Fascias of the neck Flashcards
What are the 4 fascias of the neck
superficial cervical fascia
deep cervical fascia
pharyngobasilar fascia
buccopharyngeal fascia
Where is the superficial cervical fascia?
between dermis and deep fascia
What muscle is contained within the superficial cervical fascia?
platysma
attachment: lower border of mandible –> superficial fascia of skin of the neck overlying the clavicle
function: wrinkles the anterior nuccal skin
innervation: facial n. (cervical branch)
blood supply: facial, submental, suprascapular a.
What are the 4 parts of the deep cervical fascia?
superficial (investing) layer (lamina)
carotid sheath
prevertebral fascia
pretracheal (fisceral) fascia (lamina)
Where does the superficial (investing) layer (lamina) extend?
mastoid and mandible –> clavicle and acromion
ligamentum nuchae and spinous processes –> midline
What muscles and gland are surrounded by the superficial (investing) layer (lamina)?
trapezius
sternocleidomastoid
attachment: lateral aspect of mastoid process and superior nuchal line –> manubrium and medial 1/3rd of clavicle
function: flexion of head and neck, contralateral rotation of head
innervation: accessory n.
blood supply: occipital, posteiror auricular, superior thyroid and suprascapular a.
inferior portion of parotid gland
What fascia is the superficial (investing) layer (lamina) continuous with?
parotid fascia
What vessels and nerves are surrounded by the carotid sheath?
common carotid a., internal carotid a., internal jugular v., vagus n.
Where does the prevertebral fascia extend?
lateral and anterior to levator scapulae, longus colli and capitis, and scalene muscles
base of skull –> mediastinum
What does the prevertebral fascia form the floor of?
posterior triangle
What is the prevertebral fascia continuos with?
axillary sheath
anterior longitudinal ligament
The prevertebral fascia defines the posterior boundary of the ___________
retropharyngeal space
The pharyngobasilar fascia forms the internal epimysium of what muscle?
constrictor muscles (all have in common):
attachment: _____ –> median pharyngeal raphe
function: swallowing
innervation: pharyngeal plexus (X)
blood supply: ascending pharyngeal a.
inferior constrictor
attachment: cricoid and thyroid cartilages –>
innervation: recurrent laryngeal n., external laryngeal n.
blood supply: inferior thyroid a.
middle constrictor
attachment: greater and lesser cornu of hyoid and stylohyoid ligament –>
blood supply: tonsilar a.
superior constrictor
attachment: pterygoid hamulus and pterygomandibular raphe –>
blood supply: tonsilar a.
Where does the pharyngobasilar fascia extend?
base of skull (pharyngeal tubercle) –> pterygomandibular raphe and pharyngeal raphe
The buccopharyngeal fascia forms the external epimysium of what muscle?
constrictor muscles (all have in common):
attachment: _____ –> median pharyngeal raphe
function: swallowing
innervation: pharyngeal plexus (X)
blood supply: ascending pharyngeal a.
inferior constrictor
attachment: cricoid and thyroid cartilages –>
innervation: recurrent laryngeal n., external laryngeal n.
blood supply: inferior thyroid a.
middle constrictor
attachment: greater and lesser cornu of hyoid and stylohyoid ligament –>
blood supply: tonsilar a.
superior constrictor
attachment: pterygoid hamulus and pterygomandibular raphe –>
blood supply: tonsilar a.
