Neurons Transmission^

Question 1

How do the neurons communicate?

Answer 1

by transmitting electric and chemical signals

Question 1

Types of Neurons

Answer 1

• sensory
• relay
• motor

Question 2

Sensory Neuron

Answer 2

• Carry messages from PNS to CNS
• Found in receptors
• Carry nerve impulses to the spinal cord and brain
  : in brain they are translated into sensations
• Not all sensory neurons reach the brain
  : some stop at spinal cord for quick reflex

Question 3

Relay Neurons

Answer 3

• between sensory input and motor output
• found in the brain and spinal cord
• allow sensory and motor neurons to communicate

Question 4

Motor Neuron

Answer 4

• Connect CNS to effectors
  : muscles and glands
• In CNS and control muscle movement
• steps
  : stimulated motor neuron
  : release neurotransmitters
  : bind to receptors on muscles
  : trigger a response
  = movement

Question 5

Structure Of NT (Order)

Answer 5

Dendrites
- carry nerve impulses (neurons to cell body)
Cell body
- nucleus (DNA/ genetic make up)
Nodes of Randier
- speed up transmission of impulse
- force it to jump across gaps
Axon
- carries impulses away from cell body
Terminal Buttons
- communicate across synapse to next neuron