Arm and Anterior Forearm

Question 1

Compartments of he arm

Answer 1

Posterior and anterior

Question 2

Brachial fascia

Answer 2

Deep fascia of the arm

Question 3

Intermuscular septa

Answer 3

Extensions of the deep fascia that attach to the bone

Question 4

How are compartments formed

Answer 4

By extensions of deep fascia attaching to bones

Question 5

Anterior compartment arm muscles

Answer 5

Biceps brachii (long head and short head)
Coracobrachialis
Brachialis

Question 6

Major action of muscles of anterior compartment of arm

Answer 6

Flexion of forearm and some at glenohumeral joint

Question 7

All muscles of anterior compartment innervated by

Answer 7

musculocutaneous nerve

Question 8

Biceps brachii function and innervation

Answer 8

Flexor of shoulder and elbow, supinator of forearm

Musculocutaneous nerve

Question 9

What happens as biceps tendon crosses elbow joint

Answer 9

Bicipital aponeurosis is given off and passes medially and superficial to brachial artery and median nerve to fuse with deep fascia of the forearm

Question 10

bicipital aponeurosis

Answer 10

Aponeurotic sheet that passes laterally and medially to the brachial artery and median nerve to fuse with deep fascia of the forearm

Question 11

Bicipital aponeurosis provides a ____

Answer 11

secondary attachment

Question 12

Coracobrachialis function and innervation

Answer 12

Flexes arm

Musculocutaneous

Question 13

Brachials function and innervation

Answer 13

Flexes forearm

Musculocutaneous

Question 14

Posterior compartment muscles

Answer 14

Triceps brachii (long, lateral, medial heads)

Question 15

Major action of posterior compartment

Answer 15

Extension at the elbow and some at glenohumeral

Question 16

All muscles of posterior compartment innervated by the

Answer 16

Radial nerve

Question 17

Anconeus

Answer 17

also helps to extend elbow

Radial

Question 18

Anterior compartment arteries

Answer 18

Brachial

Question 19

Posterior compartment arteries

Answer 19

Deep brachial (profunda brachii)
posterior humeral circumflex

Question 20

Median nerve innervations in arm

Answer 20

None

Question 21

Musculocutaneous nerve innervations of arm

Answer 21

Anterior flexor muscles in arm

Becomes cutaneous in forearm

Question 22

Ulnar nerve

Answer 22

Medial side of brachial artery…goes behind medial epicondyle…funny bone feeeling
No branches in the arm

Question 23

Radial nerve in arm

Answer 23

Extensor compartment of arm

All extensors of forearm as well

Question 24

What is radial nerve accompanied by?

Answer 24

Deep brachial artery

Question 25

Fracture in surgical neck of humerous leaves what vulnerable and why?

Answer 25

Axillary nerve and posterior humeral circumflex artery | Axillary nerve wraps around surgical neck of humerus

Question 26

Mid-shaft fracture leaves what vulnerable and why?

Answer 26

Radial and deep brachial because wrap around humerus in groove for radial nerve

Question 27

Fracture of medial epicondyle leaves what vulnerable and why?

Answer 27

Ulnar nerve because it lies posterior to the median epicondyle

Question 28

Fracture of distal end of humerus leaves what vulnerable and why?

Answer 28

Median nerve because it lies anterior to distal end of humerus

Question 29

Cubital fossa bound by

Answer 29

Epicondyles Pronator teres Brachioradialis

Question 30

Bicipital aponeurosis

Answer 30

Extension of biceps tendon...roof of cubital fossa

Question 31

What is found in cubital fossa and where relative to bicipital aponeurosis

Answer 31

Tendon of biceps Brachial artery Median nerve

Question 32

Which vein does bicipital aponeurosis protect?

Answer 32

Median cubital vein

Question 33

Components of forearm

Answer 33

Posterior and anterior

Question 34

Antebrachial fascia

Answer 34

Deep fascia that encloses both compartment muscles

Question 35

What is proximally attached to antebrachial fascia?

Answer 35

Forearm muscles

Question 36

What separates forearm posterior and anterior

Answer 36

Interosseus membrane holding together radius and ulna

Question 37

Which forearm bone has intermuscular septa and which doesn't

Answer 37

Radius | Ulna is subcutaneous the entire way down

Question 38

Layers of anterior compartment of forearm and how separated?

Answer 38

Deep and superficial | Fascial cleft

Question 39

Majority of anterior forearm muscles arise from

Answer 39

Medial epicondyle

Question 40

Major action of anterior forearm

Answer 40

At writse...some flexing of forearm

Question 41

Muscles of superficial layer of anterior forearm

Answer 41

``` Pronator teres Flexor carpi radialis Palmaris Longus Flexor carpi Ulnaris Flexor digitorum superficialis ```

Question 42

Muscles of deep layer of anterior forearm

Answer 42

Flexor digitorum profundus Flexor pollicis longus Pronator quadratus

Question 43

Innervation of anterior compartment of forearm

Answer 43

All innervated by median nerve except for flexor carpi ulnaris and the medial half of flexor carpi digitorum profundus

Question 44

Pronator teres function and innervation

Answer 44

Pronates and flexes the forearm | Median nerve

Question 45

Flexor carpi radialis function and innervation

Answer 45

Flexes and abducts the hand | Median nerve

Question 46

Palmaris longus function and innervation

Answer 46

85% of people Flexes hand Median nerve

Question 47

Flexor carpi ulnaris function and innervation

Answer 47

Flexes and adducts hand | Ulnar nerve

Question 48

Flexor digitorum superficiales function and innervation

Answer 48

Flexes IP joint (and MCP joint and wrist) | Median nerve

Question 49

Flexor digitorum profundus function and innervation

Answer 49

Flexes distal IP joint (and proximial IP and MCP and wrist) | Median nerve for digits 2 and 3, ulnar nerve for digits 4 and 5

Question 50

Flexor pollicis longus function and innervation

Answer 50

Flexes IP joint (and MCP and wrist) | Median nerve

Question 51

Pronator quadratus function and innervation

Answer 51

Pronates forearm | Median nerve