Facial artery Tortuous for maximal mandibular depression ____ point Cervical branches: ____ Tonsilar Glandular ____ Muscular Branches ____ Lateral nasal ____

``` pulse ascending palatine submental angular superior & inferior labial ```

Lab 4 Flashcards by J L

Sternocleidomastoid
• Divides anterolateral neck into ____ & ____ cervical triangles
• Innervation: CN ____
• Foramen magnum → ____ foramen
• Destructive lesion XI = ____ paresis in rotating against resistance
• Vasculature: ____ → ____ artery

posterior
anterior
XI
jugular
contralateral
ECA
occipital

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Sternohyoid
• ____
• Innervation: ____

infrahyoid

ansa cervicalis

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Omohyoid (superior belly)
• ____
• Innervation: ____

infrahyoid

ansa cervicalis

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Sternothyroid
• ____
• Innervation: ____

infrahyoid

ansa cervicalis

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Thyrohyoid
• ____
• Innervation: ____ (running with ____)

infrahyoid
C1
XII

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Submandibular gland
• Innervation: ____ → (submandibular ganglion) → (ride) ____ lingual

• Vasculature: ECA → ____ → ____

VII GVE
V3
facial
glandular

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Facial artery

Tortuous for maximal mandibular depression
____ point
Cervical branches:
____
Tonsilar
Glandular
____
Muscular Branches
____
Lateral nasal
____

pulse
ascending palatine
submental
angular
superior &amp; inferior labial

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Submandibular triangle: ____/____/____

mandible
anterior digastric
posterior digastric

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Posterior belly of Digastric
• \_\_\_\_
• Action: \_\_\_\_, \_\_\_\_ of mandible 
• Innervation: \_\_\_\_
• Vasculature: ECA → \_\_\_\_

suprahyoid
depression
retrusion
VII
occipital

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SUBMENTAL TRIANGLE

BOUNDARIES

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Anterior belly of Digastric
• \_\_\_\_
• Action: \_\_\_\_, \_\_\_\_ of mandible
• Innervation: \_\_\_\_
• Vasculature: ECA → \_\_\_\_

suprahyoid
depression
retrusion
V3
occipital

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Tendon of the digastric (passes through ____ and ____

stylohyoid

fascial sling

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Stylohyoid
• ____
• Innervation: CN ____
• Vasculature: ECA → ____

suprahyoid
VII
occipital

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CN XII (hypoglossal)

____ fibers for all intrinsic and most extrinsic (not ____) tongue muscles
Lateral surface of ____, passing over ____
Inferior to ____ artery (hyoglossus separates)
Divisions
____
Styloglossus
____
Intrinsic tongue muscles

GSE
palatoglossus
hyoglossus
mylohyoid
lingual

hyoglossus
genioglossus

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Hyoglossus muscle
• Greater horn of hyoid → lateral side of tongue
• Innervation: CN ____

XII

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Mylohyoid

Mylohyoid line → corpus of ____
Mylohyoid raphe = thin muscular diaphragm
Action: ____ floor of mouth/tongue
Innervation: CN ____
Vasculature: ECA → ____ (mandibular portion) → ____

mandible
raise
V3
maxillary
inferior alveolar

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Thyroid gland connected by isthmus

Pathology: ____ paralysis of laryngeal musculature (____ voice) from cutting recurrent laryngeal nerve
Vasculature:
subclavian → ____ trunk → ____
ECA → ____ → ____

ipsilateral
raspy
thyrocervical
inferior thyroid
superior thyroid
glandular

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Carotid Triangle: ____/____/____

SCM
posterior digastric
superior omohyoid

Carotid Sheath: ____, ____, ____

CCA
IJV
CN X

Ansa cervicalis
• Cervical loop laying on carotid sheath
• \_\_\_\_ = superior root (From C1)
• \_\_\_\_ = C2, C3
• Carotid endarterectomy can cause mweakening of \_\_\_\_

descendens hypoglossi
inferior root
infrahyoids

Descendens Hypoglossi
• ____ root of Ansa Cervicalis
• Coming from ____ Nerve

superior

hypoglossal

Common Carotid Artery

Aortic Arch → ____ Trunk → R ____ + R ____
Bifurcates at thyrohyoid interval ____
L ____ directly off Aortic Arch

brachiocephalic
CCA
subclavian
C3/C4
CCA

Carotid Sinus &amp; Carotid Body 
• Sinus: baroreceptors – monitor \_\_\_\_
• Body: chemoreceptors – monitor \_\_\_\_ 
• afferent CN \_\_\_\_ to medulla
• (Will induce CN \_\_\_\_ efferent)

bp
O2/CO2
IX
X

ICA / ECA bifurcation
• At \_\_\_\_ interval
• Superir border of thyroid cartilage
• \_\_\_\_
• ICA: \_\_\_\_, petrous, \_\_\_\_, cerebral)
• ECA: \_\_\_\_

thyrocervical
C3/C4
cervical
cavernous
SALFOPMS

Superior thyroid artery • From ____ * ____ * Superior laryngeal * ____ * Glandular (thyroid) * ____

ECA infrahyoid cricothyroid SCM

Inferior thyroid artery • ____ → ____ trunk → inferior thyroid

subclavian | thyrocervical

Superior laryngeal artery * ____ → ____ → superior laryngeal * Upper ____ * Pierces through ____ membrane

ECA superior thyroid larynx thyrohyoid

ECA Branches: ascending pharyngeal, lingual, facial, occipital, posterior auricular * ____ * Ascending Pharyngeal * ____ * Facial * ____ * Posterior Auricular * ____

superior thyroid lingual occipital

Ascending pharyngeal artery * ____ ECA branch * To pharyngeal ____ + ____ * Prevertebral → ____ & longus coli * Inferior tympani → ____ * Neuromeningeal → ____ * ____

smallest constrictors stylopharyngeus longus capitus middle ear PCF palatine

Lingual artery Medial to ____ nerve Tortuous for mobility Arises at tip of greater horn of hyoid - ____ - Sublingual - ____

hypoglossal dorsal lingual deep lingual

Common Facial Vein (→____) | • Retromandibular (Anterior division) joins facial

IJV

Occipital artery * Muscular → ____, styloyoid, ____ * ____ * Auricular → ____ * Meningeal * Terminal → ____

``` digastric posterior cervical SCM mastoid air cells scalp ```

Posterior auricular artery * Auricularis → ____ * Occipital → ____ * Stylomastoid → ____ (→ fetal stapedial) * Bells Palsy: vasospasm of ____ artery (shares canal with ____)

``` deep external ear scalp posterior tympanic stylomastoid VII ```

Lingual & superior thyroid veins • Drains ____ floor • To ____

tongue/oral | IJV

Internal branch of superior laryngeal * ____ * Mucosa in ____, piriform recess, supraglottic larynx * ____ LIMB OF COUGH * Mediates some ____

GSA valleculae afferent choking

External branch of superior laryngeal * ____ * ____ * Inferior ____

SVE cricothyroid pharyngeal constrictor

Pharyngeal Branch of Vagus - Joins ____ to form pharyngeal plexus - Unilateral Vagal Lesion → - ____ = dysphagia (trouble swallowing) - LVP ____ paralysis - Nasal speech & nasal ____ - → pharyngeal/palatal muscle - EXCEPT: - ____ (IX) - ____ (V3)

IX abnormal gag ipsilateral reflux stylopharyngeus TVP

Brachiocephalic artery * Trunk off ____ * Branches into R ____ + R ____

aortic arch subclavian common carotid

Inferior thyroid vein | Drains into ____

left brachiocephalic vein

Superior vena cava * Caval System * To right ____ * Drains head/neck/____ limbs

atrium | upper

Aortic arch: brachiocephalic, L ____, L ____

CCA | subclavian

Superior Thoracic Aperture: L/R ____, L/R ____, ____/bifurcation, ____

vagus recurrent laryngeal trachea esophagus

Recurrent laryngeal (inferior) - ____: infraglottic larynx mucosa - ____: intrinsic laryngeal m (except ____) - Vulnerable to ____ pathology/excision - ____ paralysis of most laryngeal m (____ voice)

``` GSA SVE cricothyroid thyroid ipsilateral rough/raspy ```