Gross Anatomy - Brachial Plexus

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Author:
glparker86
ID:
272044
Filename:
Gross Anatomy - Brachial Plexus
Updated:
2014-04-27 14:45:05
Tags:
Gross
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Description:
Brachial Plexus
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  1. Dorsal Scapular identify the following ? 
    Origin  -
    Course -
    Innervation -
    -Ventral Ramus of C5 (sometimes C4)

    -Pierce scalenus medius , descends to levator scapulae and enters rhomboids

    -Rhomboids (occasionally levator scapulae)
  2. Long thoracic identify the following ? 
    Origin -  
    Course - 
    Innervation -
    -C5 through C7

    -Descends to C8 and T1 then passes serratus anterior

    -Serratus Anterior
  3. Subclavius  identify the following ?
    Origin  -
    Course -
    Innervation -
    - C5 and C6 ( sometimes C4)

    -descends between posterior to clavicle and anterior to brachial plexus and subclavian artery

    -subclavius and subclavicular joint
  4. Suprascapular  identify the following ?
    Origin-
    Course-
    Innervation -
    - C5 and C6 ( often C4)

    -passes laterally over posterior triangle into subscapular notch under scapular ligament 

    -Supraspinatus , Infraspinatus
  5. Lateral pectoral identify the following ?
    Origin-
    Course-
    Innervation -
    - Lateral Cord C5 though C7

    -Pierces clavipectoral fascia to pectoral muscles

    -Pectoralis Major primarily and secondary loop to pectoralis minor
  6. Musculocutaneous  identify the following ?Origin  -Course -Innervation -
    -Lateral cord C5-C7

    -enters coracobrachialis and descends between biceps brachii and brachialis 

    -Coracobrachialis , biceps brachii , brachialis , lateral antebrachial cutaneous nerve
  7. Median identify the following ?
    Origin-
    Course-
    Innervation -
    - C5 through T1

    -Lateral root and medial root join to make median , which is lateral to axillary artery

    -flexor muscles of forearm , (except flexor carpi ulnaris and ulnar half of flexor digitorum profundus ) and five hand muscles
  8. Medial pectoral identify the following ?
    Origin-
    Course-
    Innervation -
    -C8 and T1

    - through axillary artery and vein to deep pectoralis major

    -Pectoralis minor and part pectoralis major
  9. Medial brachial cutaneous identify the following ?
    Origin-
    Course -
    Innervation -
    - C8 to T1

    -medial side of axillary vein and communicates with intercostobrachial nerve

    -skin medial side of arm
  10. Medial antebrachial cutaneous identify the following ?
    Origin-
    Course-
    Innervation -
    -C8 and T1

    - between axillary artery and vein 

    -skin of medial forarm
  11. Ulnar identify the following ?
    Origin-
    Course-
    Innervation -
    - C8 to T1 ( sometimes C7)

    -medial aspect of arm runs posterior to medial epicondyle to enter forearm

    - 1 (1/2) of the flexor muscles of forearm , small muscles in hand skin on hand medial to 4th digit
  12. Upper subscapular identify the following ?
    Origin-
    Course-
    Innervation -
    - Posterior branch C5 and C6

    -passes posteriorly enters subscapularis

    -superior subscapularis
  13. Thoracodorsal identify the following ?
    Origin-
    Course-
    Innervation -
    -Posterior branch C5 to C6 

    -between upper and lower subscapularis nerves and then runs down axillary wall to latissimus dorsi

    -Latissumus dorsi
  14. Lower Subscapular identify the following ?
    Origin-
    Course-
    Innervation -
    - Posterior C5 and C6

    -inferiolaterally deep to subscapular artery and vein  to subscapularis and teres major

    -inferior subscapularis and teres major
  15. Axillary identify the following ?
    Origin-
    Course-
    Innervation -
    - Terminal branch posterior C5 and C6

    - passes quadrangular space with posterior circumflex humeral artery then around surgical neck of humerus then turns into lateral brachial cutaneous nerve

    -Teres Minor , Deltoid , shoulder joint , skin of inferior deltoid
  16. Radial identify the following ?
    Origin-
    Course-
    Innervation -
    - C5 to T1

    -posterior to axillary artery , then radial groove with deep brachial artery , then pass between long and medial head of triceps

    -Triceps brachii , aconeous , brachioradialis , extensor muscles forearm , skin posterior portion of arm

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