Neurons

Question 1

Neurons

Answer 1

Basic building blocks of the nervous system

Question 2

Parts of a neuron + functions (6 parts)

Answer 2

• Cell body = Cell’s life-support center.
• Dendrites = Receives messages from other cells.
• Axon = Passes messages away from cell body to other neurons, muscles, or glands
• Neural impulse = Electrical signal travelling down axon
• Terminal branches of axon = Form junctions with other cells
• Myelin sheath = Covers axon of some neurons and helps speed neural impulses

Question 3

Sensory neurons

Answer 3

Neurons that carry incoming information from the sensory receptors to the brain and spinal cord. They have long dendrites and short axons.

Question 4

Relay neurons

Answer 4

These connect the sensory neurons to the motor or other relay neurons. They have short dendrites and short axons.

Question 5

Motor neurons

Answer 5

Neurons that carry outgoing information from the brain and spinal cord to the muscles and glands. They have short dendrites and long axons.