) and the Peripheral Nervous System (PNS).

Front

What is a neuron?

Back

A neuron is a specialized cell that transmits nerve impulses; it is the basic building block of the nervous system.

Front

What are the three main parts of a neuron?

Back

The three main parts of a neuron are the cell body (soma), dendrites, and axon.

Front

What is the role of dendrites in a neuron?

Back

Dendrites receive signals from other neurons and transmit them to the cell body.

Front

What is the function of the axon?

Back

The axon transmits electrical impulses away from the cell body to other neurons or muscles.

Front

What is the myelin sheath?

Back

The myelin sheath is a fatty layer that surrounds the axon of some neurons, speeding up the transmission of nerve impulses.

Front

What is the function of the brainstem?

Back

The brainstem controls automatic functions such as breathing, heart rate, and sleep cycles.

Front

How many pairs of cranial nerves are there?

Back

There are 12 pairs of cranial nerves.

Front

What is the role of the cerebellum?

Back

The cerebellum is responsible for coordination, balance, and fine motor control.