Forearm

Question 1

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

Answer 1

Musculocutaneous Nerve

Question 2

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

Answer 2

Radial Nerve

Question 3

What artery supplies the anterior compartment of upper arm?

Answer 3

Brachial artery

Question 4

What artery supplies the posterior compartment of the upper arm?

Answer 4

Deep brachial artery

Question 5

Where to brachial and deep brachial arteries branch off from?

Answer 5

Axillary artery

Question 6

Which artery passes through and supplies with blood the supinator?

Answer 6

Posterior interosseous artery

Question 8

Where do all flexors of the forearm originate?

Answer 8

lateral epicondyle of humerus (common flexor origin/tendon)

Question 9

Where do all extensors of the forearm orginate?

Answer 9

medial epicondyle of humerus (common extensor origin/tendon)

Question 10

Flexors of the forearm

Answer 10

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

Question 11

Extensors of the Wrist

Answer 11

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)

Question 12

Extensors of the digits and where they insert

Answer 12

1. Extensor digitorum
2. Extensor Indicis
3. Extensor minimi

• All insert into extensor expansion of these digits

Question 13

Extensor expansion

Answer 13

• 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

Question 14

Extensors/Abductors of Thumb

Answer 14

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

Question 15

What secures extensor muscles at the wrist?

Answer 15

extensor retinaculum

Question 16

What defines the boundaries of the anatomical snuff box?

Answer 16

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

Question 17

What innervates all of the digit/thumb extensors?

Answer 17

Posterior interosseous nerve (from Radial Nerve)

Question 18

Trace path of Radial nerve from posterior cord

Answer 18

Question 19

Ulnar nerve

Answer 19

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

Question 20

Median Nerve

Answer 20

Question 21

Trace pathways of brachial artery

Answer 21

Question 22

What bones do the distal radius articulate with?

Answer 22

1. Lunate
2. Scaphoid
3. Triquem

Question 23

What three muslces adduct and medially rotate the humerus?

Answer 23

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

Question 24

What three muscles originate at the corocoid process?

Answer 24

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

Question 25

What artery does the median nerve travel with?

Answer 25

Brachial artery

Question 26

What supplies blood to the upper arm (anterior)

Answer 26

Brachial artery

Question 27

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

Answer 27

Superior ulnar collateral artery

Question 28

where do all heads of triceps insert?

Answer 28

olecranon process

Question 29

Superficial Lymphatic Vessels

Answer 29

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

Question 30

Deep lymphatic vessels

Answer 30

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

Question 31

Passage of the lymphatic system

Answer 31

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

Question 32

what deepens the glenohumeral joint?

Answer 32

Glenoid labrum

Question 33

Transverse humeral ligament

Answer 33

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

Question 34

Rotator Cuff tendons

Answer 34

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

Question 35

Most common direction of Glenohumeral joint dislocations

Answer 35

Antero-inferiorly

Question 36

Which is one of the most commonly fractured bones?

Answer 36

1. Clavicle 2. Surgical neck of the humerus

Question 37

ones