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602 HSF > 10. Posterior Shoulder > Flashcards

10. Posterior Shoulder Flashcards

1
Q

The medial part of the clavicle is called _ while the lateral end is called _

A

sternal facet

acromial end

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2
Q

The _ is the area where the deltoid muscle attaches

A

deltoid tubercle

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3
Q

T/F The lateral edge of the scapula is called the medial border

A

False (called the axillary border)

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4
Q

Name the 2 fossa on the posterior border of shoulder

A

supraspinous fossa

infraspinous fossa

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5
Q

The insertion point of the pectoralis minor is on the _

A

coracoid process

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6
Q

The lesser tubercle of the humerus is _ to the intertubercular groove

A

medial

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7
Q

The point of insertion for the deltoid is the _

A

deltoid tuberosity

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8
Q

The _ is also considered the funny bone

A

medial epicondyle

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9
Q

The fossa on the posterior part of the humerus is the _

A

olecranon fossa

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10
Q

The innervations of shoulder muscles are typically _ to the muscle

A

deep

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11
Q

The 3 origin points for the deltoid muscle are _

A

Clavicle
spine of scapula
acromion

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12
Q

The 3 actions of the deltoid are to _

A

flex/medially rotate
abduct humerus
extend/laterally rotate

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13
Q

The _ and _ are innervated by the axillary nerve

A

deltoid and teres minor

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14
Q

What is the origin of the supraspinatus muscle?

A

supraspinous fossa

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15
Q

The supraspinatus inserts onto the _

A

greater tubercle

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16
Q

What are the 2 actions of the supraspinatus?

A

Stabilize shoulder

Abducts humerus

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17
Q

The _ is the primary abductor of the arm until around 15 degrees, then the _ takes over

A

Supraspinatus

Deltoid

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18
Q

T/F The supraspinatus is innervated by the infrascapular nerve

A

False (suprascapular nerve)

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19
Q

Name the origin and insertion of the infraspinatus muscle

A

Infraspinous fossa

greater tubercle

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20
Q

Name the 2 actions of the infraspinatus

A

stabilize shoulder

laterally rotate humerus

21
Q

The suprascapular nerve innervates _ and _

A

Supraspinatus

Infraspinatus

22
Q

Teres minor inserts on the _

A

greater tubercle

23
Q

What is the origin of the teres minor?

A

Dorsal axillary border

24
Q

What are the 2 actions of teres minor?

A

Stabilize shoulder

Laterally rotate humerus

25
Q

Teres major inserts on the _

A

medial lip of the intertubercular sulcus

26
Q

T/F Teres major insertion is anterior to latissimus dorsi

A

False (posterior)

27
Q

List the 3 actions of teres major

A

medially rotate humerus
adduct humerus
extend humerus

28
Q

Teres major is innervated by _

A

lower subscapular nerve

29
Q

Long head of the triceps brachii muscle originates on the _ and inserts on the _

A

infraglenoid tubercle

olecranon process of ulna

30
Q

List the 3 actions of the long head of TB

A

Extend humerus
adducts humerus
extend forearm at elbow

31
Q

What innervates the long head of TB?

A

radial nerve

32
Q

What is the origin of the subscapularis?

A

ventral surface of scapula

33
Q

The subscapularis inserts on the _

A

lesser tubercle

34
Q

List the 3 actions of the subscapularis

A

stabilize shoulder joint
medially rotate humerus
adduct humerus

35
Q

The subscapularis is innervated by _

A

upper and lower subscapular nerve

36
Q

What are the muscles of the rotator cuff?

A

Subscapularis
infraspinatus
supraspinatus
teres minor

37
Q

What muscles and structures create the quadrangular space?

A

Humerus
Long head of TB
Teres minor
Teres major

38
Q

What creates the triangular interval?

A

Humerus
long head of TB
Teres major

39
Q

What creates the triangular space?

A

Long head of TB
Teres major
teres minor

40
Q

What nerve and artery pass through the quadrangular space?

A

Axillary nerve

Posterior humeral circumflex artery

41
Q

What nerve and artery passes through the triangular space?

A

Circumflex scapular artery

No nerve runs through

42
Q

What nerve and artery passes through the triangular interval?

A

Radial nerve

Profunda (deep) brachii artery

43
Q

What is the greatest ROM in the body?

A

Glenohumeral joint

44
Q

_ in the shoulder minimize friction

A

bursae

45
Q

The glenohumeral joint is a type of _ joint

A

synovial

46
Q

The joint capsule of the GH joint is composed of _ and _

A

fibrous and synovial joint capsule

47
Q

Bursitis results from _

A

calcium deposits on bursae floor

48
Q

_ is a partial or complete tear of the cartilaginous ring surrounding the glenoid fossa

A

torn labrum

602 HSF (19 decks)

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