Nervous System

Question 1

What is the Central Nervous System?

Answer 1

• the brain and spinal cord

Question 2

What is the Peripheral Nervous System?

Answer 2

• all nerves outside the brain and spinal cord
• communicates information from the body’s glands, muscles and organs to the brain
• and then to communicate information from the body’s glands, muscles and organs to the brain

Question 3

Somatic Nervous System

Answer 3

• communicates messages from the brain to skeletal muscles
• communicates messages from senses to the brain

Question 4

Motor Neurons

Answer 4

communicates messages from the CNS to the particular muscle that an organism intends to move

Question 5

Sensory Neurons

Answer 5

communicates messages from the senses to the CNS so our brain can interact with the environment

Question 6

Autonomic Nervous System

Answer 6

• controls non skeletal muscles (heart, pupils), internal organs and glands
  -the organs that carry out functions related to survival (digestion and heartbeat)

Question 7

Parasympathetic NS

Answer 7

Rest and Digest
- calms our body down : returns it to homeostasis
- constricts pupils
- slows heartbeat
- constricts airway

Question 8

Sympathetic NS

Answer 8

Fight or Flight
- prepares us for action
- dilate pupils
- increases heartbeat
- relaxes airway

Question 9

Interneurons

Answer 9

messages in brain and spinal cord
helps transmit information from sensory neurons and motor neurons