1B3 Sensory System. the role of the CENTRAL NERVOUS SYSTEM (CNS) is to control all the actions of the body This CNS has been preserved for display in.

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Presentation transcript:

1B3 Sensory System

the role of the CENTRAL NERVOUS SYSTEM (CNS) is to control all the actions of the body This CNS has been preserved for display in a Science museum

The Central Nervous System (CNS) is made up of the brain and spinal cord… the brain takes up most of the space inside the skullthe spinal cord is found inside the backbone

Nerve cells carry information between the CNS and every area of the body… …nerve cells are very long narrow cells… …there are two types of nerves cells: 1.SENSORY nerves bring messages from the sense organs to the CNS 2.MOTOR nerves bring messages from the CNS to the muscles of the body

The sensory function of nerves is to gather information and take it to the CNS. sight smell taste touch sound

…the motor function of nerves is to take messages from the CNS to the muscles… “round of applause please”

Can you describe what is happening in this picture? This is called a reflex response – The message is dealt with by the base of the brain or Spinal Column

Motor from brain Sensory to brain CNS Brain and spinal cord

H/W P73 Q 1-5