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Posterior and Anterior Cervical Triangle of the Neck
Gross Anatomy
70
Medical
Professional
03/21/2011

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Cards

Term
what are the structures contained in the carotid sheath?
Definition
carotid artery
internal jugular vein
vagus nerve
Term
the platysma passes superficial to the clvavicale and attaches where?
Definition
superficial fascia of the deltoid and pec region.
Term
what is the innervation of the platysma?
Definition
facial nerve
Term
where does the external jugular vein begin?
Definition
posterior to the angle of the MANDIBLE and across the STERNOCLEIDOMASTOID muscle
Term
Does the external jugular vein pierce the deep cervical fascia?
Definition
yes
Term
external jugular vein drains into?
Definition
subclavian vein
Term
the skin of the neck is innervated by cutaneous nerves of what?
Definition
cervical plexus
Term
what innervates the scalp?
Definition
lesser occipital nerve
Term
what is the pathway of the lesser occipital nerve?
Definition
pass along the posterior border of sternocleidomastoid muscle.
Term
what does the great auricular nerve innervate?
Definition
lower part of the ear and skin from angle of mandible to the mastoid process.
Term
what innervates the anterior triangle of the neck?
Definition
transverse cervical nerve
Term
what is the pathway for the supraclavicular nerves?`
Definition
they pass inferiorly to the region of the shoulder.
Term
the accessory nerve lies deep where?
Definition
investing layer of the deep cervical fascia
Term
these spinal nerves join the accessory nerve
Definition
C3-4
Term
how is the accessory nerve found?
Definition
posterior part of sternocleidomastoid muscle to anterior border of trapezius
Term
what does the accessory nerve innervate?
Definition
sternocleidomastoid muscle and trapezius muscle
Term
why is diaphragmatic pain referred to the shoulder?
Definition
supraclavicular and phrenic nerves both arise from c3-4. So pain is carried to shoulder region.
Term
where is the hyoid bone found?
Definition
angle b/t floor of mouth and superior end of neck.
Term
where is the thyrohyoid membrane?
Definition
stretches b/t thryoid cartilage and hyoid bone
Term
how is the external jugular vein formed?
Definition
by the joining of the retromandibular and posterior auricular vein
Term
what is the pathway of the anterior jugular vein?
Definition
passes deep to sternocleidomastoid muscle.
Term
the anter. jug. vein joins what other vein in the root of the neck
Definition
external jugular vein
Term
what are the contents of the muscular triangle?
Definition
sternohyoid, sternothyroid, thyrohyoid, and superior belly of omohyoid
Term
this muscle depresses the hyoid bone.
Definition
sternohyoid and omohyoid
Term
what is the action of the sternothyroid
Definition
depression of the larynx
Term
thyrohyoid muscle action
Definition
elevation of larynx
Term
where is a tracheotomy made?
Definition
midline between infrahyoid muscles of neck
Term
what are the contents of the carotid triangle?
Definition
carotid arteries
branches of ext. carotid artery
hypoglossal nerve
vagus
Term
this nerve passes through the jugular foramen
Definition
accessory nerve
Term
the facial vein empties into
Definition
internal jugular vein
Term
where can the hypoglossal nerve be found?
Definition
superior to the tip of the greater horn of the hyoid bone.
Term
what is the origin of the nerve to the thyrohyoid muscle
Definition
hypoglossal nerve axons of C1
Term
the hypoglossal nerver passes medial to what struc
Definition
posterior belly of digastric muscle
Term
where is the loop of the ansa cervicalis?
Definition
around the carotid sheath
Term
what does the internal branch of the superior laryngeal nerve supply
Definition
mucosa of the larynx with sensory fibers
Term
what innervates the cricothyroid muscle
Definition
external branch of superior laryngeal nerve
Term
this nerve innervates part of the inferior pharyngeal constrictor muscle
Definition
external branch of sup. laryngeal nerve
Term
what are the contents of the carotid sheath?
Definition
common carotid a
internal carotid a
internal jugular v
vagus n
Term
where is the internal jugular vein in respect to the common carotid or internal carotid a?
Definition
LATERAL
Term
where is the origin of the external carotid artery
Definition
level of the superior horn of the thryoid cartilage.
Term
what are the six branches off the external carotid artery?
Definition
ascending pharyngeal artery
superior thyroid artery
lingual artery
facial artery
occipital artery
posterior auricular artery
Term
where can the ascending pharyngeal artery be found?
Definition
from the medial surface near the CAROTID bifurcation
Term
what is the branch off the superior thyroid artery
Definition
superior laryngeal a.
Term
where does the lingual artery arise?
Definition
at the level of the greater horn of the hyoid bone. passing deeply into the tongue
Term
the facial artery arises superior to what artery? where does it course?
Definition
lingual artery. deep to the submandibular gland
Term
the occipital artery arises from which surface?
Definition
posterior surface. supplies scalp
Term
what is the carotid sinus innervated by
Definition
glossopharyngeal nerve 9
Term
what does the carotid sinus detect
Definition
blood pressure
Term
this monitors changes in oxygen and carbon dioxide concentration of the blood.
Definition
carotid body. also innervated by CN 9
Term
where is the vagus nerve located?
Definition
posterior the vessels in the carotid sheath. also MEDIAL to the INTERNAL JUGULAR VEIN
Term
what are the contents of the submandibular triangle
Definition
facial a. and v.
stylohyoid m.
hypoglossal n.
mylohyoid m.
ant. belly of digastric m.
Term
what is the innervation of the ant. digastric muscl
Definition
mylohyoid n. (branch of V3-trigeminal)
Term
what is the innervation of the post. digastric
Definition
facial nerve (cn 7)
Term
what is the actions of the digastric muscles
Definition
elevation of the hyoid bone and depression of the mandible
Term
what innervates the stylohyoid muscle
Definition
facial nerve. it ELEVATES the hyoid bone
Term
What is the relationship of the facial a. and v. and the submandibular gland?
Definition
facial v. superficial.
facial a. deep to submandibular gland
Term
the infrahyoid muscles are innervated by?
Definition
cervical plexus innervated: ansa cervicalis
Term
What fascia is the sympathetic trunk located?
Definition
prevertebral fascia
Term
this artery supplies the brain. internal carotid a. or external?
Definition
internal carotid a.
Term
relationship b/t hypoglossal n and occipital a.
Definition
hypoglossal n. crosses over.
Term
Where does the superior ramus of the ansa cervicalis come off?
Definition
anterior the internal carotid a.
Term
Where can the superior cardiac branch of vagus n. arise?
Definition
superiorly. passing behind the carotid sheath
Term
This cranial nerve can be found near the greater thyroid bone?
Definition
hypoglossal n.
Term
the ext. jugular v branches into?
Definition
suprascapular and transverse cervical v.
Term
Name the nerves in the posterior cervical triangle
Definition
Lesser occipital
greater auricular
transverse cervical
supraclavicular n.
accessory n. (MOTOR)
Term
Which artery is at risk in the post. cerv.
Definition
subclavian a. and v.
Term
These vessels are located in the carotid triangle
Definition
carotid arteries
br. of exter carotid a.
Term
Nerves at risk in carotid triangle
Definition
hypoglossal n.
vagus n.
Term
CN located in submandibular triangle
Definition
hypoglossal n
Term
vessels in submandibular triangle
Definition
facial a. and v.
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