The nervous system

The nervous system is the communication and control system of the body. It works with the endocrine system to maintain homeostasis (body balance). The nervous system will sense changes inside and outside the body, interpret them and initiate appropriate action. The nervous system is made up of the:

^ central nervous system, comprising the brain and spinal cord

^ peripheral nervous system, comprising 12 pairs of cranial nerves arising from the brain and 31 pairs of spinal nerves arising from the spinal cord

^ autonomic system.

Thalamus

A small area of the brain that registers pain

Cerebellum

Controls balance and coordination of muscular activities and movement

Hypothalamus

Controls sleeping and waking, eating, drinking and speech

Figure 2.18 The brain.

Cerebrum

The main part of the brain. It is the largest in volume, and occupies most of the cranium. Divided into two halves, this part of the brain is responsible for thought, speech, memory, learning, imagination and decision making. The right side of the cerebrum controls activities on the left side of the body, and vice versa

Thalamus

A small area of the brain that registers pain

Hypothalamus

Controls sleeping and waking, eating, drinking and speech

Cerebellum

Controls balance and coordination of muscular activities and movement

Medulla oblongata

Controls the unconscious activities such as breathing, heart beat and digestion. This part of the brain is an extension of the spinal cord

Figure 2.18 The brain.

The peripheral nerves carry impulses inwards from sensory receptors in sense organs to the brain. They also carry impulses from the brain to muscles and glands.

Nervous tissue is composed of functional units called neurones, which conduct impulses, and the supporting tissue called neuroglia.

There are three types of neurone:

^^ Sensory neurones, which transmit stimuli from sensory organs to the spinal cord and brain. They convey sensations of pain, pressure, temperature, taste, sight etc.

^^ Motor neurones, which transmit stimuli from the brain and spinal cord to muscles and glands. They initiate the contraction of muscles and the action of glands.

^^ Interneurons, which form connections between neurones. They convey impulses from one neurone to another.

Peripheral Neuropathy Natural Treatment Options

Peripheral Neuropathy Natural Treatment Options

This guide will help millions of people understand this condition so that they can take control of their lives and make informed decisions. The ebook covers information on a vast number of different types of neuropathy. In addition, it will be a useful resource for their families, caregivers, and health care providers.

Get My Free Ebook


Responses

  • alisha
    Which carried massage from all parts of the body to the brain?
    11 months ago

Post a comment