Human Body Unit Iii: Nervous System/cranial Nerve Overview

Front 1

Divisions of the brain

Back 1

-cerebrum
-cerebellum
-brainstem (midbrain, pons, medulla)

Front 2

Divisions of cerebrum

Back 2

-left/right hemispheres
-dienchephalon (hypothalmus)

Front 3

Divisions of brainstem (sup-->inf)

Back 3

-midbrain
-pons
-medulla

Front 4

Boundaries/contents of anterior cranial fossa

Back 4

-frontal bone (ant/lat)
-sphenoid bone-lesser wings (post/lat)
-sella turcica (sphenoid) (post)
-contains frontal lobe

Front 5

Boundaries of middle cranial fossa

Back 5

-temporal/parietal bone (lat)
-sphenoid bone-lesser wings (ant)
-sella turcica (sphenoid) (medial)
-temporal bone-petrous (post)
-contains temporal lobe

Front 6

Boundaries of posterior cranial fossa

Back 6

-sella turcica (ant/med)
-temporal bone-petrous (ant/lat)
-occipital bone (post)
-foramen magnum w/in posterior cranial fossa
-contains cerebellum, brainstem, occipital lobe

Front 7

central sulcus of brain

Back 7

separates frontal and parietal bones

Front 8

lateral sulcus of brain

Back 8

-separates frontal & temporal lobes
-separates parietal & temporal lobes

Front 9

Meningeal layers of brain (deep-->superficial)

Back 9

-pia mater
-arachnoid mater
-dura mater (inner layer)
-dura mater (outer layer/periosteum of skull)

Front 10

Pia mater of brain

Back 10

-innermost layer of meninges
-intimate with brain/brainstem
-follows gyri/sulci of brain

Front 11

arachnoid mater of brain

Back 11

-trabechulae between pia mater and dura mater
-creates subarachnoid space filled with CSF
-extends around brain/spinal cord

Front 12

dura mater (inner layer) of brain

Back 12

-extends around brain/spinal cord
-intimate and deep to outer layer of dura mater/periosteum

Front 13

Periosteum of brain

Back 13

-outer layer of dura mater
-lines inside of skull and extends around outer surface of skull
-intimate w/inner layer of dura mater

Front 14

subdural space

Back 14

potential space between dura mater and arachnoid mater

Front 15

epidural space

Back 15

-potential space between bone and periosteum/dura mater
-contains fat and veins

Front 16

falx cerebri

Back 16

-reflection from anterior to posterior between the left and right cerebral hemispheres
-extends from crista galli to internal occipital protuberance
-connected to tentorium cerebeli

Front 17

tentorium cerebeli

Back 17

-extension of dura mater that separates inferior occipital lobes from cerebellum
-connected to falx cerebri

Front 18

Cranial Nerve I name/origin

Back 18

-Olfactory n.
-cerebrum

Front 19

Cranial Nerve II name/origin

Back 19

-Optic n.
-cerebrum (diacephalon)

Front 20

Cranial Nerve III name/origin

Back 20

-Oculomotor n.
-midbrain

Front 21

Cranial Nerve IV name/origin

Back 21

-Trochlear n.
-dorsal midbrain

Front 22

Cranial Nerve V name/origin

Back 22

-Trigeminal n.
-pons

Front 23

Cranial Nerve VI name/origin

Back 23

-Abducens n.
-pons

Front 24

Cranial Nerve VII name/origin

Back 24

-Facial n.
-pons

Front 25

Cranial Nerve VIII name/origin

Back 25

-Vestibulocochlear
-pons

Front 26

Cranial Nerve IX name/origin

Back 26

-Glossopharyngeal n.
-medulla

Front 27

Cranial Nerve X name/origin

Back 27

-Vagus n.
-medulla

Front 28

Cranial Nerve XI name/origin

Back 28

-Accessory n.
-cervical spinal cord (C1-C5)

Front 29

Cranial Nerve XII name/origin

Back 29

-Hypoglossal n.
-medulla

Front 30

Olfactory n. fxn

Back 30

-CN I
-olfaction/smell

Front 31

Optic n. fxn

Back 31

-CN II
-vision

Front 32

Oculomotor n. fxn

Back 32

-CN III
-motor: extraocular mm.
-pre parasym: ciliary ganglion

Front 33

Trochlear n. fxn

Back 33

-CN IV
-motor: extraocular mm.

Front 34

Trigeminal n. fxn

Back 34

-CN V
-major sensory n. of head
-general sensory: all except oral pharynx & larynx
-motor: mastication mm., palate, middle ear, suprahyoid

Front 35

Abducens n. fxn

Back 35

-CN VI
-motor: extraocular mm.

Front 36

Facial n. branches

Back 36

-"Twerking zebras bit Miley Cyrus"
-temporal
-zygomatic
-buccle
-mandibular
-cervical

Front 37

Facial n. fxn

Back 37

-CN VII
-taste (ant. 2/3 tongue); geniculate ganglion
-motor: facial expression mm., middle ear, suprahyoid
-pre parasym: pterygopalatine & submandibular ganglion (salivation)

Front 38

Vestibulocochlear n. fxn

Back 38

-CN VIII
-hearing; cochlear ganglion
-equilibrium; vestibular ganglion

Front 39

Glossopharyngeal n. fxn

Back 39

-CN IX
-taste (post. 1/3 tongue); sup & inf ganglia
-general sensory: pharynx, middle ear; sup & inf ganglia
-motor: pharynx
-pre parasym: otic ganglion (salivation)

Front 40

Vagus n. fxn

Back 40

-CN X
-taste (posterior tongue/epiglottis); sup & inf ganglia
-general sensory: external ear, pharynx, larynx/vocal chords; sup & inf ganglia
-motor: palate mm., pharynx/larynx mm.
-pre parasymp

Front 41

Accessory n. fxn

Back 41

-CN XI (C1-C5)
-motor: SCM & trapezius

Front 42

Hypoglossal n. fxn

Back 42

-CN XII
-motor: tongue mm.