Lecture 3: Divisions of the nervous system

Question 1

what are the 5 main parts of the nervous system?

Answer 1

brain 
spinal cord
peripheral nervous system
autonomic nervous system 
Enteric NS

Question 2

what protects the brain?

Answer 2

Skull
meninges
cerebrospinal fluid

Question 3

what are the meninges?

Answer 3

Dura mater, Arachnoid, Pia mater

Question 4

what cushions the brain?

Answer 4

csf

Question 5

where is csf made?

Answer 5

The area in the lateral ventricles called choroid plexus.

Question 6

what is the brain stem?

Answer 6

controls things we do without thinking, like our heartbeat, breathing, and swallowing.

Question 7

what are the 12 cranial nerves?

Answer 7

1. Olfactory
2. Optic
3. Oculomotor
4. Trochlear
5. Trigeminal
6. Abducens
7. Facial
8. Vestibulo Cochlear
9. Glosso Pharyngeal
10. Vagus
11. Accessory
12. Hypoglossal

Question 8

what’s the function of the olfactory nerve?

Answer 8

sensory nerve, subserving the sense of smell

Question 9

what’s the function of the optic nerve?

Answer 9

Sensory nerve, subserving vision

Question 10

what’s the function of the oculomotor nerve?

Answer 10

motor control of extrinsic muscles of the eye

and parasympathetic supply for intrinsic muscles of the iris

Question 11

what’s the function of the trochlear nerve?

Answer 11

motor control of extrinsic muscles of the eye

Question 12

what’s the function of the trigeminal nerve?

Answer 12

sensory and motor. motor control of the jaw and facial sensations

Question 13

what’s the function of the Abducens nerve?

Answer 13

motor control of extrinsic muscles of the eye

Question 14

what’s the function of the facial nerve?

Answer 14

motor control of the facial muscles and parasympathetic supply to the salivary glands. subserve taste via chorda tympani

Question 15

what’s the function of the vestibulo-cochlear nerve?

Answer 15

hearing and balance

Question 16

what’s the function of the glossopharyngeal nerve ?

Answer 16

swallowing
parasympathetic supply t salivary glands
subserve sense taste from back off tongue

Question 17

what’s the function of the vagus nerve ?

Answer 17

parasympathetic outflow to the chestier and abdomen

afferent inputs from the viscera

Question 18

what’s the function of the spinal accessory nerve ?

Answer 18

motor, control of neck muscles and larynx

Question 19

what’s the function of the hypoglossal nerve?

Answer 19

motor control of the tongue