LAB Neck And Submandibular I Flashcards
What does the cricothyroid membrane connect?
The cricoid cartilage and the thyroid cartilage
What does the thyrohyoid membrane connect?
The hyoid bone and the thyroid cartilage
Where does the platysma connect?
From the lower margin of the mandible to the thorax
What is the platysma innervates by?
The cervical branch of the facial nerve
What fascia is located below the platysma?
The investing layer of (deep) cervical fascia?
What does the investing layer of the deep cervical fascia enclose?
The sternocleidomastoid and the trapezius as it encircles the neck
What fascia encloses the thyroid gland?
The pretracheal or visceral fascia
What fascia encloses the strap muscles?
The infrahyoid fascia
What fascia encloses the deep muscles of the neck?
The prevertebral fascia
Also encircles the thyroid cartilage
What does the carotid sheath enclose?
The carotid artery
Internal jugular
Vagus nerve
What marks boarders of both the post and ant triangles?
The sternocleidomastoid
Where do the cutaneous sensory nerves of the neck originate from?
Cervical nerves 2-4
What muscle does the accessory nerve pass under?
Sternocleidomastoid which it also innervates
What four nerves are included in the cervical plexus?
Lesser occipital
Great auricular
Transverse cervical
Supraclavicular
What are the four strap muscles?
Sternohyoid (beneath omohyoid)
Omohyoid (most superficial)
Sternothyroid (beneath sternohyoid below thyroid cartilage)
Thyrohyoid (connects the thyroid cartilage and the hyoid bone)
What does the ANSA cervicalis do?
Plexus of motor nerves
Located on the carotid sheath
Innervates the strap muscles
From C1-3
What does the internal jugular vein join?
It joins the subclavian veins to form the brachiocephalic veins that join to form the superior vena cava
Which strap muscles is innervates by a branch that appears to come off of the hypoglossal nerve?
The thyrohyoid muscle
What nerve is located at the bifurcation of the common carotid artery?
Glossopharyngeal
With the carotid body that senses pressure and is a chemorecptor
What are the first two branches of the external carotid artery?
Superior laryngeal artery (pierces the thyrohyoid membrane)
Superior thyroid artery
What does the lingual artery supply?
The tongue
What is the superior laryngeal nerve (internal and external branches) a branch of?
The vagus nerve
At what level does the common carotid bifurcate?
Upper boarder of the thyroid cartilage
What nerve and artery penetrate the thyrohyoid membrane?
The superior laryngeal artery and nerve
