Part 3:
​  Slide of Retina

    Special Senses Lab

  August 26: Hearing

     Part 1:
  Eye Anatomy

Part 1: Using the Eye Model, Identify:
1.  Lacrimal apparatus = lacrimal gland 🡪 lacrimal ducts
    🡪 lacrimal puncta /lacrimal canals 🡪 lacrimal sac
2. Palpebral Conjunctiva vs ocular (bulbar) conjunctiva
3. Extrinsic eye muscles move eyeball in socket: 
     lateral rectus, medial rectus, superior rectus, inferior rectus,
     inferior oblique, superior oblique
4. Eye Wall Organization & Internal Anatomy:
    Fibrous Layer: sclera and cornea    
    Vascular Layer:  choroid, ciliary body, pupil,iris
    Sensory Layer/ Retina:  neural layer w/ rods & cones
    Optic disc, Macula lutea, Fovea centralis, Lens
    Suspensory ligaments, Aqueous humor in anterior compartment
    Vitreous body in posterior compartment

Part 2: Cow Eye Dissection (see video)
Part 3: Slide of Eye Wall w/ sclera, choroid, and 3 layers of cells = retina
Part 4: Visual Tests: Blind Spot, Astigmatism, Acuity

  Part 2: Cow Eye Dissection

 Part 1: Using the model, identify:
 1. External Ear with Pinna (auricle) & lobule
     External auditory canal
 2. Middle Ear:  Auditory ossicles: malleus, incus, stapes
     Auditory tube = Eustachian tube = Pharyngotympanic tube
 3. Inner Ear: Bony labyrinth = cochlea + vestibule
     + semicircular canals filled w/perilymph
     Cochlea with vestibule, Oval window, Round window
     Organ of Corti w/neurons that are stimulated by sound waves
     Semicircular canals: anterior, posterior & lateral
     Used to send equilibrium info via Vestibulocochlear nerve
     🡪 thalamus🡪 auditory cortex of temporal lobe

4. Trace Path of Sound Wave through the Ear:
    External Auditory Canal🡪  Tympanic membrane 🡪 Malleus 🡪
    Incus 🡪 Stapes 🡪 Oval Window 🡪   Vestibular duct (scala) of
    Cochlea🡪 Tympanic duct of Cochlea 🡪  Round Window

Part 2: 
    1. Define these clinical terms:
        Otitis media, Presbycusis, Nystagmus, Vertigo
    2. Explain the difference between “dynamic equilibrium” and
        “static equilibrium”
    3. Explain the difference between “conductive” deafness
​        and “neural” deafness

         Part 4:
​         Vision Tests