Ch. 5 Nervous System And Special Senses

Front 1

Cranial nerve I

Back 1

Olfactory nerve (S)

Front 2

Cranial nerve II

Back 2

Optic nerve (S)

Front 3

Cranial nerve III

Back 3

Occulomotor nerve (M)

Front 4

Cranial nerve IV

Back 4

Trochlear nerve (mixed)

Front 5

Cranial nerve V

Back 5

Trigeminal nerve (mixed)

Front 6

Cranial nerve VI

Back 6

Abducens nerve (M)

Front 7

Cranial nerve VII

Back 7

Facial nerve (M)

Front 8

Cranial nerve VIII

Back 8

Vestibulocochlear nerve (S)

Front 9

Cranial nerve IX

Back 9

Glossopharyngeal nerve (mixed)

Front 10

Cranial nerve X

Back 10

Vagus nerve (mixed)

Front 11

Cranial nerve XI

Back 11

Spinal accessory nerve (M)

Front 12

Cranial nerve XII

Back 12

Hypoglossal nerve (M)

Front 13

Central nervous system

Back 13

Brain and spinal cord

Front 14

Peripheral nervous system

Back 14

- 12 cranial nerves
- Autonomic Nervous System
~ parasympathetic "rest and digest"
~ sympathetic "fight or flight"

Front 15

Forebrain

Back 15

- cerebrum
~ conscious thought and action
- thalamus
~ directs incoming messages
~ switch board
- hypothalamus
~ releases hormones
~ controls involuntary ANS actions
~ influences homeostasis

Front 16

Midbrain

Back 16

Pathway for fibers carrying senses of hearing and sight

Front 17

Hindbrain

Back 17

- cerebellum
~ "little brain"
~ controls balance and coordination
- pons
~ controls respiration
- medulla oblongata
~ control of respiration and blood pressure

Front 18

Meninges

Back 18

- dura mater
(subdural space)
- arachnoid layer
(subarachnoid space)
- pia mater

Front 19

Blood brain barrier

Back 19

- protects brain from painful substances in blood stream
- allows anesthetic gas and analgesics into nervous tissue of brain

Front 20

Special Senses

Back 20

- sight
- taste
- smell
- hearing
- balance

Front 21

Gustation

Back 21

Sensation of taste

Front 22

Olfaction

Back 22

Sensation of smell

Front 23

Parts of eye

Back 23

Sclera Outer
Uvea ↕
Retina Inner

Front 24

Entropion

Back 24

Eyelid rolls inward and scratches cornea

Front 25

Ectropion

Back 25

Eyelid droops downward

Front 26

Cherry eye

Back 26

3rd eyelid swells (nictating membrane)

Front 27

Keratoconjunctivitis

Back 27

Pink eye; inflammation due to dryness

Front 28

Keratoconjunctivitis sicca

Back 28

Dry eye; due to lack of production of tears

Front 29

Cataracts

Back 29

Cloudiness in eye; doesn't significantly affect vision until advanced

Front 30

Nuclear sclerosis

Back 30

Affects rods and cones; cloudiness in eye; breakdown of lens fibers

Front 31

Glaucoma

Back 31

Increased pressure in eye due to fluid buildup; leads to retina damage

Front 32

Opthalmoscope

Back 32

Used to look inside of eye

Front 33

Parts of ear

Back 33

External
Middle ↕
Internal

Front 34

Aural hematoma

Back 34

Severing of blood vessels in pinna resulting in inflammation and hemorrhage

Front 35

Auditory ossicles

Back 35

* transmit vibrations
Malleus (hammer)
Incus (anvil)
Stapes (stirrup)