Human Nervous System Flashcards
Def of human nervous system
Primary internal system of communication
What does the human nervous system do
Collects protects and responds to information from environment. Co-ordinates the working of different organs and cells in the body
What are the 2 nervous systems
central nervous system
Peripheral nervous system
2 sections that make up CNS
Brain and spinal cord
What is the entire CNS encased in
Bone
The spinal cord is an
Extension of the brain
Function of spinal cord
Passes messages too and from the brain
The spinal cord connects nerves to
PNS
the spinal cord is responsible for
Reflex actions
2 key differences between PNS and CNS
- the entire CNS is encased in bone whereas PNS is located outside of this
- CNS is centre of all complex demands whereas PNS sends messages to CNS
2 types of peripheral nervous system
Somatic nervous system
Autonomic nervous system
Peripheral nervous system is made up from
All the nerves that are outside of the central nervous system
The PNS sends info to the CNS from…
The outside world
The PNS sends info from the CNS to…
Muscles and glands in the body
The somatic nervous system responds to info from
Sensory receptors
