Sensory Organs: Eye and Ear

ZOOL: 2325

Name all the indicated structures in each layer

1. Fibrous Tunic of the Eyeball

- Sclera

- Cornea

2. Vascular Tunic of the Eyeball

- Choroid

- Ciliary Body: Ciliary muscle and Ciliary processes

- Iris: Pupil

3. Internal Tunic of the Eyeball

- Retina: Ora Serrat of the Retina, Macula lutea of the Retina (Fovea Centralis of the Retina), Disc of the Optic Nerve

- Lens: Zonular Fibers

- Anterior chamber of the eyeball

- Poster Chamber of the Eyeball: Aqueous Humor

- Vitreous Chamber of the Eyeball: Vitreous Humor

Label 1-7

1. Levator palpebrae superioris muscle (elevates superior eyelid)

2. Superior rectus muscle (directs visual axis superiorly)

3. Inferior rectus muscle (directs visual axis inferiorly)

4. Medial rectus muscle (directs visual axis medially)

5. Lateral rectus muscle (directs visual axis laterally) LR6

6. Superior oblique muscle (directs visual axis laterally and inferiorly) SO4

7. Inferior oblique muscle (directs visual axis laterally and superiorly)

Label the parent structure and two components

1. Conjunctival coat

2. Palpebral Conjunctiva

3. Bulbar conjunctiva of the eyeball

Name the parent structure and 7 associated components

Lacrimal Apparatus

1) Lacrimal gland

2) Superior lacrimal punctum (opening)

3) Inferior lacrimal punctum (opening)

4) Superior lacrimal canaliculus

5) Inferior lacrimal canaliculus

6) Lacrimal sac (reservoir)

7) Nasolacrimal duct (passageway)

Label parent Structure along with 1-7

External Ear

1) Auricle (pinna)-entire ear

2) Helix of the auricle

3) Antihelix of the auricle

4) Scapha

5) Tragus

6) Antitragus

7) Intertragic notch

Name the structure

External Acoustic Meatus

Name the Parent Structure and 1-3 (and the opening of three)

1) Tympanic membrane

2) Tympanic cavity (space)

3) Auditory tube (pharyngeal opening of the auditory tube)

Name the three auditory ossicles and their joints

1. Malleus

- Incudomallear joint

2. Incus

- Incudostapedial Joint

3. Stapes

- Base of the Stapes

- Tympanostapedial syndesmosis

Name the muscles of the middle ear

1. Stapedius muscle (reduces vibration of the stapes

2. Tensor Tympani muscle (tenses the tympanic membrane)

What is this structure parented to?

Temporal Bone

1. Cochlea of the temporal bone

2. Vestibule of the temporal bone

3. Anterior semicircular canal of the temporal bone

4. Posterior semicircular canal of the temporal bone

5. Lateral semicircular canal of the temporal bone

6. Perilymph

What is the major area of the ear? What is the labyrinth called? What are the associated structures

Internal Ear

Membranous Labyrinth

1. Endolymph

2. Cochlear duct

What are all the associated structures within the inner

1) Spiral organ

2) Tectorial membrane

3) Cochlear duct (endolymph)

4) Scala vestibuli (perilymph)

5) Scala tympani (perilymph)

Name the structures of the membranous labyrinth

1. Utricle

2. Saccule

Name the windows

1. Vestibular window of the temporal bone

2. Cochlear window of the temporal bone