Term
| posterior triangle borders |
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Definition
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Term
| posterior triangle subdivisions |
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Definition
| occipital and subclavian triangles |
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Term
| post. occipital triangle borders |
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Definition
| trapz, SCM, and inferior belly of omohyoid |
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Term
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Definition
| SCM, inferior belly of omohyoid, and clavicle |
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Term
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Definition
| platysma and superficial layer of cervical fascia |
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Term
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Definition
| splenius capitis, levator scapulae, scalenus ant., med., and post. |
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Term
| posterior triangle nerves |
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Definition
| CN 10/vagus, CN 11, LON/C2, greater auricular nerve/C2-3, transverse cervical nerve C2-3, supraclavicular nerves/C3-4 |
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Term
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Definition
| external and internal jugular veins |
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Term
| posterior triangle arteries |
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Definition
| common carotid, occipital, suprascapular, transverse cervical, subclavian |
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Term
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Definition
| internal surface of the skin; includes platysma |
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Term
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Definition
| surrounds the entire neck |
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Term
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Definition
superficial layer: encloses sternohyoid and omohyoid
deep layer: sternohyoid and thyrohyoid |
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Term
| cervical visceral fasciae |
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Definition
pre-tracheal: covers larynx and trachea, encloses thyroifd cartilage
buccopharyngeal: covers cheek and dorsal esophagus |
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Term
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Definition
encloses the vertebral column and muscles
axillary sheath: encloses subclavian vessels and brachial plexus
Sibson's: deep to scalene muscles |
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Term
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Definition
| invests the common carotid arteries, internal jugular veins, vagus nerve, lymph nodes etc. |
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Term
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Definition
| symphisis menti, SCM, and mandible |
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Term
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Definition
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Term
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Definition
| pharynx, larynx, and thyroid |
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Term
| suprahyoid muscles: digastric |
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Definition
| 1. Anterior belly of digastric muscle’s origin is inside of mandible, posterior is mastoid. Real origin is horn of hyoid. When muscles have 2 bellies assume they can act independently. This muscle can be used to open the mouth. It also has multiple innervations, front muscle is innervated by CN5, back muscle is CN7. |
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Term
| suprahyoid muscles: stylohyoid |
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Definition
| raises it up the jaw and puts it back, innervated by CN7. This muscle’s origin is more anterior compared to the digastric posterior as it descends it passes the digastric muscles over. It also elevates the hyoid bone. Innervated by CN5. |
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Term
| infrahyoid muscle: sternohyoid |
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Definition
| depresses (take it down) the hyoid to take it out of the way, also steadies the pharynx and larynx. It’s innervated by branches of ansa cervicalis C1-C3mainly. |
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Term
| infrahyoid muscle: sternothyroid |
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Definition
| underneath sterno hyoid. It originates in the sternum and inserts in an oblique line of the thyroid cartilage. It rotates the thyroid cartilage forward to open up your airway. Innervated by ansa cervicalis C2-C3 mainly. |
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Term
| infrahyoid muscles: thyrohyoid |
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Definition
| depresses the hyoid bone, also can act antagonistic to sternothyroid and put the thyroid cartilage back in place to close the orifice. The innervation for this muscle is C1.via Hypoglossal nerve CN XII |
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