nervous system Flashcards
what does the central nervous system consist of
spinal cord and brain
what is the cns protected by
the skull, vertebrae and meninges
what are meninges
a protective membrane
what cushions and protects the cns
cerebrospinal fluid
what is cerebrospinal fluid
spaces between meninges filled with other it and cushions cns
what does the central cord have
it’s filled with cerebrospinal fluid
why does the spinal cord tract cross at the neck
so the left side of brain can control right side body
what does the brain have billions of
neurons and glial cells
what is the brain divided into
the unconscious brain and conscious brain
what does the unconscious brain consist of
medulla oblongata, hypothalamus, thalamus and cerebellum
what does medulla oblongata control in unconscious brain
heart rate, breathing, blood pressure and reflex’s
what does hypothalamus control in unconscious brain
homeostasis
what is homeostasis
controls centres for sleep,hunger,thirst, body temp and water balance
what does thalamus control in unconscious brain
it’s the relay station, receives sensory info from all parts and send them to the cerebrum
what does cerebellum control in unconscious brain
muscle coordination and balance, all muscles work together
