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Flashcards in Forearm Deck (37):
1

What nerve innervates muscles of the muslces of the anterior (flexor) compartment of the upper arm?

Musculocutaneous Nerve

2

What muscle innervates muscles of the posterior (extensor) compartment of the upper arm?

Radial Nerve

3

What artery supplies the anterior compartment of upper arm?

Brachial artery

4

What artery supplies the posterior compartment of the upper arm?

Deep brachial artery

5

Where to brachial and deep brachial arteries branch off from?

Axillary artery

6

Which artery passes through and supplies with blood the supinator?

Posterior interosseous artery

7

8

Where do all flexors of the forearm originate?

lateral epicondyle of humerus (common flexor origin/tendon)

9

Where do all extensors of the forearm orginate?

medial epicondyle of humerus (common extensor origin/tendon)

10

Flexors of the forearm

  1. Pronator teres
  2. Flexor carpi radialis
  3. Palmaris Longus
  4. Flexor carpi ulnaris
  5. Flexor digitorum superficialis
  6. protanor quadratus 
  7. Flexor digitorum profundus
  8. ***Flexor pollicis longus

11

 Extensors of the Wrist

  1. Extensor Carpi Radialis Longus
  2. Extensor carpi ulnaris
  3. Extensor carpi radialis brevis

 

  • All arise from lateral condyle of humerus (common extensor origin/tendon)

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12

Extensors of the digits and where they insert

  1. Extensor digitorum 
  2. Extensor Indicis
  3. Extensor minimi
  • All insert into extensor expansion of these digits

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13

Extensor expansion

  • insertion of extensors of digits
  • tendons split into lateral and central parts
  • merge with intrinsic hand muscles to make expansion hood
  • enable intricate finger movements

14

Extensors/Abductors of Thumb

  1. Extensor Policis longus
  2. Extensor Policis brevis
  3. Abductor Policis longus

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15

What secures extensor muscles at the wrist?

extensor retinaculum

16

What defines the boundaries of the anatomical snuff box?

Thumb adductor/extensors (abductor policis longus, extensor policis longus, extensor policis brevis)

 

17

What innervates all of the digit/thumb extensors?

Posterior interosseous nerve (from Radial Nerve)

18

Trace path of Radial nerve from posterior cord

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19

Ulnar nerve

  • passes through medial epicondyle
  • innervates lateral 1/2 of FDS
  • innervates flexor carpi ulnaris
  • innervates intrinsic hand muslces

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20

Median Nerve

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21

Trace pathways of brachial artery

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22

What bones do the distal radius articulate with?

  1. Lunate
  2. Scaphoid
  3. Triquem 

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23

What three muslces adduct and medially rotate the humerus?

  1. Pectoralis Major
  2. Latissimus Dorii
  3. Teres Major

24

What three muscles originate at the corocoid process?

  1. Short head of biceps brachii
  2. coracobrachiallis 
  3. pectoralis minor

25

What artery does the median nerve travel with?

Brachial artery

26

What supplies blood to the upper arm (anterior)

Brachial artery

27

What artery travels with the ulnar nerve around the medial epicondyle of the humerus?

Superior ulnar collateral artery

28

where do all heads of triceps insert?

olecranon process

29

Superficial Lymphatic Vessels 

  • Drain lymph from subcutaneous tissues 
  • follow Cephalic and basilic veins 

30

Deep lymphatic vessels

  • Drain from joints, muslces, bones
  • accompany deep veins

31

Passage of the lymphatic system 

Superficial/deep Vessels ---> axillary nodes --> Right lymphatic/thoracic duct ---> subclavian vein

32

what deepens the glenohumeral joint?

Glenoid labrum

33

Transverse humeral ligament

covers the bicipital groove and encloses the long head tendon of the biceps brachii

34

Rotator Cuff tendons

  1. Coracoacromial ligament 
  2. Superior glenohumeral ligament
  3. Middle glenohumeral ligament
  4. Inferior glenohumeral ligament 

35

Most common direction of Glenohumeral joint dislocations

Antero-inferiorly

36

Which is one of the most commonly fractured bones?

  1. Clavicle
  2. Surgical neck of the humerus 

37

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