Anterior Triangle of the Neck Flashcards
What muscle divides the anterior and posterior triangles of the neck?
Sternocleidomastoid
What boundaries does the sternocleidomastoid muscle form on the anterior and posterior triangles?
- Forms the posterior boundary of the anterior triangle
- Forms the anterior boundary of the posterior triangle
What structures form the boundaries of the anterior triangle?
Anterior border = imaginary midline of the neck
Posterior border = anterior border of the sternocleidomastoid muscle
Base = the mandible
What are the four divisions of the anterior triangle?
- Submental
- Submandibular
- Carotid
- Muscular
What division of the anterior triangle lies underneath the chin?
Submental division
What does the submental division of the anterior triangle contain?
- Submental lymph nodes
- The beginning of the anterior jugular vein
What division of the anterior triangle lies inferior and posterior to the mandible?
Submandibular
What does the submandibular division of the anterior triangle contain?
- Submandibular salivary gland
- Lymph nodes
- Facial artery and vein
- Carotid sheath
- Hypoglossal nerve
What does the carotid division of the anterior triangle contain?
- Carotid sheath
- Branches of the external carotid artery
- Internal jugular vein
- Hypoglossal accessory nerve
- Vagus nerve
What does the muscular division of the anterior triangle contain?
- Sternohyoid and sternothyroid muscles
What muscles form the floor of the anterior triangle of the neck?
- Sternohyoid and sternothyoid
What fascia of the neck lies close to the skin?
Superficial cervical fascia
What are the four deep layers of the cervical fascia?
- Investing layer
- Pretracheal layer
- Prevertebral layer
- Alar fascia and carotid sheath
What sort of structures does the deep fascia of the neck surround?
The carotid arteries and muscles of the neck
Name the structure that forms a thin layer beneath the skin that covers the anterior and lateral surface of the neck?
Platysma
