Other Flashcards
What are the actions of the platysma muscle?
Depress the corner of the mouth
Draw down the mandible
Name the condition that is caused by a shortened SCM on one side.
Torticollis
What is the action of SCM?
lateral flexion of the neck and tilting the chin to the contralateral side.
If both contract at the same time it will roll the mastoid process forward on the atlantoccipital joint and allows for flexion of the neck.
What is the origin of Trapezius?
external occipital protuberance, the superior nuchal line and the spinous processes of the thoracic vertebrae
What is the insertion of Trapezius?
It fans out to insert into the spine of the scapula. It also inserts into the lateral third of the clavicle.
What are the actions of trapezius?
Elevate the shoulders
rotate the scapula
What are the borders of the anterior triangle?
Inferior margin of the mandible
Anterior margin of SCM
Midline of the neck
What are the borders of the posterior triangle?
Posterior margin of SCM
Anterior margin of trapezius
Clavicle
What are the borders of the carotid triangle?
Omohyoid
SCM
Posterior belly of digastric muscle
Name the attachments of the digastric muscles
Hyoid bone
mastoid process
Mandible
What is contained within the superficial fascia of the neck?
Fat Platysma muscle cutaneous nerves lymph nodes superficial blood vessels
Name the contents of the pretrahceal fascia
Thyroid
oesophagus
trachea
The investing layer splits to encompass which muscles?
SCM
Trapezius
Name the contents of the prevertebral fasica
Vertebral column and associated muscles
Name the contents of the carotid sheath
Common Carotid artery
Internal jugular vein
Vagus nerve
Cervical lymph nodes
