ZOO 4990L - Gross Anatomy Lab III

Dissections of October 9 - 11, 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).

FACE AND PAROTID REGIONS (Ch. 7; pp. 134-138 and 150 - 152)

Face

Dissection notes

As in the neck, it is important that only the skin be removed in skinning the head; i.e., the superficial fascia and muscles must be left intact. Ask your instructor for assistance; a good guide to the proper depth will be the platysma muscle.
N.B. There are over twenty named muscles of facial expression, all innervated by the facial nerve (CN VII). In your dissection attempt to identify as many of these as possible using your atlas as a guide. However, for the exam you will be responsible for identifying only those muscles listed below.

myology
	platysma
	muscles of facial expression
		buccinator
		depressor anguli oris
		levator labii superioris
		zygomaticus major
		orbicularis oris
		orbicularis oculi
		nasalis
		occipitofrontalis
			frontalis
				galea aponeurotica
			occipitalis

angiology
	facial a 
		(inferior labial a)
	facial v

neurology
	facial n (CN VII)
		branches:  temporal, zygomatic, buccal, mandibular, cervical
	supraorbital n (CN V1)
	infraorbital n (CN V2)
	mental n (CN V3)

Parotid region

splanchnology
	parotid gland and duct

myology
	posterior digastric
	stylohyoid

angiology
	external carotid a
		superficial temporal a
			transverse facial a
		maxillary a

neurology
	facial n (CN VII)
		branches:  temporal, zygomatic, buccal, mandibular, cervical
	(auriculotemporal n; CN V3)





 
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