sac 5 nervous system

Question 1

the nervous system

Answer 1

enables our brain to obtain information about what is going on inside and outside the body

Question 2

3 main functions of the nervous system

Answer 2

1. to receive information
2. to process information
3. to coordinate a response to information

Question 3

interneuron

Answer 3

acts as a link between sensory and motor neurons that are found in the CNS

Question 4

spinal reflex

Answer 4

occurs in response to certain stimuli without any involvement of the brain
- involuntary
- automatic
- protects your body from danger

Question 5

central nervous system (CNS)

Answer 5

processes received information and activates appropriate responsive actions.
-central to all our mental processes

Question 6

CNS involves

Answer 6

BRAIN
network of cells that process information through nerve pathways and directs the response
SPINAL CORD
long bundle of nerve tissue from our brain.
- sensory neurons send information to the brain through the spinal cord and then the brain sends motor neurons back through the spinal cord to the body

Question 7

peripheral nervous system (PNS)

Answer 7

the whole network of nerves. sends information to and from the CNS

Question 8

SA/ME

Answer 8

sensory and afferent neuron.
motor and efferent neurons .

Question 9

PNS involves

Answer 9

SOMSTIC NERVOUS SYSTEM
nerves that carry sensory information to the CNS and motor information from the CNS
AUTONOMIC NERVOUS STYSTEM
carries messages between the CNS and internal organs and glands

Question 10

autonomic nervous system involves

Answer 10

SYMPATHETIC NERVOUS SYSTEM
prepares the body when we experience strong emotions or feel threatened (fight or flight)
PARASYMPATHETIC NERVOUS SYSTEM
calms and restores the body to normal state (homeostasis)

Question 11

afferent neurons

Answer 11

brings sensory info from sensory receptors to the brain

Question 12

efferent neurons

Answer 12

carries signals from the brain to the body. transports info regarding movement