The Nervous System Flashcards
Central nervous sytem
Brain
Spinal cord
Peripheral nervous system
All nerves and sensory organs
The Peripheral nervous system can be split into :
Somatic nervous system
Autonomic nervous system
What is the four other princple region of the brain?
Cerebrum
Cerebellum
Diencephalon
Brain stem
Features of the Cerebrum
Largest brain region
Responsible for complex aspects of consciousness like memory, personality and intelligence
Made of white and grey matter
What are the four lobes of the cerebrum?
Frontal lobe
Temporal lobe
Occipital lobe
Parietal lobe
Cerebellum
11%brain mass
Coordinates skeletal muscle contractions
regulates balance and posture
may have a role in language processing and recognition
Diencephalon
Partners with the cerebrum and cerebellum to:
Coordinate motor functions
play a role in consciousness
Control and integrate the autonomic nervous system
Regulate eating and thirst
Brain stem
Links the spinal cord to the higher regions of the brain
There are three parts of the brain stem
What are the three parts of the brain stem?
Mid brain - motor control, vision and hearing
Pons - helps control breathing rhythmns
Medulla Oblongata - handles respiration, digestion and circulation
Spinal cord
Delicate structure
Central region of grey matter surrounded by white matter
Features of a nerve cell
Dendrites
Axons
Axon terminal
Synpase
Schwann cells
Form myelin sheath on peripheral nerve axons
Myelin acts as insulating layer - high lipid content
Spaces between myelin called Nodes of Ranvier
