Movement Flashcards
Which two muscles of the neck have 2 bellies (anterior and posterior)?
Suprahyoid - digastric
Infrahyoid - omohyoid
Which suprahyoid muscle runs medially down?
Geniohyoid
What is the nerve supply to the infrahyoid muscles?
Ansa cervicalis
Which cranial nerves run in the anterior triangle of the neck?
7, 9, 10, 11, 12
Which cranial nerve runs in the posterior triangle of the neck?
11 - accessory
What blood vessels run in the anterior triangle of the neck?
Common carotid artery
Internal jugular vein
Which trunk in the brachial plexus may be affected by a stab wound to the posterior neck (posterior triangle)?
Upper trunk
What are the boundaries of the anterior triangle?
Superior - mandible
Medial - imaginary line down midline of body to sternal notch
Lateral - medial part of SCM
What are the boundaries of the posterior triangle?
Inferior - middle 1/3 of clavicle
Anterior - posterior part of SCM
Posterior - trapezius
Function of the digastric muscle?
Depression of the mandible
Which cranial nerve crosses the common carotid as it bifurcates into internal/external carotid arteries?
Hint - it runs alongside the lingual artery
Hypoglossal
Which 3 neurovasculature components are contained within the carotid sheath?
Common carotid artery
Vagus nerve
Internal jugular vein
Which cranial nerves are involved in the voluntary stage of swallowing?
9 - glossopharyngeal
10 - vagus
Which cranial nerves are involved in the in-voluntary stage of swallowing?
9 - glossopharyngeal
10 - vagus
11 - accessory
All of the laryngeal muscles are innervated by the recurrent laryngeal branch of the vagus nerve except which muscle?
What nerve branch innervates this muscle?
Cricothyroid
External branch of the superior laryngeal nerve from the vagus nerve