Neck 2 Flashcards
Submental triangle boundaries
Lateral: Anterior belly of digastric m.
Lateral: anterior belly of digastric m.
Inferior: hyoid bone
Floor: mylohyoid m.
Submental triangle contents
submental lymphatics
Muscular triangle boundaries
Superior: superior belly of omohyoid m.
Medial: midline of neck
Lateral: sternocleidomastoid m.
Muscular triangle contents
Infrahyoid muscles
Viscera of neck
Posterior triangle boundaries
Anterior: sternocleidomastoid m.
Posterior: trapezius m.
Inferior: clavicle
Roof: outer investing layer of deep cervical fascia
Floor: muscles, prevertebral fascia
Posterior triangle contents
Subclavian v. & a., transverse cervical artery, suprascapular a., CN XI, brachial plexus (trunks), cervical plexus, phrenic n.
occipital triangle boundaries
Anterior: sternocleidomastoid m.
Posterior: trapezius m.
Inferior: inferior belly omohyoid m.
Supraclavicular triangle Boundaries:
Anterior: sternocleidomastoid m.
Superior: inferior belly omohyoid m.
Inferior: clavicle
What are the Infrahyoid muscles
Sternohyoid muscle
Sternothyroid muscle
Thyrohyoid muscle
Omohyoid muscle
The spinal accessory nerve innervates the. Which triangle is it found in?
Sternocleidomastoid & trapezius
Posterior
What are the 4 sensory branches of the cervical plexus? Which ones are on top of the sternocleidomastoid?
lesser occipital nerve
greater auricular nerve
transverse cervical nerve
Supraclavicular nerve
1st 3 listed are on top
Remember LET’S GO TO SLEEP
where is the cervical plexus located?
deep to sternocleidomastoid & external jugular vein
Cervical plexus has VPR’s of
C1-C4
What is the great auricular nerve?
Gives sensory to part of the mandible, like the trigeminal nerve
What are the motor branches of the cervical plexus?
Muscular branches (geniohyoid thyrohyoid & sternohyoid sternothyroid omohyoid)
Ansa Cervicalis
phrenic nerve
REMEMBER MAP
Define torticollis
pharmacological, genetic, or pathological condition where the neck is artificially twisted
The recurrent laryngeal nerve in the lower neck provides ___ innervation to the ___
Provides motor & sensory innervation to the larynx
Where do the right & left recurrent laryngeal nerve arise from?
Right = in front of subclavian artery & goes along trachea posterior to common carotid artery
Left = from vagus to the left arch of the aorta
Label the fascia
What are the types of viscera in the muscular triangle?
Trachea & thyroid gland
What are the branches of the thyroid gland? What are the veins?
Superior thyroid artery & inferior thyroid artery
Superior, middle, & inferior thyroid vv.
Components of the anterior triangle
Submental
Submandibular
Carotid
Muscular
Components of the posterior triangle
Occipital & supraclavicular
Infrahyoid innervation
ansa cervicalis or C1 only
