what are the 5 main parts of the nervous system?
brain spinal cord peripheral nervous system autonomic nervous system Enteric NS
what protects the brain?
Skull
meninges
cerebrospinal fluid
what are the meninges?
Dura mater, Arachnoid, Pia mater
what cushions the brain?
csf
where is csf made?
The area in the lateral ventricles called choroid plexus.
what is the brain stem?
controls things we do without thinking, like our heartbeat, breathing, and swallowing.
what are the 12 cranial nerves?
- Olfactory
- Optic
- Oculomotor
- Trochlear
- Trigeminal
- Abducens
- Facial
- Vestibulo Cochlear
- Glosso Pharyngeal
- Vagus
- Accessory
- Hypoglossal
what’s the function of the olfactory nerve?
sensory nerve, subserving the sense of smell
what’s the function of the optic nerve?
Sensory nerve, subserving vision
what’s the function of the oculomotor nerve?
motor control of extrinsic muscles of the eye
and parasympathetic supply for intrinsic muscles of the iris
what’s the function of the trochlear nerve?
motor control of extrinsic muscles of the eye
what’s the function of the trigeminal nerve?
sensory and motor. motor control of the jaw and facial sensations
what’s the function of the Abducens nerve?
motor control of extrinsic muscles of the eye
what’s the function of the facial nerve?
motor control of the facial muscles and parasympathetic supply to the salivary glands. subserve taste via chorda tympani
what’s the function of the vestibulo-cochlear nerve?
hearing and balance
what’s the function of the glossopharyngeal nerve ?
swallowing
parasympathetic supply t salivary glands
subserve sense taste from back off tongue
what’s the function of the vagus nerve ?
parasympathetic outflow to the chestier and abdomen
afferent inputs from the viscera
what’s the function of the spinal accessory nerve ?
motor, control of neck muscles and larynx
what’s the function of the hypoglossal nerve?
motor control of the tongue
