Anterior Triangle of the Neck Flashcards Preview

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Flashcards in Anterior Triangle of the Neck Deck (12)
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1
Q

Boundaries

A
Ant = median line of the neck
Post = anterior border of SCM
Sup = inferior border of mandible
Apex = jugular notch of sternum
Roof = subcutaneous tissue covering platysma 
Floor = pharynx, larynx, thyroid gland
2
Q

Subdivisions

A

Submental triangle
Submandibular triangle
Carotid triangle
Muscular triangle

3
Q

Suprahyoid Muscles and innervations

A

Mylohyoid - V3
Geniohyoid - C1
Stylohyoid - VII
Digastric - Ant belly V3, Post belly VII

4
Q

Infrahyoid Muscles and Innervations

A

Sternohyoid, Sternothyroid, Omohyoid - Ansa

Thyrohyoid - C1

5
Q

Which gland is in this triangle?

A

Submandibular gland

6
Q

Veins/Vessels

A

Common Carotid
Internal Carotid (no branches in neck)
External Carotid
Internal Jugular Vein

7
Q

Common Carotid

A
Upper border f the thyroid cartilage bifurcates into external and internal carotid arteries 
Carotid sinus (baroreceptor) and body (chemoreceptor)
8
Q

Internal Carotid

A

No branches in the neck

9
Q

External Carotid

A
Eight branches
Superior Thyroid
Ascending pharyngeal
Lingual
Facial
Occipital
Posterior Auricular
Maxillary
Superficial Temporal
10
Q

Nerves

A

Vagus Nerve (CN X) - leaves skull with CN IX and XI
Cervical Plexus
Sympathetic Trunks (Inf, middle, sup ganglia)
Glossopharyngeal to stylopharngeus
Accessory to Trap and SCM
Hypoglossal to muscles of tongue

11
Q

Cervical Plexus

A

Ventral Rami of C1-C4
Sensory branches - Lesser occipital, greater auricular, transverse cervical, supraclavicularis
Motor branches - C1 to geniohyoid and thyrohyoid, C2, C3, Ansa Cervicalis, Phrenic nerve - C3,4,5 - diaphragm

12
Q

Glands…

A

Thyroid gland
Parathyroid gland
Larynx and trachea
Esophagus