Neck 1 Flashcards
what are these different sections of the neck?
- posterior triangle
- anterior triangle
- root
what can you find in the anterior triangle of the neck?
carotid pulse, jugular vein, ansa cervicalis, many hyoid muscles
what are some structures you can find in posterior triangle?
lymphatics, trapezius, jugular
what structures can you find in the root section of the neck?
jugular notch
Supraclavicular notch
Clavicle
______ lymph nodes are lymph nodes in front of ear
Preauricular
what are the 3 different neck zones?
Zone 1: most inferior (clavicle → cricoid cartilage)
Zone 2: cricoid cartilage → angle of mandible
Zone 3: angle of mandible → base of skull
________ is fibrous connective tissue enveloping muscles, neurovascular bundles, viscera
Fascia:
_______ are potential spaces between fascia/viscera that exist pathologically
Fascial spaces
________ are deep to/attached to skin and don’t enclose muscles
Superficial layers
_______ surround muscle, bones, nerves vessels
Deep layers
the ______ is the only bone does not articulate with any other bone! But articulates with CT
Hyoid
______ are muscles located above the hyoid
Suprahyoids
what are the suprahyoid muscles?
Stylohyoid, digastric (ant, post belly), mylohyoid
_______ are the muscles below hyoid
Infrahyoids
what are the infrahyoid muscles?
omohyoid, thyrohyoid, sternohyoid, sternothyroid
Sternocleidomastoid
Origin:
Insertion:
Innervation:
Action:
O: manubrium, medial clavicle
Insertion: Mastoid process, superior nuchal line
Inn: CN XI
A: flex neck, elevate sternum, inhalation, rotate neck
Stylohyoid
Origin:
Insertion:
Innervation:
O: styloid process
I: body of hyoid
Inn: CN VII
Anterior Digastric
Origin:
Insertion:
Innervation:
Action:
O: fossa of mandible
I: body of hyoid
In: CNV3
A: depresses mandible, elevates hyoid
** part of digastric that is under jaw**
Posterior Digastric
Origin:
Insertion:
Innervation:
O: temporal bone
I: body of hyoid
In: CN VII
A: depresses mandible, elevates hyoid
** part of digastric that is behind mandible **
Mylohyoid
Origin:
Insertion:
Innervation:
O: mylohyoid line of mandible
I: body of hyoid
In: CN V3
Geniohyoid
Origin:
Insertion:
Innervation:
O: genial tubercles of mandible
I: body of hyoid
In: C1 via CN XII
Omohyoid
Origin:
Insertion:
Innervation:
O: scapula
I: hyoid
In: Ansa cervicalis
Thyrohyoid
Origin:
Insertion:
Innervation:
O: thyroid cartilage
I: hyoid
In: C1 via CN XII
Sternohyoid
Origin:
Insertion:
Innervation:
O: sternum
I: hyoid
In: ansa cervicalis
Sternothyroid
Origin:
Insertion:
Innervation:
O: sternum
I: thyroid cartilage
In: ansa cervicalis
what smaller triangles can the anterior cervical triangle be broken into?
Carotid triangle
Submental triangle
Submandibular triangle
what muscles make up the carotid triangle?
Sternocleidomastoid
Omohyoid (sup. belly)
Digastric (post. belly)
what is the carotid sheath made up of?
common carotid artery, internal jugular vein, vagus nerve
The common carotid artery is always ______ while the jugular vein is always _____
medial, lateral
what is the common carotid artery made up of? does it bifurcate?
- carotid body + carotid sinus
-yes, it bifurcates into internal and external carotid artery
what cranial nerve runs along the carotid artery?
IX (glossopharyngeal)
The carotid body has _______receptors and detects _____
chcemreceptors, partial pressure of O2, CO2, pH, rwmp
carotid sinus has ____receptors that measure
baroreceptors, BP
submandibular triangle consists of what things?
Submandibular gland
Facial v. and a.
Lymphatics
CN XII, nerve to mylohyoid, C1 via CXII
The ______ is the hollow muscular organ forming an air passage to the lungs and holding the vocal cords in humans and other mammals; the voice box.
larynx
what is the larynx surrounded by?
Superior thyroid a, external carotid a., common carotid a
_____________ is a neural loop in the neck formed from C1, C2, C3
ansa cervicalis
The ansa cervicalis lays on and supplies motor innervation to what three muscles?
Sternothyroid
Sternohyoid
Omohyoid
