Coordination and Response

Two types of Nervous System

Central nervous system and Peripheral nervous system

What travels through neurons

Electrical impulses

What does the nervous system help with

Coordination and regulation of body functions

What is a Nerve Impulse

Electrical signal which passes along the nerve cells called neurons and transmits information throughout the nervous system.

What is the function of Axons

They reduce the time wasted when the impulse is transferred from one neurone to another

What is a Motor Neurone

A motor neurone carries impulses from the Central Nervous system to effectors such as muscles and glands

What is a Sensory Neurone

A sensory neurone carries impulses fro mthe sense organs (sensory receptors) to the central nervous system

What is a Relay Neurone

The middleman inside the CNS connects sensory to motor neurones

Define Reflex Action

Automatically and rapidly integrates and coordinates the stimuli with the responses of effectors

Which neurones does a reflex action require

Sensory, relay, and motor neurones.

What is the gap between neurones called

A synapse

How the simple reflex arc works

1. A stimulus affects a receptor

2. A sensory neurone carries the impulses from the receptor to the spinal cord

3. Connector/Relay neurone carries impulse slowly across spinal cord

4. The motor neurone carries impulses from the cns to the effector

5. The effector which is either a muscle or a gland carries out the resonse