The nervous system 2

• Biologie
• Middelbare school
• vwo
• Leerjaar 3

Welcome everyone!

Today:

Discussing homework (WB page 54)

Explanation about nervous system

Making exercises 

What are we going to learn to day?

Today we will be learning:

What the nervous system consists of. 

How the nervous system generally works. 

Nervous system

The nervous system, just like your endocrine system makes sure communication within your body takes place. 

It has 2 parts: the central nervous system and the peripheral nervous system. 

Receptor --> effector 

Neurones

While the cell body are always in or around the CNS (central nervous system), the ''legs'' (axons) of neurones can get very long. 

Impulse frequency 

Neurones

Neurones pass a impulse over to another neuron through a synapse, where a certain chemical (neurotransmitter) flows through. 

Neurotransmitters

Nerves

Reflexes

Sometimes your body needs to react very fast, or it does something autonomously. It does so through reflexes. 

During reflexes, the brain doesn't make a new impuls. But the impuls gets to the spinal cord, and them immediately goes to the effector. 

Get to work!

The homework for next week are the exercises of page 57 of the workbook and the corresponding exercises of the textbook.