ZOO 4990L - Gross Anatomy Lab III

Dissections of October 23 - 25, 2001

N.B.     In each dissection some names appear in parentheses. These are structures that may not readily be found during your dissection, i.e., look for them but do not spend too much time on them so that you have time to comlete the laboratory. Many of these structures will be exposed more completely in future dissections or are best observed in your atlas. Also, there will be important structures listed that are not found in your dissector (Hansen, 1998); information about these items can be found in your text (Jenkins, 1998; Moor and Augur, 1996; Stern, 1997).



ORBIT AND EYE (Ch. 7; pp. 145-150)
myology
	levator palpebrae superioris
	(anulus tendineus)
		superior rectus
		inferior rectus
		medial rectus
		lateral rectus
	superior oblique
	inferior oblique

neurology
	optic n (CN II)
	oculomotor n (CN III)
		(ciliary ganglion)
	trochlear n (CN IV)
	opthalmic division of trigeminal n (CN V1)
		frontal n 
			supratrochlear n
			supraorbital n
		(lacrimal n)
		(nasociliary n)
	abducens n (CN VI)

angiology
	opthalmic a
		(central a of the retina)

splanchnology
	lacrimal gland
	eye
		conjunctiva
		external or fibrous coat [tunica fibrosa bulbi]
			cornea
			sclera
		middle or vascular coat [tunica vasculosa bulbi]
			choroid
			ciliary body
			iris
		internal or retinal coat [tunica interna bulbi]
			retina
				optic disc
			lens
				pupil
		chambers 
			anterior
			posterior
			vitreous



EAR (Ch. 7; pp. 172-177)

Dissection notes


 Dissection

	inner ear
		facial n (CN VII)
			(geniculate ganglion)
				(greater petrosal n)
		vestibulocochlear n (CN VIII)
		cochlea
		semicircular canals

	middle ear
		malleus
		incus
		stapes
		tympanic membrane
		chorda tympani (CN VII)
		auditory tube
		(tensor tympani muscle)
		mastoid air cells

	external ear
		auricle
		external acoustic meatus
		tympanic membrane

 Ear Model

	external ear
		auricle
		external acoustic meatus
		tympanic membrane
		tympanic anulus

	middle ear
		middle ear cavity
		auditory tube 
			ostium to middle ear cavity
			ostium to nasopharynx
		malleus
			head
			handle
		incus
		stapes 
		chorda tympani (CN VII)
		tensor tympani muscle
	inner ear

		vestibule
			fenestra vestibuli
		semicircular canals
			ampullae
			anterior, posterior and lateral
		cochlea
			vestibular canal
			tympanic canal
			cochlear duct
			organ of Corti
		vestibulochoclear n (CN VIII)
			

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