Lecture 2 - Fascial Layers, Deep Neck Spaces And Cross Section Anatomy Flashcards
Describe where the hyoid bone is
At level of C3 directly under chin
Where is the thyroid cartilage and the cricoid cartilage?
Under hyoid bone (adams apple)
Then the cricoid is like 1 cm under the thyroid cartilage
What is it called when the thyroid gland is enlarged and palpable?
Goitre
What nerve innervates platysma?
Facial nerve (cervical branch)
What is the origin and insertion of Sternocleidomastoid?
Origin = clavicle and sternum
Inserts = mastoid process (bony part behind ear)
What is the action of Sternocleidomastoid?
Rotates head so chin can turn to opposite side
What nerve innervates Sternocleidomastoid?
Accessory nerve
How can you test the strength of the right Sternocleidomastoid muscle?
Put hand on persons LHS of their face and push across to their right and they try and resist
What is the condition called where there is involuntary contraction of Sternocleidomastoid causing an asymmetrical neck position?
Torticollis
What is Torticollis?
Involuntary contraction of SCM
What nerve innervates trapezius?
Accessory nerve
What is the origin of trapezius?
Occipital bone and nuchal ligament
What can lead to trapezius muscle wastage?
Accessory nerve injury
What are the 3 borders of the anterior triangle?
Mid Sagittal line of neck
Inferior margin of mandible = superior margin
Anterior border of SCM = lateral border
What other part of the body is th anterior triangle of the neck connected to?
Thorax
What are the borders of the posterior triangle of the neck?
Posterior border of SCM
Anterior border of trapezius
Clavicle
Scalene muscles = floor