Nervous Transmission

Nervous System

Contributors
Christian Bien Portrait_edited.jpg

Ben Whitten

tutorial.png

one.png
What is the nervous system?
Slide1.jpeg

The nervous system is the communication system and control centre of the body. With the endocrine system, it maintains a constant internal environment within the body. It is composed of two sections; the Central Nervous System (CNS) which is made up of the brain and spinal cord and the Peripheral Nervous System (PNS). The nervous system has different roles; it has receptors to detect stimuli (changes to the internal and external environment), transmits nerve impulses from receptors to the brain, analyses sensory input from different receptors, stores information (memory), integrated information and transmits nervous impulses from brain to muscles and glands in order to respond to stimuli.

two.png
What are neurons?
Slide2.jpeg

Image: Neuron image, Image by Dhp1080, Sourced Under a Creative Commons 4.0 License from Wiki Commons


Neurons or nerve cells are the anatomical and functional units of the nervous system; they are the only part of the body that conducts nerve impulses. There are three key components to a neuron;


  1. Cell body – The cell body consists of a mass of neuroplasm surrounding the nucleus; it contains the nucleus and directs the activities of the rest of the cell – the axon and dendrites extend from the cell body

  2. Dendrite – The dendrite is a branching structure, and acts to carry nerve impulses towards the cell body, referred to as an afferent process

  3. Axon – The axon is typically long and less branching; it acts to carry nerve impulses away from the cell body, known as the efferent process

Topic Menu
Nervous System
Types of Neurons
Conduction of a Nerve Impulse
Propagation of a Nerve Impulse
Transmission of a Nerve Impulse
Transmission Across a Synapse
Types of Receptors
Reflexes
Comparing Hormonal and Nervous Control
Students Walking Up Stairs_edited.jpg

Want your ATAR notes to empower over 77,000 students per year?

Logo-New-Large.png

Join the Team.
Empower Education.

three.png
What are the other components of neurons?

Sign Up for Free to Read More 

Get instant access to all content and subscribe to our weekly email list on study tips, opportunities and other free resources. 

It only takes a minute...

Slide3.jpeg
four.png
Slide4.jpeg
five.png
Slide5.jpeg
six.png
Slide6.jpeg
157-seven.png
Slide1.jpeg
156-eight.png
Slide8.jpeg