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SHB > Arm > Flashcards

Arm Flashcards

1
Q

What are the muscles located in the arm?

A

Triceps, biceps choracobrachialis, and brachialis

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2
Q

What are the muscles located in the arm?

A

Triceps, biceps choracobrachialis, and brachialis

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3
Q

What nerves innervate the arm?

A

Musculocutaneous and median nerve

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4
Q

The long head of the triceps and the long head of the biceps cross which joint(s)?

A

The shoulder and the elbow joint.

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5
Q

What are the dermatomes of the upper limbs?

A

C6: Lateral arm, forearm, and thumb
C7: Back of arm, back of forearm, and 2nd and 3rd digits
C8: Medial arm, forearm, and hypothenar

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6
Q

What are some distinguishing features of the median cubital vein?

A

It is usually very prominent and crosses over from the basilic side to the cephalic side

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7
Q

What muscle, located in the arm, sits across the bone and is really tight/close

A

The brachialis - the most powerful forearm flexor

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8
Q

What nerves innervate the arm?

A

Musculocutaneous and median nerve

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9
Q

The long head of the triceps and the long head of the biceps cross which joint(s)?

A

The shoulder and the elbow joint.

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10
Q

What are the dermatomes of the upper limbs?

A

C6: Lateral arm, forearm, and thumb
C7: Back of arm, back of forearm, and 2nd and 3rd digits
C8: Medial arm, forearm, and hypothenar

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11
Q

What are some distinguishing features of the median cubital vein?

A

It is usually very prominent and crosses over from the basilic side to the cephalic side

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12
Q

What muscle, located in the arm, sits across the bone and is really tight/close

A

The brachialis - the most powerful forearm flexor

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13
Q

What joint does the long head of the biceps go to?

A

The shoulder joint

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14
Q

Where do the long head and the short head of the bicep meet?

A

At the biceps tendon

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15
Q

What is the purpose of the bicipital aponeurosis?

A

To protect the median nerve; the veins sit on top of the aponeurosis

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16
Q

What is deep to the biceps?

A

The coracobrachialis

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17
Q

What is the big powerful flexor of the forearm?

A

The brachialis

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18
Q

What muscle in the arm is a powerful supinator?

A

The biceps

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19
Q

What muscles attach to the coracoid?

A

The pectoralis minor, the short head of the biceps, and the coracobrachialis

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20
Q

What are the muscles of the anterior arm?

A

The biceps, the brachialis, and the coracobrachialis

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21
Q

What nerve innervates the muscles of the anterior arm?

A

The musculocutaneous nerve

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22
Q

Where does the tendon of the long head of the bicep run?

A

It runs over the head of the humerus in a synovial sheath that follows the tendon as far as the surgical neck.

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23
Q

What holds the tendon of the long head of the biceps in place?

A

The tendon is held in place in the intertubercular groove by the transverse humeral ligament and the tendon of the pectoralis major

24
Q

What are the muscles of the posterior arm?

A

The tricep - the long, lateral, and medial head.

25
Q

What nerve innervates the muscles of the posterior arm?

A

The radial nerve

26
Q

What head of the triceps is the least active?

A

The long head

27
Q

What is the purpose of the long head of the triceps?

A

To aid primarily in extending the arm

28
Q

What is the purpose of the medial head of the tricep?

A

It is the workhorse of forearm extension

29
Q

What is the purpose of the lateral head of the triceps?

A

It functions primarily against active resistance

30
Q

Which head of the tricep is the strongest generator of force?

A

The lateral head

31
Q

What does the axillary artery continue to become?

A

The brachial artery

32
Q

What does the brachial artery divide into?

A

The radial and ulnar artery

33
Q

The brachial artery lies on what muscles?

A

The long head of the triceps, the coracobrachialis, and the brachialis

34
Q

What are the main branches of the brachial artery?

A

The deep brachial, the superior ulnar collateral, and the inferior ulnar collateral

35
Q

Where does the axillary artery turn into the brachial artery?

A

At the inferior border of the teres major muscle

36
Q

Where does the brachial artery terminate?

A

At the cubital fossa - where it divides into radial and ulnar arteries

37
Q

What are the major nerves associates with the brachial artery?

A

The radial, ulnar, and median nerve

38
Q

What are the veins associated with the brachial artery?

A

The basilic vein, and the 2 venae comitantes

39
Q

What nerves do not have branches in the arm?

A

The median and the ulnar nerve

40
Q

What nerve innervates the anterior compartment of the arm?

A

The musculocutaneous nerve

41
Q

What nerve innervates the posterior compartment of the arm?

A

The radial nerve

42
Q

Injury to the musculocutaneous nerve causes…

A

Loss of flexion in the elbow

43
Q

What does the musculocutaneous nerve continue as?

A

The lateral antebrachial cutaneous nerve

44
Q

Where does the radial nerve pass through?

A

The radial groove on the back of the humerus

45
Q

What does the radial nerve pierce?

A

The lateral intermuscular septum

46
Q

What does the radial nerve divide into?

A

The superficial and deep branches

47
Q

Where does the ulanr nerve pass through?

A

It is medial to the axillary and brachial arteries

48
Q

What does the ulnar nerve pierce?

A

The medial intermuscular septum

49
Q

What does the ulnar nerve run with?

A

The superior ulnar collateral artery

50
Q

Injury to the ulnar nerve causes…

A

Paraesthesia and a shock-like feeling in the hand and forearm

51
Q

Where does the median nerve pass through?

A

The cubital fossa, deep to the bicipital aponeurosis

52
Q

What is the cubital fossa?

A

It is a trinagular shaped, fat filled depression of the anterior elbow

53
Q

What are the contents of the cubital fossa?

A

It contains the terminal part of the brachial artery (that branches into the ulnar and radial arteries), deep veins in the area, the tendon of the biceps brachii, the median nerve, and the radial nerve

54
Q

What is in the floor of the cubital fossa?

A

The brachialis and the supinator muscle

55
Q

What is in the roof of the cubital fossa?

A

Brachial and antebrachial fascia, reinforced nu the bicipital aponeurosis

SHB (11 decks)

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