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77 Cards in this Set
- Front
- Back
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Location of ant. cervical triangle in relation to sternomastoid m.
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anterior to sternomastoid m.
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Boundaries of ant. cervical triangle
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Superior: lower border of body of mandible
Posterior: anterior border of sternomastoid Anterior: midline extending from chin to sternal notch of manubrium |
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Name subdivisions of ant. cervical triangle
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submandibular, carotid, muscular, submental triangles
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boundaries of submandibular triangle
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body of mandible, digastric m. (ant/post bellies)
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boundaries of carotid triangle
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sternomastoid, posterior belly of digastric, superior belly of omoyoid
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boundaries of muscular triangle
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superior belly of omohyoid, lower anterior margin of sternomastoid, midline of neck
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boundaries of submental triangle
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ant. bellies of both right and left digastric mm., body of hyoid
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superficial structures of ant. cervical triangle
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platysma, ant. jugular veins, cutaneous nn. (great auricular, transverse cervical), motor n. (cervical branch of facial n.)
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origin/insertion of platysma
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o: superficial fascia of upper pectoral and deltoid regions
i: skin and facial muscles overlying mandible |
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actions of platysma
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tenses subcutaneous tissue of neck, assists in depressing lip and mandible
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orientation of external jugular vv.
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vertical near midline
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relation of anterior jugular vv. to sternomastoid and what they empty into....
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course deep to sternomastoid m. to empty into external jugular vv. in posterior cerv. triangle
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Great auricular and transverse cervical are branches of what...
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cervical plexus (C2,C3)
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facial n. is CN .....
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VII
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muscles of facial expression controlled by what nerve?
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CN VII
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name of fascia surrounding sternomastoid mm.
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investing fascia
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describe where investing fascia is found and what it is attached to.
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surrounds sternomastoid m., covers anterior cervical triangle, fuses in midline w/ counterpart from other side. Attached to bony structures in immediate vicinity (mandible, clavicle, manubrium)
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Infrahyoid mm. also known as...
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strap mm.
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how many infrahyoid mm.
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4
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what layers are infrahyoid mm. found in?
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b/w investing fascia and visceral fascia of thyroid gland trachea and esophagus
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action of strap mm.
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depress hyoid and larynx
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innervation of infrahyoid mm.
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motor branches of ansa cervicalis
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what mm. compose floor of submandibular triangle?
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mylohyoid, hypoglossus, middle pharyngeal constrictor
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contents of submandibular triangle
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superficial lobe of submandibular gland, facial artery and vein, hypoglossal n., lingual a.
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hypoglossal n. also known as, and innervates..
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CN XII, muscles of tongue
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lingual a. is a branch of what artery?
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external carotid a.
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common carotid bifurcates at what level?
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level of hyoid bone
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two terminal branches of common carotid...
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internal/external carotid a.
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branches of internal carotid a. in cervical and facial region
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none
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location of internal carotid in relation to external carotid a.
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posterior, lateral to external carotid
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Carotid sinus present on external or internal carotid a.
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internal
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carotid sinus contains what?
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baroreceptors of CN IX
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CN IX connects carotid sinus w/ what structure?
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cardiovascular regulating center in brainstem
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What is present b/w bifurcation of internal/external carotid aa.?
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carotid body
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contents of carotid body
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chemoreceptors (O2) of CN IX
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another name for CN IX
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glossopharyngeal
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CN IX connects carotid body and what structure?
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cardiovascular monitoring system in brainstem
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What do branches of external carotid a. supply?
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extracranial portions of face, upper cervical region
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What are the branches of the external carotid a.?
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superior thyroid, lingual, ascending pharyngeal, facial artery, occipital a., posterior auricular
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superior thyroid a. supplies..
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thyroid and parathyroid glands
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two branches of superior thyroid a.
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superior laryngeal, cricothyroid aa.
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lingual a. supplies...
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tongue
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ascending pharyngeal a. supplies...
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lateral pharyngeal wall
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facial a. supplies...
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lips, nose, medial angles of eyes
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occipital a. supplies,
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scalp in occipital region
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posterior auricular a. supplies....
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external auditory canal
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branch of posterior auricular a. and what it supplies....
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stylomastoid branch, supplies CN VII in stylomastoid canal
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internal jugular v. drains.... exits skull where.... becomes tributary of....
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brain, jugular foramen, brachiocephalic v.
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Nerves w/in carotid triangle
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Vagus, Spinal accessory n., Hypoglossal n., ansa cervicalis
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contents of carotid sheath
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internal jugular v., internal carotid a., CN X
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CN X exits skull via...
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jugular foramen
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CN X supplies
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motor branches: skeletal muscles of palate, pharynx, and larynx, external laryngeal n. (cricothyroid m.)
sensory branches: mucosa of esophagus, larynx, trachea, internal laryngeal n. parasympathetic: glands in esophagus, larynx, trachea, thoracic and abdominal viscera |
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Spinal accessory n. innervates...
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Sternomastoid, trapezius
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hypoglossal n. innervates..
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muscles of tongue
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ansa cervicalis innervates..
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geniohyoid and strap muscles
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contents of carotid triangle
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carotid bifurcation, carotid sinus, carotid body, branches of external carotid, ansa cervicalis, vagus, hypoglossal n. spinal accessory n., internal jugular v.
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other names for vagus n., spinal accessory n., hypoglossal n.
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CN X, CN XI, CN XII
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contents of muscular triangle
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veins: anterior jugular v., communicating v. connecting ant. jugular to common facial v.
muscles: infrahyoid viscera: trachea, larynx endocrine glands: thryoid glands, parathyroid glands |
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name infrahyoid mm.
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sternohyoid, sternothyroid, omohyoid, thryohyoid
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describe thyroid gland
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two hemispheres connected by isthmus. occasionally a pyramidal lobe coursing superiorly from isthmus
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where does isthmus of thryoid gland cross trachea
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b/w 2 and 3rd tracheal rings
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Arterial supply of thyroid gland
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superior/inferior thryoid aa.
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Veinous supply of thyroid gland...
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superior, middle, inferior thyroid vv.
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Thyroid gland secretes
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thyrocalcitonin, triiodothyronine, tetraiodothyronine
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T3 and T4 help regulate
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basal metabolic rate ( rate of oxygen consumption)
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thyrocalcitonin regulates
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calcium metabolism
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# of parathyroid glands..
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4
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location of parathyroid glands
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one pair on posterior surface of each hemisphere
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blood supply of parathyroid glands
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same as thryoid gland
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parathyroid glands secrete... which regulates.....
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parathormone, calcium metabolism
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contents of submental triangle....
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beginning of anterior jugular v. and small lymph nodes that drain tongue
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how many organs in body need iodine?
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one, thyroid gland
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what type of tissue has most well developed blood supply?
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endocrine
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What nerve supplies laryngeal mm.?
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recurrent laryngeal nn. (right and left)
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lt. recurrent laryngeal n. loops around what structure before ascending to laryngeal mm.?
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aortic arch
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rt. recurrent laryngeal n. loops around what structure before ascending to laryngeal mm.?
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rt. subclavian
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what cranial nn. exit the skull via the jugular foramen?
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CN X, XI, XII
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