Anterior Cervical (Neck) Region

Platysma

depresses mandible

Platysma Origin

fascia of chest (over pectoral muscles + deltoid)

Platysma Insertion

lower margin of mandible, skin, and muscle at corner of mouth

Sternocleidomastoid

Flexes and laterally rotates the head

Sternocleidomastoid Origin

manubrium and clavicle

Sternocleidomastoid Insertion

mastoid process

Omohyoid

depresses hyoid

Omohyoid Origin

superior surface of scapula

Omohyoid Insertion

hyoid bone (O)

Sternohyoid

depresses larynx and hyoid bone

Sternohyoid Origin

manubrium + clavicle

Sternohyoid Insertion

hyoid bone (S)

Sternothyroid

depresses thyroid cartilage

Sternothyroid Origin

posterior surface of manubrium of sternum

Sternothyroid Insertion

thyroid cartilage (S)

Thyrohyoid

depresses hyoid

Thyrohyoid Origin

thyroid cartilage

Thyrohyoid Insertion

hyoid bone (T)

Vagus Nerve

Cranial Nerve X

Goes posteriorly compared to phrenic nerve (which is anterior)

Common Carotid Artery

Internal Jugular Vein

Esophagus

tube that connects the mouth to the stomach

Submandibular Glands

located on the floor of the mouth near the mandible

Thyroid Gland

endocrine gland that surrounds the trachea in the neck