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59 Cards in this Set
- Front
- Back
where is the only complete ring in the trachea? |
cricoid cartilage
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what level is the hyoid bone at?
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c3
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what level is the thyroid cartilage at?
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c4 |
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what level is the cricoid cartilage at?
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c6
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what is the laryngeal prominence formed by?
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by the thyroid cartilage (of larynx), from 2 plates (laminae)
adam's apple |
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platysma
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origin: fascia and skin over deltoid and pec major |
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SCM
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origin: a. sternal head: anterior surface of manubrium |
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congenital torticollis
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wryneck. contraction of SCM from fibrosis, gets shorter. can be torn during birth |
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what is the course of the external jugular vein?
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crosses SCM in the superficial fascia, pierces fascia of post triangle and into subclavian |
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which nerve travels w/ the external jugular vein?
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great auricular
branches to skin post to ear, ear, lower side of face, neck |
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what are the boundaries of the post tri?
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ant: SCM post border |
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CNXI
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accessory n
-found in post tri, -supplies trap and some SCM -consists of motor and spinal roots: spinal root from C1-C5 join the cranial root from medulla of brainstem to form XI spinal portion supplies the SCM and Trap |
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what are the subdivisions of the post tri?
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split by omohyoid:
1. Supraclavicular (Omoclavicular Triangle) bordered by inf edge of inferior belly of omohyoid clavicle SCM post border 2. Occipital triangle bordered by superior edge of inferior belly of omohyoid trapezius SCM post border |
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what are the boundaries of the ant tri?
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anteromedian line of neck
inferior border of body of mandible anterior border of SCM |
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what are the suprahyoid mm?
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(4) mylohyoid, geniohyoid, digastric, stylohyoid |
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what are the infrahyoid mm?
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(4) sternohyoid, omohyoid, sternothyroid, thyrohyoid
TOSS |
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mylohyoid
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thin, flat, form a sling inferior to tongue. feel if push ton forward |
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geniohyoid
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superior to mylohyoid, reinforces the floor of mouth
o: mandible i: body of hyoid n: ventral ramus of C1 via the Hypoglossal Nerve (XII) act: pulls hyoid anterosuperiorly during swallowing |
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digastric
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o: Ant: digastric fossa on mandible |
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CN XII
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hypoglossal - motor
swallowing, speech geniohyoid |
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CN VII
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facial - S&M
facial expression, taste from ant 2/3 of ton, glands (not parotid) post belly digastric, stylohyoid |
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CN V
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trigeminal - S&M |
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stylohyoid
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o: styloid process of temporal bone
i: body of hyoid bone n. Branch of VII (Facial) act.: raises hyoid during swallowing |
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strap muscles
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the infrahyoid mm. ribbon-like
(sternohyoid, omonyoid, sternothyroid, thyrohyoid) |
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sternohyoid
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superficial |
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omohyoid
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o: Inf. Belly - superior border of scapula near
suprascapular notch Sup. Belly - Intermediate tendon i: Inf. Belly - Intermediate tendon Sup. Belly - hyoid body n: C1-C3 via the ansa cervicalis act.: depresses hyoid bone |
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sternothyroid
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deep to sternohyoid, thin muscle
o: Post. surface of manubrium i: side of thyroid cartilage n: C1-C3 via ansa cervicalis act. pulls larynx inferiorly |
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thyrohyoid
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superior continuation of Sternothyroid Muscle
o: Thyroid cartilage - oblique line on side i: body of hyoid n. not ansa - C1 ventral ramus via the Hypoglossal Nerve act: elevates the larynx in swallowing |
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the ___ separates the ___ gland into internal and external components
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mylohyoid, submandibular |
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what are the division of the ant tri?
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(4) submandibular, submental
carotid, muscular |
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submandibular tri
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(part of ant tri) ('DIGASTRIC tri')
borders: inf border of mandible, 2 bellies of digastric Contents: submandibular gl, submandibular duct, CN XII (and part of c1), sylohyoid m (attached to post belly of digastric) |
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carotid tri
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borders: SCM (ant edge), sup belly omohyoid, post belly digastric
contents: common carotid a and division into int/ext carotid, branches of ext carotid a, carotid sinus, carotid body, hypoglossal n carotid sheath |
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what is contained in the carotid sheath?
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common and internal carotid a
vagus nerve (X) internal jugular vein ansa lies on top of sheath |
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what does the carotid sinus do?
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responds to change in art pressure
is at origin of int carotid (blocking -> syncope) |
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what does the carotid body do?
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chemoreceptor (inc CO2 or dec O2) |
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what are the branches of the external carotid artery?
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superior Thyroid - supplies thyroid |
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what is the relation of the vagus in the carotid sheath?
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vagus is btwn and post to carotid and jug
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muscular triangle
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Boundaries: superior belly of Omohyoid Muscle
Anterior SCM Midline of neck Contents: Infrahyoid muscles thyroid gland STRAP MUSCLES ARE IM MUSCULAR tri |
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submental triangle
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Unpaired
Boundaries: Hyoid Bone inferiorly Left and Right Anterior Bellies of Digastric m. laterally Floor: - Mylohyoid Muscles Contents: Submental lymph nodes receive lymph from tip of tongue, floor of mouth Small veins that join to form Anterior Jugular Vein. |
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which is more anterior: external carotid a, internal carotid a?
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ext
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which is more ant: carotid a, jugual v?
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carotid |
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which side is the brachiocephalic trunk located off aorta?
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R |
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which side is the common carotid located off aorta?
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L
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which side is the subclavian located off aort?
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L
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what are the branches of the thyrocervical trunk?
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inferior thyroid, transverse cervical, suprascapular |
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where does the ant jugular drain?
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ext jug v
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where does the ext jugular drain?
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subclavian v
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what does the right recurrent laryngeal nerve loop around?
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subclavian a
loops upward bwn esophagus and trachea to larynx |
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what does the left recurrent laryngeal nerve loop around?
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arch of aorta
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what is the course of the vagus?
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goes down carotid sheath post to the blood vessels |
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where is the sympathetic chain located?
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in fascia of post carotid sheath at level of 1st rib
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what supplies the thyroid w/ blood?
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superior thyroid a: 1st branch of Ext. Carotid Art. |
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what veins go from thyroid gland?
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parathyroid glands
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2 on each side, under fascia of thyroid |
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what is location of esophagus?
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betwen trachea and ant long lig of vert col |
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what are the fascial planes?
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(4)
enveloping fascia, prevertebral fascia, carotid sheath, pretracheal fascia |
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enveloping fascia
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(superficial layer of the deep fascia) |
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prevertebral fascia
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surrounds vertebral m. (post neck(
transverse extension from one enveloping layer to another. Anterior to the prevertebral muscles separates neck into areas post to prevertebral fascia and ant to prevertebral fascia |
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pretracheal fascia
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Anterior part of the neck |