a&p lab nervous system

A

semicircular canals

B

malleus

C

incus

D

auricle (pinna)

E

lobule

F

external acoustic meatus (auditory canal)

G

tympanic membrane

H

stapes

I

auditory tube

J

cochlea

K

vestibule

3 auditory ossicles

malleus, incus, stapes

A

external ear

B

middle ear (tympanic cavity)

C

internal ear

bony labyrinth

internal ear structures filled with fluid

membranous labyrinth

series of tubules in internal ear

A and N collectively (bony labyrinth)

vestibule

A (membranous labyrinth)

utricle

B (bony labyrinth)

anterior semicircular canal

B (membranous labyrinth)

anterior semicircular duct

C (bony labyrinth)

posterior semicircular canal

C (membranous labyrinth)

posterior semicircular duct

D (bony labyrinth)

lateral semicircular canal

D (membranous labyrinth)

lateral semicircular duct

E (and type of labyrinth)

ampulla(e) (membranous labyrinth)

F (and type of labyrinth)

ampulla(e) (membranous labyrinth)

G (and type of labyrinth)

incus (bony labyrinth)

H (and type of labyrinth)

malleus (bony labyrinth)

I (and type of labyrinth)

stapes (bony labyrinth)

J (and type of labyrinth)

oval window (bony labyrinth)

K (bony labyrinth)

cochlea

K (membranous labyrinth)

cochlear duct

L (and type of labyrinth)

cochlear branch (bony labyrinth)

M (and type of labyrinth)

vestibular branch (bony labyrinth)

N (membranous labyrinth)

saccule

vestibulocochlear nerve (VIII) branches

vestibular branch and cochlear branch

A

ora serrata

B

sclera

C

choroid

D

retina

E

macula lutea

F

fovea centralis

G

optic nerve

H

optic disc

I

suspensory ligaments

J

ciliary body

K

cornea

L

pupil

M

iris

A

lens

B

anterior cavity (with aqueous humor)

C

anterior chamber of anterior cavity

D

posterior chamber

E

posterior cavity (with vitreous humor)

A

choroid

B

sclera

C

dilator pupillae

D

sphincter pupillae

E

iris

F

pupil

A

superior rectus

B

medial rectus

C

inferior rectus

D

lateral rectus

A

superior rectus

B

lateral rectus

C

inferior oblique

D

inferior rectus

E

medial rectus

F

superior oblique

Lateral Rectus (action and cranial nerve)

Moves eye laterally; Abducens (VI)

Medial Rectus (action and cranial nerve)

Moves eye medially; Oculomotor (III)

Superior Rectus (action and cranial nerve)

Elevates eye and turns it medially; Oculomotor (III)

Inferior Rectus (action and cranial nerve)

Depresses eye and turns it medially; Oculomotor (III)

Inferior Oblique (action and cranial nerve)

Elevates eye and turns it laterally; Oculomotor (III)

Superior Oblique (action and cranial nerve)

Depresses eye and turns it laterally; Trochlear (IV)

A

superior rectus

B

lateral rectus

C

inferior rectus

D

inferior oblique

E

medial rectus

F

superior oblique

A

trigeminal nerve (V)

B

trochlear nerve (IV)

C

(R/L) olfactory tract

D

(R/L) olfactory bulb

E

optic nerve (II)

F

oculomotor nerve (III)

G

facial nerve (VII)

H

abducens nerve (VI)

I

hypoglossal nerve (XII)

J (3 nerves, unable to distinguish on this model)

glossopharyngeal nerve (IX)

vagus nerve (X)

accessory nerve (XI)

K

vestibulocochlear nerve (VIII)

A

skin of scalp

B

periosteum

C

bone of skull

D

dura mater

E

falx cerebri

F

superior sagittal sinus