Neurons/nervous sytem

Question 1

structure of nervous stystem

Answer 1

nervous system
- peripheral nervous system: brain/spinal cord
- central nervous system
>somatic 
>autonomic: sympathetic/parasympathetic

Question 2

roles

spinal cord:

PNS:

SNS:

Sympathetic:

Parasympathetic:

Answer 2

spinal cord: connects brain and PNS

PNS: carries messages to/from CNS

SNS: voluntary muscles, sensory info to CNS

Sympathetic: arouses body to expend energy

Parasympathetic: calms body to conserve energy

Question 3

sensory neurons

motor neurons

interneurons

Answer 3

sensory: send information from sensory receptors like nose/mouth - only in PNS
motor: carry messages from CNS to muscles and organs - only in PNS
interneurons: link between sensory/motor neurons and CNS - only in brain/CNS

Question 4

anatomy of a neutron

Answer 4

cell membrane - protects cell

nucleus - brain of cell

dendrites - receive message and signals

cell body (soma)

axon

myelin sheath - protects and allows messages to pass through quickly

axon terminal

Synapses - send off signals