Neck Anatomy Flashcards
The vertebral compartment of the neck contains what structures?
Cervical Vertebrae and Postural Muscles
The vascular compartment of the neck contains what structures?
Major blood vessels and the vagus nerve
The visceral compartment of the neck contains what structures?
Thyroid, parathyroid, pharynx, larynx, trachea and oesophagus
List the boundaries of the anterior triangle of the neck
Superiorly - inferior border of the mandible, Posteriorly - Anterior border of SCM, Anteriorly - midline of the neck from chin to the jugular notch
List the boundaries of the posterior triangle of the neck
Anteriorly - posterior border of SCM, Posteriorly - anterior border of the trapezius, Inferiorly - middle 1/3 of the clavicle
What are the attachments of the SCM?
Sternum, clavicle and mastoid bone
What are the actions of the trapezius muscle ?
rotate and retract scapula, extend the neck, elevate and depress the scapula
What are the boundaries of the submental triangle?
Inferior - hyoid bone, Medial - midline of the neck, Lateral - anterior belly of the digastric muscle
What are the boundaries of the digastric triangle?
Superiorly - body of the mandible, Anteriorly - anterior belly of the digastric muscle, Posteriorly - posterior belly of the digastric muscle
What artery lies within the digastric triangle?
Facial
What are the boundaries of the carotid triangle?
Superior - posterior belly of the digastric, lateral - medial border of the SCM, Inferior - superior belly of the omohyoid muscle
What are the boundaries of the muscular triangle?
Superiorly - hyoid bone, medially - midline of the neck, superolateral - superior belly of the omohyoid muscle, inferolateral - inferior portion of the SCM
The CCA is a branch of which arteries?
Brachiocephalic trunk (right side) and the Arch of Aorta (left side)
What lies within the carotid sheath?
The CCA, IJV and Vagus Nerve
What are the two terminal branches of the ECA given off in the face?
The maxillary and superficial temporal artery
What does the jugular venous sinus drain?
The brain
The IJV and subclavian merge to form what ?
The brachiocephalic vein
Which muscles are attached to the hyoid bone?
Suprahyoid, infrahyoid muscles, hyoglossus and genioglossus, middle pharyngeal constrictor
What muscles make up the suprahyoid muscles?
Mylohyoid, geniohyoid, digastric and stylohyoid
What nerve supplies they mylohyoid?
Inferior alveolar nerve
What nerve supplies the geniohyoid?
C1 within the hypoglossal nerve
The digastric muscle is innervated by which nerves?
The inferior alveolar and the facial nerve
The stylohyoid is innervated by which nerve?
Facial nerve
The infrahyoid muscle group is made up of what muscles?
Sternohyoid, sternothyroid, thyrohyoid and omohyoid muscles
The sternohyoid, sternothyroid and omohyoid is innervated by which nerves?
The anterior rami of C1-C3
The thyrohyoid is innervated by which nerve?
C1
What is the ansa cervicalis ?
Loop of nerves within the cervical plexus
