3.1 Upper Limb Anatomy Flashcards

1
Q

What nerve is most likely damaged if a break occurs at the surgical neck?

A

Axillary nerve

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2
Q

What nerve is most likely damaged if a break occurs at the radial groove?

A

Radial nerve

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3
Q

What nerve is most likely damaged if a break occurs at the distal humerus?

A

Median nerve

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4
Q

What nerve is most likely damaged if a break occurs at the medial epicondyle?

A

Ulnar nerve

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5
Q

What are the Trapezius attachment points?

A

C-spine, T-spine, scapular spine, and clavicle

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6
Q

What are the actions of the Trapezius?

A

Scapular rotation and retraction

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7
Q

Action of the Rhomboids?

A

Scapular retraction

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8
Q

Action of the Levator Scapula?

A

Scapular elevation

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9
Q

Attachment of the Serratus Anterior?

A

Medial border of scapula to ribs

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10
Q

Action of Serratus Anterior?

A

Scapular protraction

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11
Q

Innervation of Serraturs Anterior?

A

Long thoracic nerve

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12
Q

Injury to the Long thoracic nerve causes what?

A

Scapular winging

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13
Q

Deltoid Attachment?

A

Scapular spin, clavicle, deltoid tuberosity

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14
Q

Actions of Deltoid?

A

Abduction, flexion, extension

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15
Q

Innervation of the deltoid?

A

Axillary Nerve

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16
Q

What are the rotator cuff muscles?

A

1) Supraspinatus
2) Infraspinatus
3) Teres minor
4) Subscapularis

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17
Q

Which muscle of the posterior arm crosses both shoulder and elbow joints?

A

Long head of the triceps brachii

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18
Q

Boundaries of the cubital fossa?

A

1) Line between the lateral and medial epicondyles
2) Pronator tores
3) Brachialradiallis

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19
Q

Contents of the cubital fossa?

A

1) Radial Nerve
2) Biceps Tendon
3) Brachial Artery
4) Medial Nerve

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20
Q

Which subcutaneous vein travels along the lateral side of the arm?

A

Cephalic vein

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21
Q

Which subcutaneous vein travels along the medial side of the arm?

A

Basilic vein

22
Q

Action of Pectoralis Major?

A

Adducts and medially rotates humerus; draws scapula anteriorly and inferiorly

23
Q

Innervation of the pectorals major?

A

Lateral and medial pectoral nerves

24
Q

Pectoralis minor Innervation?

A

Medial pectoral nerve

25
Q

Action pectoralis minor?

A

Stabilizes scapula by drawing it inferiorly and anteriorly against thoracic wall

26
Q

Serratus anterior action?

A

Protrracts scapula and holds it agains thoracic wall; rotates scapula

27
Q

Serratus anterior innervation?

A

Long thoracic nerve

28
Q

Trapezius innervation?

A

Spinal accessory nerve and C3/C4 spinal nerves

29
Q

Trapezius Action?

A

Elevates, depresses, and retracts scapula. Rotate glenoid cavity superiorly

30
Q

Latissimus dorsi innervation?

A

Thoracodorsal nerve

31
Q

Latissimus dorsi actions?

A

Extends adducts and medially rotates humerus

32
Q

Levator Scapulae action?

A

Elevates scapula and rotates glenoid cavity inferiorly

33
Q

Levator Scapulae innervation?

A

Dorsal scapular nerve and cervical nerves

34
Q

Rhomboid minor and major innervation?

A

Dorsal scapular nerve

35
Q

Rhomboid minor and major action?

A

Retract scapula and rotate glenoid cavity inferiorly

36
Q

Deltoid Innervation?

A

Axillary nerve

37
Q

Supraspinatus innervation?

A

Suprascapular nerve

38
Q

Action of supraspinatus?

A

initiates and assists deltoid in abduction of arm and acts with rotator cuff muscles

39
Q

Infraspinatus innervation?

A

suprascapular nerve

40
Q

Action of infraspinatus?

A

Latterally rotate arm and acts with rotator cuff muscles

41
Q

Teres minor action?

A

Laterally rotates arm and acts with rotator cuff muscles

42
Q

Teres minor innervation?

A

Axillary nerve

43
Q

Teres major action?

A

Adducts and medially rotates arm

44
Q

Teres major innervation?

A

lower sub scapular nerve

45
Q

Subscapularis action?

A

Medially rotates arm

46
Q

Biceps brachii action?

A

Supinates forearm and when it is supine flexes forearm, short head resists dislocation of shoulder.

47
Q

Biceps brachii innervation?

A

Musculocutaneous nerve

48
Q

Coracobrachialis action?

A

Helps flex and adduct arm and resists dislocation of shoulder.

49
Q

Coracobrachialis innervation?

A

Musculocutaneous nerve

50
Q

Triceps brachii innervation?

A

Radial nerve

51
Q

Triceps brachii action?

A

Extensor of forearm, log head resists dislocation of humerus, especially important during adduction.