Download Lab #15 - Sensory Structures

BIOL 2101
Lab 15, page 1
Lab #15 - Sensory Structures
A. Study a slide of olfactory epithelium and be able to identify olfactory cells and cilia.
B. Study a slide of the tongue and be able to identify:
1. papillae
2. taste buds
C. Study models and diagrams of the eye and be able to identify:
1. fibrous tunic
a. sclera*
b. cornea*
c. scleral venous sinus (canal of Schlemm)
2. vascular tunic
a. choroid*
b. ciliary body
c. ciliary muscle
d. ciliary processes
e. suspensory ligaments (ciliary zonule)
f. iris*: spinctor pupillae m., dilator pupillae m.
g. pupil*
3. sensory tunic/retina*
a. ora serrata retinae
b. macula lutea
c. fovea centralis
d. optic disc*
Strong/Fall 2008
BIOL 2101
Lab 15, page 2
4. lens*
5. anterior segment*, anterior and posterior chambers
6. aqueous humor*
7. posterior segment*
8. vitreous humor*
9. optic nerve*
10. extrinsic muscles: superior rectus, medial rectus, inferior rectus, lateral rectus,
superior oblique and trochlea, inferior oblique
D. Be able to identify the structures marked with an * on the cow or sheep eye.
E. Study a slide of the retina and be able to identify:
1. nervous layer: nuclei of ganglion cells, nuclei of bipolar cells, nuclei of rods and
cones, outer segments of rods and cones
2. pigmented layer
F. Study a diagram of the retinal layers and be able to identify:
1. ganglion cell layer
2. bipolar cell layer
3. rods and cones
4. pigmented layer
G. Study eye models and diagrams and be able to identify:
1. palpebrae
2. palpebral fissure
3. medial and lateral canthi (sing. = canthus)
4. lacrimal caruncle
5. levator palpebrae superioris
Strong/Fall 2008
BIOL 2101
Lab 15, page 3
6. conjunctiva: palpebral vs ocular
7. conjunctival sac
8. lacrimal gland
9. lacrimal puncta
H. Study models of the ear and be able to identify:
1. external ear
a. pinna
b. external auditory canal (meatus)
c. tympanic membrane
2. middle ear
a. ossicles
b. malleus
c. incus
d. stapes
e. oval window
f. round window
g. pharyngotympanic (auditory or Eustachian) tube
h. tensor tympani
3. inner ear
a. bony labyrinth (cavity in petrous portion of temporal bone)
b. semicircular canals
c. ampulla
d. vestibule
Strong/Fall 2008
BIOL 2101
Lab 15, page 4
e. cochlea
f. membranous labyrinth
g. semicircular ducts
h. utricle
i. saccule
j. cochlear duct
4. vestibulocochlear nerve
a. vestibular branch of vestibulocochlear nerve
b. vestibular ganglia and sensory cells
c. cochlear branch of vestibulocochlear nerve
5. internal carotid a.
6. internal jugular v.
7. temporal bone
I. Study the cochlea cross section model and be able to identify:
1. scala vestibuli
2. vestibular membrane
3. cochlear duct
a. organ of Corti
b. supporting cells
c. hair cells
d. tectorial membrane
4. basilar membrane
5. scala tympani
Strong/Fall 2008
BIOL 2101
Lab 15, page 5
6. endolymph
7. perilymph
8. modiolus
9. spiral lamina
10. spiral ganglion
a. sensory cell bodies
J. Study a slide of the cochlea and be able to identify:
1. scala vestibuli
2. vestibular membrane
3. cochlear duct
4. basilar membrane
5. scala tympani
6. organ of Corti
a. hair cells
b. tectorial membrane
Strong/Fall 2008