CNS

As organisms get more complex, cells become specialized to perform specific functions in the body. What is the function for the cell shown?

• contract and shorten movement

• provide coverage and protection

• carry impulses around the body

• connects parts together

Tags

NGSS.MS-LS1-2

CNS full name

• Central nervous system

• Central neurone system

• Centre nervous system

• Center nervous system

CNS consists of...

• Cranial nerve

• Brain

• Spinal nerve

• Spinal cord

Function of brain

• controls all voluntary actions of the body

• to transmit impulses from the sensory organ through central nervous system to the effector to respond accordingly

• controls the reflex actions

Function of spinal cord

• controls all voluntary actions of the body

• to transmit impulses from the sensory organ through central nervous system to the effector to respond accordingly

• controls the reflex actions

What is a neurone?

• Basic unit of the nervous system

• Receives impulse

• Carries impulses

• Transmit impulses out of the cell body

Stimulus --> ? --> brain --> effector --> response

Complete the impulse pathway

• Nerve

• Impulse

• Affector

• Voluntary

Which of following are voluntary action

• Singing

• Heart beat

• Photosynthesis

• Drawing

Action that occur immediately without conscious control or prior thought

• Voluntary action

• Involuntary action

Involuntary action involve

• Medulla oblongata

• Spinal cord

• Affector

• Effector