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Advanced Anatomy > Lecture 3: Shoulder & Scapular Region > Flashcards

Lecture 3: Shoulder & Scapular Region Flashcards

1
Q

What is the pectoral girdle?

A

Scapula + Clavicle
-Holds upper limb into place

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2
Q

“arm bone” in brachial region

A

Humerus

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3
Q

List the three joints of the shoulder

A
  1. Sternoclavicular
  2. Acromioclavicular
  3. Glenohumeral
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4
Q

T/F: The shoulder joint is both stable and very mobile

A

F: Very mobile, however it is not very stabile. (it is a trade off)

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5
Q

The sternoclavicular (SC) joint is a _____________ joint.

A

Synovial joint

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6
Q

The sternoclavicular (SC) joint is between what 2 structures?

A

Clavicle and Manubrium of sternum

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7
Q

Is the sternoclavicular (SC) joint a stable joint?

A

Yes - it rarely dislocates

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8
Q

T/F: The sternoclavicular (SC) joint is not reinforced by many ligaments

A

False; it is reinforced by many ligaments

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9
Q

What is the synovial joint between the acromion and lateral end of clavicle?

A

Acromioclavicular joint

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10
Q

The Acromioclavicular joint is a synovial joint. It is strengthened superiorly by the __________

A

Acromioclavicular ligament

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11
Q

Acromioclavicular joint - The lateral part of the clavicle attached to the coracoid process by the

A

coracoclavicular ligament

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12
Q

What is shoulder seperation?

A

Dislocation of the Acromioclavicular joint

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13
Q

What is the most mobile (and injured) joint in the body?

A

Glenohumeral Joint

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14
Q

The glenohumeral joint is a ___________________ synovial joint.

A

Ball-in-socket

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15
Q

The stability of the glenohumeral joint mainly comes from?

A

The rotator cuff muscles (as opposed to bones and ligaments)

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16
Q

Skin of the POSTERIOR shoulder is innervated by…

A

Posterior Rami

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17
Q

Skin of the LATERAL and ANTERIOR shoulder is innervated by…

A

Anterior rami

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18
Q

Shoulder muscles are innervated by…

A

Anterior Rami

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19
Q

What is the innervation of the trapezius?

A

CN XI - Accessory

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20
Q

What is the action of the trapezius?

A

Elevate, retract, & depress scapula

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21
Q

What is the innervation of the Latissimus Dorsi?

A

Thoracodorsal N

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22
Q

What is the action of the Latissimus Dorsi?

A

Extends and ADducts humerus

23
Q

What is the innervation of the levator scapulae?

A

Dorsal scapular N

24
Q

What is the function of the levator scapulae?

A

Elevate scapula

25
Q

What is the innervation of rhomboid mjr and minor?

A

Dorsal scapular N

26
Q

What is the function of rhomboid mjr and minor?

A

Elevate, retract, and inferiorly rotate scapula

27
Q

Muscles that originate and insert on the upper limb are ________ muscles of the shoulder.

A

Intrinsic

28
Q

The ______________ is the primary ABductor of the upper limb

A

Deltoid

29
Q

What is the innervation of the deltoid?

A

Axillary N

30
Q

The __________________ extends, ADducts, & medially rotates the arm.

A

Teres Major

31
Q

What is the innervation of the Teres major?

A

Lower Subscapular N.

32
Q

What are the rotator cuff muscles [4]?

A

1.) Subscapularis
2.) Supraspinatus
3.) Infraspinatus
4.) Teres Minor

33
Q

What is the action of the subscapularis?

A

Medially rotate arm

34
Q

What is the innervation of the subscapularis?

A

Subscapular nn.

35
Q

What is the action of the supraspinatus?

A

ABducts arm

36
Q

What is the innervation of the supraspinatus?

A

Suprascapular n.

37
Q

What is the action of the infraspinatus?

A

ADducts & laterally rotates arm

38
Q

What is the innervation of the infraspinatus?

A

Suprascapular n.

39
Q

What is the action of the Teres Minor?

A

Adduct & Laterally rotates arm

40
Q

What is the innervation of Teres Minor?

A

Axillary n.

41
Q

What structures travels through the triangular space?

A

Circumflex scapular A.

42
Q

What structures travel through the triceps hiatus?

A

Profunda brachii a. & Radial N.

43
Q

What structures travel through the quadrangular space?

A

Posterior circumflex humeral a. & axillary n.

44
Q

What are the boundaries of the triangular space?

A

Teres major & minor

45
Q

What are the boundaries of the triceps hiatus?

A

Triceps brachii, humerus, & teres major

46
Q

What are the boundaries of the quadrangular space?

A

Teres major & minor, triceps brachii, & humerus

47
Q

What is the main blood supply to the upper limb?

A

Subclavian artery

48
Q

The subclavian changes its name to ________ at the lateral boarder of the 1st rib

A

Axillary artery

49
Q

The axillary artery changes its name to __________ at the inferior border of teres major

A

Brachial Artery

50
Q

T/F: Deep veins have the same names as arteries in the upper limb.

A

True

51
Q

Which superficial vein is on the thumb side?

A

Cephalic

52
Q

What superficial vein is on the pinky side?

A

Basilic

53
Q

Where is venipuncture done?

A

Median cubital vein

Advanced Anatomy (18 decks)

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