ZOO 4990L - Gross Anatomy Lab III

Dissections of September 18 - 20, 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).

ANTERIOR TRIANGLE OF THE NECK (pp. 127-132)

Dissection notes

Contrá the dissector, simply reflect the sternocleidomastoid from its clavicular attachment (p. 128; Section D1)
Contrá the dissector it is not necessary to sever the infrahyoid muscles to observe the internal laryngeal n (p. 130; Section D.2); nor is it necessary to remove the submandibular gland (p. 131, Section E), nor is it necessary to cut the thyroid or its blood supply to expose the recurrent laryngeal nn and parathyroid glands (p. 132, Section F); simple cleaning and loosening cleaning of these areas will permit observation of the desired structures.

landmarks/regions
	hyoid
	thyroid cartilage
	cricoid cartilage
	trachea
	anterior cervical triangle
		(muscular triangle)
		(carotid triangle)
		(submandibular (digastric) triangle)

splanchnology
	cricothyroid ligament
	thyrohyoid membrane
	submandibular [salivary] gland
	thyroid gland
	(parathyroid glands)

myology
	infrahyoid muscles
		omohyoid
		sternohyoid
		sternothyroid
		thyrohyoid
	cricothyroid
	mylohyoid
	anterior digastric
	posterior digastric
	stylohyoid
	hyoglossus

angiology
	common carotid a
		internal carotid a
			(carotid sinus)
			(carotid body)
		external carotid a
			(ascending pharyngeal a)
			superior thyroid a
				superior laryngeal a
			lingual a
			facial a
			occipital a
	internal jugular v
		facial v
		linguial v
		superior thyroid v

neurology
	hypoglossal n (CN XII)
	ansa cervicalis
		(superior root)
		(inferior root)
	vagus n (CN X)
		superior laryngeal n
			(internal laryngeal n)
			(external laryngeal n)
		recurrent laryngeal n
	(mylohyoid n (CN V3))

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