The Nervous System Flashcards
The Central Nervous System consists of…
Brain and Spinal Cord.
The Peripheral Nervous System consists of…
Cranial and Spinal Nerves.
What is a neuron?
A nerve cell body that relays information to the CNS.
What is a nerve?
An axon bundle.
2 hemispheres in the cerebrum.
Sulci and Gyri.
Grey/White matter in the cerebrum.
White = connecting fibres Grey = cortex
The basal ganglia consists of…
Grey matter.
The brain stem is made up of…
The midbrain, pons and medulla.
The role and location of the Cerebellum…
Posterior to the brainstem and responsible for maintaining balance, posture, muscle tone and co-ordinating movement.
The lobes of the Cerebrum.
Frontal = motor, cortex, intellect, planning, mood and social judgement. Parietal = general senses and taste. Temporal = auditory complex. Occipital = visual cortex.
What protects the brain?
The skull and meninges.
Structure of the meninges and CSF.
Meninges = dura mater, arachnoid mater and pia mater. CSF = found in the subarachnoid space between the pia mater and arachnoid mater.
Number of spinal nerves.
31: 8 cervical, 12 thoracic, 5 lumbar, 5 sacral and 1 coccygeal.
Number of cranial nerves.
12
Blood supply to the brain.
Via internal carotid artery and vertebral arteris.
