Introduction to Basic Anatomy and physiology of nervous system

AQUATIC RESCUE MOOC

THE NERVOUS SYSTEM

Objectives

State the major parts of nervous system Recall the divisions of the central nervous

system Describe the basic functions of the nervous

system Describe the injury sustained during water

activity may disrupt the normal function of the nervous system.

The nervous system Has two major parts: the central nervous system (CNS) and

the peripheral nervous system (PNS) The central system is the primary command center for the

body, and is comprised of the brain and spinal cord. The peripheral nervous system consists of a network of

nerves that connects the rest of the body to the CNS. Peripheral system nerves branch from either the brain stem

or the spinal cord. Each nerve is connected to a particular area of the torso or limbs and is responsible for communication to and from those regions.

The nervous system

Central Nervous System (CNS)

The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control over body movement. Like a central computer, it interprets information from our eyes (sight), ears (sound), nose (smell), tongue (taste), and skin (touch), as well as from internal organs such as the stomach.

The spinal cord is the highway for communication between the body and the brain. When the spinal cord is injured, the exchange of information between the brain and other parts of the body is disrupted.

Peripheral nervous system (PNS)

subdivided into smaller components: the somatic and autonomic systems.

The somatic involves parts of the body a person can command at will, and

the autonomic helps run involuntary functions such as pumping blood, control blood pressure, regulate body temperature, digestion, metabolism, fluid and electrolyte balance, sweating, urination, defecation, sexual response, and other processes.

The CNS and PNS can suffer from an injury during water activity following head, spinal and limbs trauma.