U3 AOS1 Dot Point 1

Question 1

functions of the nervous system

Answer 1

sensory input > integration > motor output

Question 2

CNS (brain)

Answer 2

receives and processes info received by the body (sensory)

activates an appropriate response (motor)

Question 3

CNS (spinal cord)

Answer 3

receives sensory information from PNS > sends to brain

receives motor information from brain > sends to relevant parts of PNS

Question 4

PNS - somatic NS

Answer 4

conveys sensory info to CNS
motor messages to muscles
voluntary actions
skeletal muscles

Question 5

SAME

Answer 5

sensory - afferent
motor - efferent

Question 6

PNS - autonomic NS

Answer 6

involuntary actions
organs and glands
provides feedback to the brain about their activities
e.g breathing, sweat, digestion, heartbeat

includes sympathetic and parasympathetic NS

Question 7

sympathetic NS

Answer 7

dominates when under stress or threat

fight-flight activates

Question 8

parasympathetic NS

Answer 8

dominates when calm
maintains homeostasis