Special Senses Assignment

BIOLOGY 2423: Special Senses Assignment

Use the figures, tables, and textfrom Chapter 22 in Tortora to correctly complete this assignment. Be as complete and specific as possible in finding the locations and functions of these special senses structures, since this material will surface on Exam 3.

EYE COMPONENTS Memory Matrix

Eye Component / Part of which tunic (fibrous, vascular, or sensory?) / Function
(Hint: there is a table in the chapter)
Retina / Sensory
Vitreous Chamber / N/A / Contains vitreous body; helps maintain shape of eyeball & keeps retina attached to choroids.
Ciliary Body
Fovea Centralis
(central fovea) / Small depression in macula lutea (center of posterior retina) containing only cones for color vision
Anterior Cavity / N/A / Contains aqueous humor; maintains shape of eyeball, supplies O2 & nutrients to lens & cornea
Sclera
Iris
Lens / N/A
Choroid
Cornea

EXTRINSIC EYE MUSCLES Memory Matrix

Eye Muscle / Does the following movement(s)
(Hint: Use the actions from Exhibit 11.2 from chapter 11) / Which nerve innervates it?
(Hint: Use Fig. 19.18 from chapter 19)
Superior Rectus
Inferior Rectus
Medial Rectus
Lateral Rectus
Superior Oblique
Inferior Oblique

EAR COMPONENTS Memory Matrix

Ear Component / Part of external, middle or inner ear? / Function
(Hint: There is a table in the chapter)
Cochlear Duct / Contains endolymph; Transmits pressure waves from scala vestibule, scala tympani, & vestibular membrane to endolymph
External Auditory Canal / External
Round Window / Dissipates pressure waves from the scala tympani back into the middle ear
Vestibular Apparatus
Oval Window / Transmits vibrations from the stapes to set up fluid pressure waves in the perilymph of the scala vestibule in the cochlea
Tympanic Membrane
Pinna (auricle)
Saccule
Auditory (Eustachian) Tube
Semicircular Ducts
Utricle
Auditory Ossicles

INNER EAR Learning Exercise

The inner ear is also called the labyrinth, because of its complicated series of canals. It consists of the inner membranous labyrinthouter that is enclosedby an outer bony labyrinth. Use Fig. 22.12 to visually aid you in this part of the assignment.

Inner Ear Component / Part of bony or membranous labyrinth? / If part of membranous labyrinth, then in what part of the bony labyrinth does it reside?
Semicircular Canals / N/A
Cochlear Duct
Utricle / Membranous
Scala Vestibuli
Vestibule / Bony / N/A
Saccule
Semicircular Ducts / Semicircular Canal
Cochlea / Bony / N/A
Scala Tympani

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