Anatomy - shoulder/upper extremity Flashcards Preview

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Flashcards in Anatomy - shoulder/upper extremity Deck (16)
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1
Q

Origin and insertion of deltoid

A

O: Spine of scapula, acromion, lateral 1/3 of clavicle
I: deltoid tuberosity of humerus

2
Q

Action, innervation, and blood supply of deltoid

A

A: anterior portion- flexes and internally rotates arm. Middle portion - abducts arm beyond 15 degrees
posterior portion - extends and laterally rotates arm
I: Axillary nerve (C5, C6)
BS: posterior circumflex humeral artery

3
Q

Origin and insertion of supraspinatus

A

O: Supraspinous fossa of scapula and deep fascia
I: greater tubercle of humerus

4
Q

Action, innervation, and blood supply of supraspinatus

A

A: 1st 15% of abduction of arm
I: suprascapular n. (C4-C6)
BS: suprascapular a.

5
Q

Origin and insertion of infraspinatus

A

O: infraspinous fossa of scapula
I: greater tubercle of humerus

6
Q

Action, innervation, and blood supply of infraspinatus

A

A: external rotation of arm
I: suprascapular n. (C5-C6)
BS: suprascapular a.

7
Q

Origin and insertion of teres minor

A

O: posterolateral border of scapula
I: greater tubercle of humerus

8
Q

Action, innervation, and blood supply of teres minor

A

A: external rotation of arm
I: axillary n. (C5-C6)
BS: circumflex scapular a.

9
Q

Origin and insertion of subscapularis

A

O: subscapular fossa
I: lesser tubercle of humerus

10
Q

Action, innervation, and blood supply of subscapularis

A

A: holds humeral head to glenoid cavity, internally rotates arm, adducts arm
I: upper and lower subscapular n. (C5-C7)
BS: subscapular a./lateral thoracic artery

11
Q

Origin and insertion of teres major

A

O: posteroinferior angle of scapula
i: intertubercular sulcus of humerus

12
Q

Action, innervation, and blood supply of teres major

A

A: adducts and internally rotates arm
i: lower subscapular n. (C5-C6)
BS: circumflex scapular a.

13
Q

muscles of rotator cuff

A

Supraspinatus, infraspinatus, teres minor, subscapularis

14
Q

Borders of quadrangular space

A

Superiorly: inferior border of teres minor
Laterally: surgical neck of humerus
medially: lateral border of long head of triceps
inferiorly: superior border of teres major

15
Q

Borders of triangular space

A

Superiorly: inferior border of teres minor
Laterally: medial border of long head of triceps
inferiorly: superior border of teres major

16
Q

Army goes over the bridge and Navy goes under

A

Suprascapular Artery goes over Superior transverse scapular ligament and suprascapular Nerve goes under.