The Neck and Anterior Triangle Flashcards
What vertebral level is the hyoid bone?
C3 Vertebra
What vertebral level are the laryngeal cartilages located?
C4-C6 Vertebrae
What is the order of the cartilaginous structures inferior to the hyoid bone?
Thyroid Cartilage > Cricoid Cartilage > Trachea
What fascia in the neck is attached to vertebral spines?
Investing Fascia
What muscles are enclosed by the splitting of investing fascia?
Trapezius and Sternocleidomastoid (SCM)
What fascia envelops the vertebral column and deep neck muscles?
Prevertebral Fascia
Where is the buccopharyngeal fascia located?
Posterior portion of visceral fascia
What structures lie within the carotid sheath?
Internal Jugular vein, Common Carotid Artery/ Internal Carotid Artery, and Vagus Nerve
What space lies between the layers of buccopharyngeal and prevertebral fascia that can get infected?
Retropharyngeal Space
What structure divides the anterior and posterior triangles of the neck?
Sternocleidomastoid Muscle
What are the borders of the anterior triangle?
Midline of the neck, the lower border of the mandible, and the medial border of the SCM
The _________ belly of the _________ Muscle divides the anterior triangle into smaller triangles: the _________ triangle and the _________ triangle.
Superior, Omohyoid, Carotid, Muscular
What spinal cord segments do the cervical plexus originate?
C1-C4, ventral primary rami
The common area of nerves from C2 and C3 with C3 and C4 is called what?
The punctum nervosum/ nerve point of the neck/ Erb’s Point
What nerve innervates the platysma muscle?
Cranial Nerve 7: Facial Nerve
What two veins converge to give rise to the external jugular vein?
The posterior auricular vein and the retromandibular vein
What are the strap muscles?
sternohyoid, omohyoid, sternothyroid, and thyrohyoid muscles
Where does the omohyoid muscle attach?
Suprascapular Notch, the medial border
The sternohyoid, omohyoid, and the sternothyroid are innervated by what nerve?
Ansa Cervicalis of of the cervical plexus
What nerve innervates the thyrohyoid?
Nerve to the Thyrohyoid
The thyroid gland is located at what level of the trachea?
Level to the 2nd, 3rd, and 4th tracheal rings
What does the thyroid secrete?
Thyroxin: responsible for regulating cellular metabolism
What structure is located at the posterior surface of the superior and inferior poles of the lateral lobes of the thyroid?
Parathyroid Glands
What does the parathyroid gland secrete?
Parathyroid Hormone; critical for calcium homeostasis
