Chapter 3.3 - Organization of the Nervous System

Question 1

Nerves

Answer 1

Bundles of axons and the glial cells that support them

Question 2

Nervous System

Answer 2

interacting network of neurons that convey electrochemical information throughout the body

Question 3

Central nervous system

Answer 3

Brain and spinal cord; receives sensory info from external world, and processes/coordinates iinfo to send commands to the skeletal and muscular system

Question 4

Peripheral nervous system

Answer 4

Set of nerves that carry involuntary and automatic commands that control blood vessels, body organism and glands; divided into sympathetic and parasympathetic nervous system

Question 5

Sympathetic nervous system

Answer 5

Nerves that prepare body for action in challenging or threatening situations; fight or flight

Question 6

Parasympathetic nervous system

Answer 6

helps body return to resting state; rest and digest

Question 7

Components of CNS

Answer 7

brain and spinal cord

Question 8

pinal reflexes

Answer 8

Pathways in the nervous system that generate muscle contractions

Question 9

Reflex arc

Answer 9

Neural pathway that connects reflex actions(interneurons relay sensory inputs to motor neurons that connect to arm muscles which direct you to retract your hand off a hot stove)

Question 10

Location of a spinal cord injury

Answer 10

Extent of abilities lost; the higher up the injury the more severe the injury