Neck and Pharynx Flashcards
What structures run within the carotid sheath?
Internal jugular vein
Common carotid artery
Vagus nerve CN X
Name the posterior part of pre-tracheal fascia?
Buccopharyngeal fascia
Name the boundaries of the posterior triangle of the neck?
Posterior sternocleidomastoid
Middle 1/3 of clavicle
Anterior trapezius
Where does CN XI - accessory nerve exit the cranium?
Jugular foreman
What muscles does CN XI - accessory nerve supply motor innervation to?
Trapezius
Sternocleidomastoid
Between which muscles are the roots of the brachial plexus found?
Anterior scalenous
Middle scalenous
Which nerve travels obliquely over anterior scalenous?
Phrenic nerve
Name the boundaries that make up the anterior triangle of the neck?
Middle line
Anterior sternocleidomastoid
Mandible
Name the four supra-hyoid muscles?
Mylohyoid
Geniohyoid
Stylohyoid
Digastric - Anterior belly + Posterior belly
What is the nerve innervation of mylohyoid?
Posterior branch of V3
What is the nerve innervation of geniohyoid?
C1
What is the nerve innervation of stylohyoid?
CN VII - Facial
What is the nerve innervation of the anterior and posterior bellies of digastric?
Anterior belly (mandible) - V3 Posterior belly (mastoid) - CN VII - facial
Name the four infra-hyoid (strap) muscles?
Omohyoid
Sternohyoid
Sternothyroid
Thyrohyoid
Which of the four infra-hyoid muscles is not innervated by the Ansa cervicalis and what is its innervation?
Thyrhyoid
C1
The submandibular gland wraps around which muscle?
Mylohyoid
The submandibular duct loops around which nerve?
Lingual nerve - branch of posterior V3
Which vertebral level does the bifurcation of the common carotid artery occur?
C3
In relation to the common carotid, where is the internal jugular vein located?
Normally anterior and lateral to the CCA
What two muscles are supplied with motor innervation by C1?
Geniohyoid (suprahyoid muscle)
Thyrohyoid (infrahyoid muscle)
C1 hitches a lift on which nerve?
CN XII - Hypoglossus
Where does CN X - Vagus exit the cranium?
Jugular foreman
Describe how CN X - Vagus is sensory to the larynx?
Reccurant laryngeal branch is sensory to the infragotic cavity
External superior laryngeal branch is sensory to the supraglotic cavity and epiglottis
Describe the sensory distribution of CN IX - glossopharyngeal?
Posterior 1/3 of the tongue
Pharynx
Inner surface of the tympanic membrane
Which muscle receives motor innervation from CN IX - glossopharyngeal?
Stylopharyngeus
CN XII - Hypoglossus is motor to all the extrinsic muscles of the tongue except, and what is its innervation?
Palatoglossus - CN - X
Which three muscles elevate the pharynx, and what is their motor innervation?
Stylopharygeus - CN IX - glossopharygeal
Palatopharyngeus - CN X - vagus
Salpingopharyngeus - CN X - vagus
Which of the three constrictor muscles is attached to the pterygomandibular raphe?
Superior constrictor
