Nervous System (P2)

Question 1

How are Nerve cells adapted for their function?

Answer 1

• Long and thin
• Branched connections enables them to pass messages.
• Myelin sheath / LIpid insulation

Question 2

How do chemicals travel through nerve cells?

Answer 2

electrical impulse contacts end of a nerve cell causing release of chemicals

Question 3

What are the two effectors?

Answer 3

Muscles and Glands

Question 4

What is an Reflex arc?

Answer 4

Nerve pathway that underlies our unconscious reflexes.

Question 5

What is the process of a reflex?

Answer 5

• Receptor cells detect a stimuli
• This stimulates a sensory neuron to carry an impulse to the CNS
• In the CNS the impulse is transferred to a relay neuron
• The impulses is transferred to a motor neuron which connects to a effector.