Neurons

Question 1

What are Electrical Impulses?

Answer 1

Refers to how signals are sent within a neuron (action potential)

Question 2

What are Chemical Impulses?

Answer 2

Refers to how signals are sent between neurons (neurotransmitters)

Question 3

What are the structures of a neuron?

Answer 3

• Dendrites
• Cell body (Soma)
• Nucleus
• Axon
• Myelin sheath
• Nodes of Ranvier
• Axon terminal

Question 4

What are the location, function and structures of the Sensory Neuron?

Answer 4

Location: Somatic division of PNS

Function: Converts stimuli from sensory organs into electrical impulses that are sent to relay neurons in the CNS

Structures: Long dendrites, short axons

Question 5

What are the location, function and structures of the Relay Neuron?

Answer 5

Location: CNS

Function: Receives sensation from Sensory neurons, decides how to respond, then sends that decision to Motor neurons in the PNS

Structures; Short dendrites, typically short axons

Question 6

What are the location, function and structures of the Motor Neuron?

Answer 6

Location: Somatic and autonomic divisions of PNS

Function: Transmits information from relay neurons away from CNS to skeletal muscles to move. Also connects with organs and glands to maintain bodily processes e.g breathing

Structures: Short dendrites, Long axons