Muscular Triangle & Endocrine Glands Flashcards
1
Q
What are the borders of the anterior triangle of the neck?
A
- inferior border of mandible
- anterior border of SCM
- midline of neck
2
Q
what is the roof composed of in the anterior triangle?
A
deep investing fascia around muscles
3
Q
what is the floor of the anterior triangle composed of?
A
pretracheal fascia & carotid sheathe
4
Q
what are the subdivisions of the anterior triangle?
A
- submandibular
- submental
- carotid
- muscular triangles/omotracheal
5
Q
what does the submandibular division of the anterior triangle contain?
A
- submandibular gland
- lymph nodes
- parts of CNXII (hypoglossal)
- mylohyoid nerve
- parts of facial artery & vein
6
Q
what are the suprahyoid muscles?
A
- mylohyoid
- digastric
- stylohyoid
- geniohyoid
7
Q
what are the infrahyoid muscles?
A
- sternohyoid
- omohyoid
- thyrohyoid
- sternothyroid
8
Q
why is the sternothyroid muscle different to other infrahyoid muscles?
A
it does not attatch to hyoid
9
Q
what is the overall function of suprahyoid muscles?
A
- elevation of the hyoid (swallowing) and larynx (tone production)
- constitute substance of floor of mouth
10
Q
where does the mylohyoid muscle originate & where does it insert into?
A
- originates at mylohyoid line on mandible
- inserts into body of hyoid & fibres of other mylohyoid
11
Q
what is the action of the mylohyoid?
A
- elevates the hyoid & floor of mouth
- reinforce floor of oral cavity
