nervous System Flashcards
What is the nervous system
Specialised network of cells in the human body
What are the two main functions of the nervous system
- collect process and respond to information in the environment
- coordinate workings of different organs in the body
The two subsystems
Central nervous system
Peripheral nervous system
What is cns made up from
Brain and spinal chord
What is cns the origin of
Complex commands and decisions
What is the brain the centre of
Conscious awareness
What is the cerebral cortex
Brains outer layer that distinguishes us from animals
How is the brain split?
2 hemispheres, Left and right
What is the spinal cord an extension of
The brain
What is the spinal cord responsible for
Reflex actions
Passing messages to and from brain
Connects nerves to peripheral nervous system
What does the peripheral nervous system do
Transmits messages via neurons to and from cns
What are neurons
Nerve cells
How is the peripheral nervous system split up
Somatic nervous system
Autonomic nervous system
What does the somatic nervous system do
Transmits information from receptor cells in the sense organs to the cns and received infromation from the cns to control muscle movements
What does the autonomic nervous system do
Transmits information to and from bodily organs
