Fascial layers of the neck Flashcards
what is the fascia?
a layer of fibrous tissue that surrounds muscles, vessels and nerves
what do the fascia layers in the neck act to do?
support and compartmentalise the structures present
where does the superficial cervical fascia lie?
between the dermis and deep cervical fascia
what does the superficial cervical fascia contain?
neurovascular supply to the skin superficial veins (e.g. external jugular vein) superficial lymph nodes fat platysma muscle
how is double chin created in obese individuals?
extra fat is deposited in the superficial fascia
where is the platysma muscle situated?
on anterior aspect of neck
origin of platysma?
has 2 heads (L + R)
originate from fascia of pectorlis major and deltoid
where do the 2 heads of the platsyma muscle meet?
fibres from the 2 heads cross the clavicle
meet in the midline, fusing with muscles of the face
what is the motor innervation to the platysma muscle via?
cervical branch of the facial nerve
what is the layers of the deep fascia? (superficial to deep)
investing
pre-tracheal
pre-vertebral
describe the investing layer (location)?
surrounds all the structures in the neck
where it meets the trapezius + SCM muscles, splits into 2, completely surrounding them
what are the attachments of the investing fascia?
thought of like a tube: has superior, anterior, inferior and posterior attachments
what is the superior attachment of the investing fascia?
attaches to the external occipital protuberance (back of skull) and superior nuchal line (line across external occipital protuberance
what is the anterior attachment of the investing fascia?
hyoid bone
what is the inferior attachment of the investing fascia?
attaches to the spine and acromion of the scapula, clavicle and manubrium of the sternum
what is the posterior attachment of the investing fascia?
along ligamentum nuchae (continuation of supraspinous ligament)