What are the three main subdivisions of the nervous system?

Key Points

How do nerves help the nervous system?

Cranial nerves and spinal nerves Cranial nerves transmit sensory information, including touch, vision, taste, smell, and hearing. Nerves that connect the spinal cord with other parts of the body are called spinal nerves. The brain communicates with most of the body through the spinal nerves.

Does the nervous system use neurons?

Neurons are the basic functional units of the nervous system, and they generate electrical signals called action potentials, which allow them to quickly transmit information over long distances. Glia are also essential to nervous system function, but they work mostly by supporting the neurons.

What function does the nervous system perform?

The nervous system plays a role in nearly every aspect of our health and well-being. It guides everyday activities such as waking up; automatic activities such as breathing; and complex processes such as thinking, reading, remembering, and feeling emotions. The nervous system controls: Brain growth and development.

What are the major subdivisions of the nervous system?

The nervous system as a whole is divided into two subdivisions: the central nervous system (CNS) and the peripheral nervous system (PNS).

• The nervous system is often divided into components called gray matter and white matter.
• The peripheral nervous system is subdivided into nerves, the autonomic system, and the somatic system.
• The enteric nervous system is an independent subsystem of the peripheral nervous system.

What are the two major subdivisions of the central nervous system?

The nervous system can be divided into two major subdivisions: the central nervous system (CNS) and the peripheral nervous system (PNS), shown in [link]. The CNS is comprised of the brain and spinal cord; the PNS connects the CNS to the rest of the body.

What are the three major subdivisions of the human nervous system?

• The central nervous system(brain and spinal cord)
• The peripheral nervous system.
• The autonomic nervous system.

Do nerves run through muscles?

At the neuromuscular junction (where nerves connect to muscles), the impulse crosses from the motor nerve to receptors on the motor end plate of the muscle, where the impulse stimulates the muscle to move.

Does the brain control the nervous system?

The brain is like a computer that controls the body’s functions, and the nervous system is like a network that relays messages to parts of the body.

What is the main organ of the nervous system?

The brain and the spinal cord make up the central nervous system. The nervous system is the most complex and highly organized body system. It receives information from the sensory organs via nerves, transmits the information through the spinal cord, and processes it in the brain.

What diseases are related to the nervous system?

Nervous system diseases

• Alzheimer’s disease. Alzheimer’s disease affects brain function, memory and behaviour.
• Bell’s palsy.
• Cerebral palsy.
• Epilepsy.
• Motor neurone disease (MND)
• Multiple sclerosis (MS)
• Neurofibromatosis.
• Parkinson’s disease.