Central Nervous System

• support • protection (shock absorber) • transport/nutrition Contains glucose, protein, salt, urea Excess is reabsorbed into the blood stream Formed in the blood

Formed in the brain’s ventricles

• cranium and vertebral column • meninges • cerebrospinal fluid

Cerebral cortex is grey matter (outer layer) Inside the white matter Basal ganglia is inside the white matter

internal grey matter

sensory, motor, and association areas

interprets impulses from the senses

muscular movements

intellectual, emotional responses

• posture and balance - receives information from the inner ear • coordination of voluntary movement - receives sensory info from stretch receptors in muscles

cranium, dura mater, arachnoid, sub arachnoid, pia mater

has the same protection as the brain, bu the dura mater isn’t connected to bone; epidural space contains fat, connective tissue, vessels

A column that runs from the foramen magnum to L2 - around 44cm long

to the CNS from the receptor Sensory neurons (unipolar)

From the CNS to muscle Motor neurons (multipolar)

connector, association neurons bipolar

Lies in the middle of the brain, mostly concerned with homeostasis regulates ans, body control, food and water intake, urinary contractions, sleeping patterns

• thinking, reasoning, learning • memory • intelligence • sense of responsibility • perception of the senses • initiation, control of voluntary muscle contraction