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42 Cards in this Set
- Front
- Back
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Boundaries of Posterior Cervical Triangle
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Base: Middle 1/3 of Clavicle
Posterior: Trapezius Anterior: Sternomastoid |
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Roof of Posterior Cervical Triangle
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Skin, Superficial Fascia (containing platysma), investing fascia with CN XI embedded within
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Floor of Posterior Cervical Triangle
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5 muscles covered w/ prevertebral fascia
Splenius capitis, levator scapulae, posterior scalene, middle scalene, anterior scalene |
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Origin/Insertion of Sternomastoid
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O: manubrium and medial 1/3 of clavicle
I: mastoid process and lateral 1/2 of superior nuchal line |
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Actions of Sternomastoid
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One contracts: rotates, draws head to shoulder
Both contract: flex cervical column |
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Innervation of Sternomastoid
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CN XI ( VPR of C2)
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Contents of Posterior Cervical Triangle
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CN XI
Omohyoid m. Occipital Triangle Supraclavicular Triangle |
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Origin/Insertion of omohyoid
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O: medial lip of suprascapular notch
I: lower border of the body of the hyoid |
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actions of omohyoid
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steadies, depresses, retracts hyoid and larynx
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External Jugular V. is trubutary of
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Subclavian v.
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Innervation of omohyoid
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ansa cervicalis (C2,C3)
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Origin of CN XI
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Dual origin
Cranial root: Accessory to CN X, provides part of motor component Spinal root: joined by fibers of VPR of C2 (supply sternomastoid), C3 and C4 (both supply trapezius) |
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External Jugular v. superficial to...
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sternomastoid m.
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tributaries of external jugular v.
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Retromandibular,Posterior Auricular, Transverse Cervical, Suprascapular, Anterior Jugular vv.
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subclavian v. relation to anterior scalene
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anterior to anterior scalene
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union of subclavian and internal jugular v. forms....
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brachiocephalic v.
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Rt. subclavian a. is branch of...
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brachiocephalic trunk
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Lt. subclavian a. is branch of....
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aortic arch
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Subclavian a. relation to anterior scalene
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posterior to anterior scalene
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Parts of subclavian a. and branches
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1. medial to anterior scalene
branches: vertebral, internal thoracic, thyrocervical, costocervical 2. Passes posterior to anterior scalene (no branches) 3. Lies on upper surface of 1st rib, producing groove on rib (no branches) |
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Occipital a. is branch of..
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external carotid
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occipital a. runs.....
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deep to sternomastoid, crosses apex of posterior cervical triangle on way to scalp of occipital region
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Brachial plexus emerges b/w
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Anterior and middle scalene muscles
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Lesser Occipital n. originates from what levels?
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C2, C3
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What does lesser occipital n. innervate?
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Skin posterior to external ear
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Great auricular n. originates from what levels?
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C2, C3
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Relation of Great auricular n. to sternomastoid m.
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n. lies anterior to m.
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What does great auricular n. innervate?
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auricle of ear, skin of mastoid, parotid, masseteric regions
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Origin of Transverse Cervical n.
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C2, C3
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Path of transverse cervical n.
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travels anteriorly
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transverse cervical n. innervates
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skin of anterior cervical triangle
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Origin of supraclavicular nn.
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C3,C4
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How many supraclavicular nn. typically?
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3
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Path of supraclavicular nn.
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descend in neck to cross clavicle
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supraclavicular nn. innervate...
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supraclavicular triangle, pectoral, deltoid, and acromial regions
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lymph nodes drain....
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occipital scalp and back of the neck
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lymph nodes empty into...
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jugular lymph trunk
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Draw diagram depicting insertion of scalene mm., sublcavian a. and brachial plexus
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..
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compression of interscalene triangle can cause....
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vascular and neurological deficits in upper extremity
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Diagram veinous system from external jugular v., internal jugular v. to heart.
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..
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diagram heart and aortic arch (include branches)
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..
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Draw diagram of posterior cervical triangle (boundaries)
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..
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