Central Nervous System III

Biology 315: Gross and Microanatomy Laboratory

Auricle

collective structure

Lobule of the auricle

structure

Helix of the auricle

(Structure)

Tragus of the auricle

(Structure)

-On whole outer ear model

-Middle flippy thing

Concha of the auricle

(Depression)

-On whole outer ear model

-Most inner depression

-My piercing on the left ear

External acoustic meatus

(Passage)

-On whole outer ear model

-Probe will be going into the ear hole

Tympanic membrane

(Structure)

-On white base model

- First thing the probe will bump into when going into the ear

-Ear drum will be taken out

Oval window

(Opening)

-On wood base model

- Oval hole

Round window

(Opening)

-On wood base model

-Lower small circle

Mastoid cells

(Spaces)

-On wood base model

-Golf ball pink texture

Anterior wall

(Wall)

-Put piece together on white base model

Pharyngotympanic tube

(Passageway)

-On white base model

-Large tube going down

Malleus B.

(Structure)

-Attached to eardrum model

-Looks like a golf club, music note

Head of the malleus B.

(Feature)

-Attached to eardrum model

-Head of the music note

Handle of the malleus B.

(Feature)

-Attached to eardrum model

-Handle of music note

Incus B.

(Structure)

-Floating on malleus

-larger music note

Stapes B.

(Structure)

-Attached to eardrum model

-Stirrup

-Top of all white loopy structure

Head of the stapes B.

(Feature)

-Attached to eardrum model

-Little bump on top of stirrup

Footplate of the stapes B.

(Feature)

-Attached to eardrum model

-Where foot would be in stirrup

Semicircular canals

(Collective structure)

-On white loopy model

-All 3 circles

Anterior semicircular canals

(Structure)

-On white loopy model

-Back rest on chair

-#16 on model

Posterior semicircular canal

(Structure)

-On white loopy model

-Armrest on chair

Lateral semicircular canal

(Structure)

-On white loopy model

-Butt on chair

-#15

Vestibule of the semicircular canals

(Junction)

-On white loopy model

-Will pinch where all 3 rings connect

Cochlea

(Collective structure)

-Snail shell

-All lines on the shell

Modiolus of the cochlea

(Structure)

-Will open snail shell

white lines

Osseous spiral lamina of the cochlea

(Covering)

-Will open snail shell

-Flower petals

beige color

Scala vestibuli of the cochlea

structure

-Nasal look

-Right/ top space

Scala tympani of the cochlea

structure

-Nasal look

-Left/ bottom space

Helicotrema of the cochlea

structure

-Very tip of snail shell

-Looks like a nipple

Semicircular ducts

(Collective structure)

-On wood base model

-On loop pullout

-Clear tubes

Utricle

(Structure)

-On green base model

-Baby blue color

Saccule

(Structure)

-On green base model

-Light grey under the utricle

Cochlear duct

structure

blue dot

Vestibular membrane

Basilar membrane

Tectorial membrane

Spiral organ of Corti

Fibrous layer of the eye

collective region

Sclera

structure

-All of white around the eye

-On green base model

Cornea

structure

-On green base model

-Window in the front of the eye

Vascular layer of the eye

(Region)

-On large eye model

-On the inside wall

-Red layer in between white/orange

Choroid of the eye

(Structure)

-On large eye model

-Toward posterior part of the eye

-Thin part of the wall

Ciliary body

(Collective structure)

-On large eye model

-Thick part of vascular layer toward the front

Iris

(Collective structure)

-On large eye model

-Colored part of eyeball

Pupil

(Space)

-On large eye model

-Middle of the iris

-Hole

Constrictor pupillae muscle

(Structure)

-On large eye model

-Lines pupil

-Probe will trace around pupil hole

-Shown almost the same as the pupil

Dilator pupillae muscle

(Structure)

-On large eye model, will open up

-Lines going out of the pupil

-On closest ring to the pupil

Inner layer

(Region)

-On large eye model

-Everything on the inside

Retina

(Internal structure)

-On large eye model

-Only orange in model

Optic part of the retina

(Portion)

-On large eye model

-Orange part, same as the retina but a portion

Nonvisual part of the retina

(Portion)

-On large eye model

-All of the purple in the front layer

Macula

(Structure)

dracula

-On large eye model

-#8 on model

-Yellow circle to the left of the middle

Fovea centralis

(Feature)

-On large eye model

-#9 on model

-Slightly depressed, right next to #8

Optic disc

(Structure)

-On large eye model

-Yellow circle on back of the eye in the middle

-#7 on model

Optic nerve

(Structure)

-On large eye model

-Looks like corn

Central artery of the retina

(Structure)

-On large eye model

-Red line in middle of corn

Lens

(Structure)

-Shown on stand alone model

-Glass held in hand

-Pulled out of model

Anterior chamber of the eye

(Space)

-On big eye model

-Space in between outer lens/ iris

Posterior chamber of the eye

(Space)

-On big eye model

-Between inner lens and iris

Superior rectus M.

(Structure)

-On big eye model

-Superior muscle

-On top of eye

Inferior rectus M.

(Structure)

-On big eye model

-Bottom of eye

Medial rectus M.

(Structure)

-On big eye model

-Closest to trochlea

Lateral rectus M.

(Structure)

-On big eye model

-Lateral side

Superior oblique M.

(Structure)

-On big eye model

-Goes to trochlea

-Off center/ almost superior

Trochlea of the eye

(Structure)

-On big eye model

-Blue on top/ right of eye

Inferior oblique M.

(Structure)

-On big eye model

-Superior/ off center

-Cut off, short muscle

Levator palpebrae superioris M.

(Structure)

-On big eye model

-Attached to part on top

-Attached to brainy part

Superior and inferior eyelids

(Structures)

-On body 23-45

-Superior = Upper eyelids

-Inferior = Lower eyelids

Palpebral fissure

(Space)

-On body 23-45

-In between eyelids

Eyelashes

(Structure)

-On body 23-45

-Will poke hairs on own body or on cadaver

Lacrimal caruncle

(Structure)

-On body 23-45

-Medial part of the eye

-Where you get eye boogers

Lacrimal gland

(Structure)

-On body 23-45

-Brainy like structure

Lacrimal sac

(Structure)

-On long green base model

-Pink behind eye

-Medial side

CN III -> ciliary ganglion -> smooth muscle in eye -> constrict pupil

CN III flow

CN VII -> Pterygopalatine ganglion -> lacrimal gland -> increase tear production / CN VII -> sublingual ganglion -> submandibular gland -> increase salivation

CN VII flow (2 routes)

CN IX -> otic ganglion -> parotid gland -> increase salivation

CN IX flow

CN X -> Intramural ganglion -> cardiac muscle -> decrease heart rate / CN X -> intramural ganglion -> smooth muscle in digestive tract -> decrease blood flow

CN X flow (2 routes)

Sacral spinal cord -> intramural ganglion -> smooth muscle in pelvic organs -> increase urine excretion

sacral spinal cord flow

Upper thoracic spinal cord -> superior cervical ganglion -> smooth muscle in eye -> dilate pupil / Upper thoracic spinal cord -> upper thoracic chain ganglion -> cardiac muscle -> increase heart rate

upper thoracic spinal cord flow (2 routes)

Lower thoracic spinal cord —> celiac ganglion —> smooth muscle in stomach or intestines —> decrease blood flow

lower thoracic spinal cord flow