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Anatomy and Radiology - Test 1 > Arm and Anterior Forearm > Flashcards

Arm and Anterior Forearm Flashcards

1
Q

Compartments of he arm

A

Posterior and anterior

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2
Q

Brachial fascia

A

Deep fascia of the arm

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3
Q

Intermuscular septa

A

Extensions of the deep fascia that attach to the bone

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4
Q

How are compartments formed

A

By extensions of deep fascia attaching to bones

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5
Q

Anterior compartment arm muscles

A

Biceps brachii (long head and short head)
Coracobrachialis
Brachialis

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6
Q

Major action of muscles of anterior compartment of arm

A

Flexion of forearm and some at glenohumeral joint

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7
Q

All muscles of anterior compartment innervated by

A

musculocutaneous nerve

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8
Q

Biceps brachii function and innervation

A

Flexor of shoulder and elbow, supinator of forearm

Musculocutaneous nerve

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9
Q

What happens as biceps tendon crosses elbow joint

A

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

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10
Q

bicipital aponeurosis

A

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

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11
Q

Bicipital aponeurosis provides a ____

A

secondary attachment

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12
Q

Coracobrachialis function and innervation

A

Flexes arm

Musculocutaneous

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13
Q

Brachials function and innervation

A

Flexes forearm

Musculocutaneous

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14
Q

Posterior compartment muscles

A

Triceps brachii (long, lateral, medial heads)

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15
Q

Major action of posterior compartment

A

Extension at the elbow and some at glenohumeral

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16
Q

All muscles of posterior compartment innervated by the

A

Radial nerve

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17
Q

Anconeus

A

also helps to extend elbow

Radial

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18
Q

Anterior compartment arteries

A

Brachial

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19
Q

Posterior compartment arteries

A 
Deep brachial (profunda brachii)
posterior humeral circumflex
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20
Q

Median nerve innervations in arm

A

None

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21
Q

Musculocutaneous nerve innervations of arm

A

Anterior flexor muscles in arm

Becomes cutaneous in forearm

22
Q

Ulnar nerve

A

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

23
Q

Radial nerve in arm

A

Extensor compartment of arm

All extensors of forearm as well

24
Q

What is radial nerve accompanied by?

A

Deep brachial artery

25
Q

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

A

Axillary nerve and posterior humeral circumflex artery

Axillary nerve wraps around surgical neck of humerus

26
Q

Mid-shaft fracture leaves what vulnerable and why?

A

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

27
Q

Fracture of medial epicondyle leaves what vulnerable and why?

A

Ulnar nerve because it lies posterior to the median epicondyle

28
Q

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

A

Median nerve because it lies anterior to distal end of humerus

29
Q

Cubital fossa bound by

A

Epicondyles
Pronator teres
Brachioradialis

30
Q

Bicipital aponeurosis

A

Extension of biceps tendon…roof of cubital fossa

31
Q

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

A

Tendon of biceps
Brachial artery
Median nerve

32
Q

Which vein does bicipital aponeurosis protect?

A

Median cubital vein

33
Q

Components of forearm

A

Posterior and anterior

34
Q

Antebrachial fascia

A

Deep fascia that encloses both compartment muscles

35
Q

What is proximally attached to antebrachial fascia?

A

Forearm muscles

36
Q

What separates forearm posterior and anterior

A

Interosseus membrane holding together radius and ulna

37
Q

Which forearm bone has intermuscular septa and which doesn’t

A

Radius

Ulna is subcutaneous the entire way down

38
Q

Layers of anterior compartment of forearm and how separated?

A

Deep and superficial

Fascial cleft

39
Q

Majority of anterior forearm muscles arise from

A

Medial epicondyle

40
Q

Major action of anterior forearm

A

At writse…some flexing of forearm

41
Q

Muscles of superficial layer of anterior forearm

A 
Pronator teres
Flexor carpi radialis 
Palmaris Longus
Flexor carpi Ulnaris 
Flexor digitorum superficialis
42
Q

Muscles of deep layer of anterior forearm

A

Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus

43
Q

Innervation of anterior compartment of forearm

A

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

44
Q

Pronator teres function and innervation

A

Pronates and flexes the forearm

Median nerve

45
Q

Flexor carpi radialis function and innervation

A

Flexes and abducts the hand

Median nerve

46
Q

Palmaris longus function and innervation

A

85% of people
Flexes hand
Median nerve

47
Q

Flexor carpi ulnaris function and innervation

A

Flexes and adducts hand

Ulnar nerve

48
Q

Flexor digitorum superficiales function and innervation

A

Flexes IP joint (and MCP joint and wrist)

Median nerve

49
Q

Flexor digitorum profundus function and innervation

A

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

50
Q

Flexor pollicis longus function and innervation

A

Flexes IP joint (and MCP and wrist)

Median nerve

51
Q

Pronator quadratus function and innervation

A

Pronates forearm

Median nerve

Anatomy and Radiology - Test 1 (21 decks)

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