10-14 Anterior NECK Flashcards
list the VERTEBRAL levels of each of these Neck Bones
1. Mandible
- Hyoid bone
- Thyroid Cartilage Notch
- Cricoid Cartilage
- Jugular Notch Manubrium
- Mandible = lower border of C2 Vertebrae
- Hyoid bone= C3
- Thyroid Cartilage= NOTCH is at C4
- Cricoid Cartilage= C6
- Jugular NOTCH Manubrium= T1
Boundaries of the ANTERIOR Triangle [3]
- ANT border of Sternomastoid
- lower border of mandible
- neck midline
Boundaries of the Carotid Triangle [3]
- How are Carotid arteries actually related to this triangle?
ºANT border of Sternomastoid
ºOmohyoid
ºPOSTERIOR BELLY Digastric muscle
- This is where most the External Carotid Arteries come out from
Boundaries of SubMandibular Triangle [3]
- POST BELLY Digastric
- ANT BELLY Digastric
- lower border of mandible
The Pretracheal fascia and Buccopharyngeal visceral fascia are BOTH laterally continuous with the ____ _____. What is the difference between these 2 fascia?
Pretracheal and Buccopharyngeal fascia are BOTH LATERALLY CONTINUOUS WITH CAROTID SHEATH.
Pretracheal=covers Trachea, Larynx and Esophagus
——————————————–
Buccopharyngeal visceral = fascia BEHIND the Pretracheal muscles that connects the 2 Pretracheal lobes
- Retropharyngeal space
2. What is it’s clinical relevance?
- Space between buccopharyngeal and prevertebral Fascia that extends from skull base to Thorax POST mediastinum
- Tracks DIRECTLY to the Thorax = route for possible infection
LIST NERVE innervations for these muscles:
1. Sternocleidomastoid
- Geniohyoid
- STYLOhyoid
- Mylohyoid
- Cricothyroid
- GenioGLossus
- HYOGLossus
- Strnocldmastoid= Spinal Accessory CN11 (C2)
- Geniohyoid= C1 spinal n. branch
- STYLOhyoid = Facial CN7
- Mylohyoid= [Trigeminal/CN5-B3] {3rd branch}
- Cricothyroid= VAGUS n. CN. X
- Genioglossus = HypoGLossal CN12
- HYOglossus= HypoGLossal CN12
What is the nerve innervation for:
A: ANT BELLY Digastric muscle
B: POST BELLY Digastric muscle
DiGastric muscle
A: ANT BELLY= [[ TriGeminal/CN5- B3 ]]
{Branch #3 of Cranial n. 5}
B: POST BELLY= Facial CN7
- TOSS” b4 u STRAP*
1. What are the Infrahyoid STRAP muscles? [4]
2. What is the Nerve for the “..OSS” of Infrahyoid STRAP muscles?
3. What is “T” innervated by?
- “TOSS” b4 u STRAP
- Thyrohoid (continuation of the SternoThyroid)
- Omohyoid
- SternoThyroid
- Sternohyoid
- ——————————————————————
2. [ansa cervicales (C1-C3)] –> “..OSS”
- ——————————————————————–
- Thyrohyoid = innervated by [C1 spinal n. branch]!<— caught a ride w/Hypoglossal n.
What are the NAMES and ORDER of the 5 [Facial CN7 n.] branches?
“That Zombie Bit My Cat!”
- Temporal
- Zygomatic
- Buccal
- Mandibular
- Cervical
ALL Scalene and Prevertebral muscles are innervated by which nerves?
Cervical nerves (Ventral Rami)
What are the 4 Prevertebral muscles?
Rectus capitis anterioris / lateralis
&
Longus Capitis and Longus Colli
The Splenius capitis and other Back muscles are innervated by which nerves?
Cervical nerves (DORSAL Rami)
What is the Stylomastoid Foramen?
hole between mastoid and styloid process that [Facial CN7] transmits thru!
“genio…” = _____
Genioglossus muscle [innervated by ____]
OR
Geniohyoid muscle [innervated by ______]
“genio….” = chin
ex. GenioGLossus muscle [innervated by HypoGLossal CN12]
OR
Geniohyoid [innervated by C1 spinal n. branch ]
- What 2 muscles does the Facial CN7 innervate?
2. What 2 muscles does the [Trigeminal/CN5-B3] innervate?
- Facial CN7 = STYLOhyoid & POST BELLY Digastric
- ————————————————————————————- - [Trigeminal/CN5-B3]= Mylohyoid & ANT BELLY Digastric
A: Nerve innervation for [Stylopharyngeus m.]
B: innervation for the 2 Larynx intrinsic muscles? What are these 2 Larynx intrinsic muscles?
C: What 3 muscles does the HypoGLossal CN12 innervate?
A: Glossopharyngeal CN9
B: Superior laryngeal&Recurrent laryngeal= Vagus n. CN.X
C: GenioGLossus/ HyoGLossus / StyloGLossus
Structures in the inferior neck are perfused by _____artery while Structures in the SUPERIOR NECK are perfused by the ________ ________
inf.Neck structures perfused by subclavian artery while SUPERIOR NECK Structures perfused by EXTERNAL CAROTID ARTERY
Where is the Sympathetic trunk & ganglia located?
In Front of the PreVertebral fascia but BEHIND CaROTID SHEATH
A) Name the 8 branches of EXTERNAL CAROTID ARTERY in order, along with their own branches?
B) What part of the neck does this Big artery perfuse?
” EXT CAROTID ARTERY branches are SALFORMS “
1: Superior thyroid –>[infrahyoid/Superior laryngeal]
2: Ascending Pharyngeal
3: Lingual –> [ suprahyoid]
4: Facial –>[submental a.] & very squiggly en vivo
5: Occipital
6: POST au(R)icular
7: Maxillary [many branches]
8: superficial temporal –>[transverse facial]
B) SUPERIOR NECK
The Maxillary Artery is a daughter branch of the ___ ___ artery and is ___[HUGE/small] in size. It is located in the _____ fossa.
Maxillary Artery is a daughter of the EXTERNAL CAROTID ARTERY and is HUGE in size. It’s located in the INFRATEMPORAL fossa.
Which nerve travels with the External Jugular Vein?
Great AuRicular Nerve
Which muscle under the chin PIERCES the Stylohyoid muscle?
[POSTERIOR BELLY Digastric] Pierces Stylohyoid muscle under chin!
What is the FUNCTION of the [Mylohyoid] and what NERVE innervates it?
under chin carriage muscle that both keeps tongue from falling out and depresses mandible
n. = [Trigeminal/CN5-B3]
1) The upper part of the Vagus n. creates a ______ n. daughter, which itself then gives way to an _____ and _________ .
2) How is the[recurrent laryngeal n.] related to the Vagus n.?
1) Upper part of Vagus n. creates [Superior Laryngeal n.] daughter, which itself gives way to an EXTernal laryngeal branch and an INternal laryngeal branch
2) Vagus n. has 2nd daughter [recurrent laryngeal n.] that on L=wraps behind aorta & R=goes underneath subclavian a. —>Both innervate Voice Box
1-Describe the difference between EXTernal laryngeal branch and INternal laryngeal branch of the [Superior Laryngeal n.]
2-Wht parent n. does [Superior Laryngeal n.] come from?
A-EXT branch= smaller and innervates Cricothyroid muscle
B-INternal branch= PIERCES Thyrohyoid membrane and innervates Larynx muscle
2) Both branches <——VAGUS n.
