The nervous system

The brain and the spinal cord form which system in the body?

• The peripheral nervous system

• The central nervous system

• The reflex nervous system

• The central system

Which of these is an effector?

• Muscles and glands

• Brain

• Spinal cord

• Leg

Examples of a stimulus

• Sight

• Smell

• Touch

What is the function of a receptor in an automatic control system?

What is the term which is made up of the spinal cord and brain?

What is the role of sensory neurones?

• To send electrical impulses from receptors to the central nervous system

• To transport blood and neurones

• To carry information using electrical impulses to the organs.

Muscles and glands are both effectors. How would each of these respond to a nervous impulse?

• Muscles would contract and glands would secrete hormones

• Muscles would secrete hormones and glands would contract

• Glands will secrete hormones

Which part of the nervous system do motor neurones carry electrical impulses to?

What structure within a reflex arc is represented by the diagram below?

• Synapse

• Neurone

• Receptor

True or false? Reflex arcs don’t involve the conscious parts of the brain. Explain your answer.

• True. Reflex arcs pass through the spinal cord or unconscious parts of the brain.

• False. Reflex arcs pass through the conscious parts of the brain in order to protect the body.