Qrt 2 Cervical anatomy ch 2 muscles and triangles of the neck

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bradley.knox
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Qrt 2 Cervical anatomy ch 2 muscles and triangles of the neck
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2013-02-05 19:04:46
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Muscles neck triangles
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Muscles of neck and triangles
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  1. What is the most superficial anterior neck muscle?
    Platysma
  2. What is the origin, insertion, action and innervation of the Platysma?
    Origin: Fascia of pectorlis major and      deltoid

    Insertion: Mandible

    Action: Depresses mandible and angle of mouth

    Innervation: CNVII
  3. What is the origin, insertion, action, and innervation of the trapezius?
    Origin: External occipital protuberance, Ligamentum nuchae, SP's of C7 - T12

    Insertion: Lateral 1/3 clavicle, spine of scapula, acromion process

    Action: Elevates, retracts, depresses  scapula

    Innervation: CN XI, C3/C4 from cervical plexus
  4. What is the origin, insertion, action, and innervation of the Sternocleidomastoid muscle?
    • Origin: Manubrium (sternal head)
    •            Clavicle (clavicular head)
    • Insertion: mastoid process

    Action: main flexor of head

    Innervation: CN XI
  5. What are the two superficial and two deep infrahyoid muscles?
    Superficial: sternohyoid and omohyoid

    Deep: Sternothyroid and thyrohyoid
  6. What is the origin, insertion, action, and innervation of the sternohyoid muscle?
    Origin: manubrium, medial clavicle

    Insertion: body of hyoid bone

    Action: Depresses hyoid bone and larynx

    Insertion: C1-C3 via ansa cervicalis
  7. What is the origin, insertion, action, and innervation of the omohyoid muscle?
    • Origin: Inferior b. - scapula
    •            Superior b. - intermediate
    •                                tendon
    • Insertion: Inferior b. - intermediate
    •                                  tendon
    •                 Superior b. - hyoid
  8. What is the origin, insertion, action, and innervation of the sternothyroid?
    Origin: manubrium

    Insertion: thyroid cartilage (oblique line of lamina)

    Action: depresses larynx

    Innervation: C2-C3 via ansa cervicalis
  9. What i s the origin, insertion, action, and innervation of the thyrohyoid?
    Origin: thyroid cartilage (oblique line of lamina)

    Insertion: body of hyoid bone

    Action: depresses hyoid bone

    Innervation: C1 via hypoglossal nerve (C1-C2)
  10. What are the four suprahyoid muscles?
    • Digastric
    • Stylohyoid
    • Mylohyoid
    • Geniohyoid
  11. Digastric origin, insertion, action:
    • Origin:
    •    posterior b. - mastoid process
    •    Anterior b. - digastrict fossa of
    •                      mandible
    • Insertion:
    •    Posterior b. - intermediate tendon
    •    Anterior b. - Intermediate tendon

    Action: Elevate hyoid bone or depress mandible when hyoid fixed
  12. Stylohyoid origin, insertion, action:
    • Origin:
    •   Styloid process
    • Insertion:
    •   hyoid bone
    • Action:
    •   Elevates hyoid bone and tongue
  13. Mylohyoid origin, insertion, action:
    • Origin:
    •   Mylohyoid line of mandible
    • Insertion:
    •   Hyoid bone and median raphe
    • Action:
    •   elevates hyoid and floor of mouth
  14. Cricothyroid origin, insertion, action:
    • Origin:
    •   anterolateral cricoid cartilage
    • Insertion:
    •   inferior thyroid cartilage
  15. What are the borders of the anterior triangle?
    • Anterior: 
    •  Line from symphysis menti to sternal  notch

    • Posterior:
    •   SCM
    • Superior:
    •   Inferior margin of mandible
  16. What are the four triangles of the anterior triangle?
    • Digastrict (submandibular)
    • Submental (suprahyoid)
    • Carotid
    • Muscular
  17. What are the borders of the digastric?
    • Superior:
    •   Inferior margin of mandible
    • Anterior: 
    •   Anterior b. of digastrict
    • Posterior:
    •   Posterior b. of digastrict
  18. What anterior triangle contains the ECA, ICA, IJV, CN IX, CN X, and     CN XII?
    Digastrict
  19. What are the borders of the submental triangle?
    • Lateral:
    •  Anterior digastrict muscles
    • Cuadal:
    •   Body of hyoid
    • Medial:
    •   Midline of neck
  20. What are the borders of the carotid triangle?
    • Superior:
    •   posterior belly of digastric and stylohyoid
    • Anterior:
    •   superior b. of omohyoid
    • Posterior:
    •   SCM
  21. What anterior triangle contains the CCA, ECA, ICA, IJV, CNIX, CNX, CNXII?
    Carotid triangle
  22. What are the borders of the muscular triangle?
    • Superior/posterior:
    •   Superior B. of omohyoid
    • Inferior/posterior:
    •   SCM
    • Anterior
    •   Midline
  23. What are the borders of the posterior triangle?
    • Anterior:
    •   SCM
    • Posterior: 
    •   Trapezius
    • Caudally:
    •   Clavicle
  24. What are the two triangles of the posterior triangle?
    • Occipital
    • Omoclavicular/subclavian
  25. What are the boundaries of the Occipital triangle?
    • Anterior:
    •   SCM
    • Posterior:
    •   Trapezius
    • Caudal:
    •   Inferior b. of omohyoid
  26. What are the borders of the omoclavicular/subclavian triangle?
    • Superior/posterior:
    •   Inferior belly of omohyoid
    • Superior/anterior:
    •   SCM
    • Inferior:
    •   clavicle
  27. What are the three longus colli muscles?
    • Superior oblique
    • inferior oblique
    • verticle
  28. What is the origin, insertion of superior oblique longus colli?
    • Origin:
    •   TP's of C3-C5
    • Insertion:
    •   Anterior arch of atlas
  29. What is the action of the longus colli?
    flexion of head and neck
  30. What is the action of the longus capitus?
    • flex head and neck
    • ipsilateral rotation
  31. Where do the subclavian artery and brachial plexus emerge?
    Anterior and middle scalene
  32. What is the insertion of anterior and posterior scalene muscles?
    1st and 2nd ribs
  33. What artery becomes the axillary artery at the lateral border of the first rib?
    subclavian artery
  34. What senses changes in blood pressure near the bifurcation of the common carotid?
    Carotid sinus
  35. What senses changes in blood carbon dioxide levels near the bifurcation of common carotid artery?
    Carotid body
  36. Where do the superior and middle thyroid veins drain?
    jugular vein

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