Scapular Region and Posterior Arm Picture Cards Flashcards Preview

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Flashcards in Scapular Region and Posterior Arm Picture Cards Deck (30):
1

1. Axillary artery

2. Deep brachial artery

3. Brachial artery

4 and 5. Ulnar collateral arteries

6. Ulnar artery

7. Radial artery

2

What nerves are these indicated in red?

The subscapular nerves

1. Upper

2. Middle (Thoracodorsal)

3. Lower

3

What are these nerves indicated in red?

1. Dorsal scapular nerve

2. Suprascapular nerve

3. Long thoracic nerve (C5-C7/8 roots)

4

1. Trapezius

2. Deltoid

3. Latissimus dorsi

5

Thoracolumbar fascia

6

Name the muscle, origin, insertion, action, and innervation.

Latissimus dorsi. Originates on the spinous processes of the inferior 6 thoracic vertebrae and thoracolumbar fascia. Inserts on the floor of the intertubercular groove of the humerus. Extends, adducts, and medially rotates the humerus. Supplied by the thoracodorsal nerve (middle subscapular nerve)

7

Name the muscle and the one immediately superior to it, origin, insertion, action, and innervation.

Rhomboid major, minor is above it. Originates on spinous processes of C7-T5 vertebrae and minor inserts on the medial end of the scapular spine while major inserts on the medial border of the scapula inferior to the spine. Retracts and rotates the scapula inferiorly. Supplied by dorsal scapular nerve.

8

Name the muscle, origin, insertion, action, and innervation.

 

Deltoid. It originates on the lateral third of the anterior clavicle, the lateral border of the acromion and the lower lip of the scapular spine. It inserts on the V shaped deltoid tuberosity half way down the lateral aspect of the shaft of humerus. The middle part of the muscle help to abduct the arm, the anterior part help to flex the arm, and the posterior part helps to extend the arm. Innervated by the axillary nerve.

9

Name the muscle, origin, insertion, action, and innervation.

Infraspinatus. Originates at the infraspinatous fossa of the scapula and inserts on the middle facet of the greater tuberosity of the humerus. Action is to laterally rotate the humerus. Supplied by the suprascapular nerve.

10

Name the muscle, origin, insertion, action, and innervation.

Teres minor. Originates on the upper two-thirds of the lateral scapular border and inserts on the inferior part of the greater tuberosity of the humerus. It adducts and laterally rotates the humerus. Supplied by the axillary nerve.

11

Name the muscle, origin, insertion, action, and innervation.

Supraspinatus. Originates on the supraspinatous fossa of the scapula and inserts on the upper facet of the greater tuberosity of the humerus. Action is to initiate abduction of the arm to 15 degrees. Supplied by the suprascapular nerve.

12

Name the muscle, origin, insertion, action, and innervation.

Subscapularis. Arises from the medial two-thirds of the ventral surface of the scapula, and inserts on the lesser tuberosity of the humerus. Acts to medially rotate and adduct the humerus. Supplied by both subscapular nerves (upper and lower subscapular nerves).

13

Name the muscle, origin, insertion, action, and innervation.

Teres major. Originates on the lower third of the lateral border of the scapula and inserts on the medial lip of the intertubercular groove on the humerus. Action is to extend, adduct, and medially rotate the humerus. Supplied by the lower subscapular nerve.

14

Name the muscles that attach to these three insertions.

1. Teres major

2. Latissimus dorsi

3. Pectoralis major

15

1. Inferior glenohumeral ligament

2. Superior glenohumeral ligament

16

Name these landmarks and also name what structures are associated with them.

1. Deltoid tuberosity - insertion for the deltoid.

2. Spiral groove - where the radial nerve and deep brachial artery run down the humerus.

17

Name the muscle, origin, insertion, action, and innervation.

Triceps (long head). It arises from a tendon attached to the infraglenoid tubercle of the scapula and the muscle converges on the common tendon, which inserts on the upper surface of the olecranon. The long head supports the inferior aspect of the shoulder joint capsule when the arm is abducted. Supplied by the radial nerve, which has a separate branch to each head of the triceps.

18

Circumflex scapular artery (a branch of the subscapular artery)

19

Name the muscle, origin, insertion, action, and innervation.

 

Biceps (short head). Proximal attachment is the coracoid process, distal attachment is the common tendon of the biceps which attaches to the posterior aspect of the radial tuberosity. Action is to flex and supinate the arm. Supplied by musculocutaneous nerve.

20

Name the muscle, origin, insertion, action, and innervation.

Biceps (long head). Proximal attachment is the superior glenoid rim/labrum (the tendon runs through the intertubercular groove and is kept in place by the transverse humeral ligament) and distally attaches to the posterior aspect of the radial tuberosity. Flexes and supinates the arm. Musculocutaneous nerve innervation.

21

Name the muscle, origin, insertion, action, and innervation.

Brachialis. It arises from the anterior surface of the distal half of the humerus and attaches distally on the anterior surface of the coracoid process of the ulna. Action is to flex the elbow (in either supinated OR pronated position). Supplied by the Musculocutaneous nerve, with a small part of the lateral aspect of the muscle supplied by the radial nerve.

22

Name the muscle, origin, insertion, action, and innervation.

Coracobrachialis. Originates from the tip of the coracoid process medial to the short head of the biceps and distally attaches to the medial aspect of the mid shaft of the humerus. Supplied by musculocutaneous nerve. Action is arm flexion.

23

Name which muscles attach to these locations.

1. Coracobrachialis

2. Brachialis

24

Which muscle attaches here? What is the bony prominence called?

Biceps brachii (distal attachment). It is the radial tuberosity.

25

Name the structure in green and the tendon that runs through it.

Transverse humeral ligament with long head biceps tendon running through it.

26

Musculocutaneous nerve

27

Do it.

 

1. Axillary nerve (C5, C6)

2. Radial nerve (C5, C6)

3. Lateral cutaneous nerve of forearm (C5. C6)

4. Median nerve (C6-C8)

5. Ulnar nerve (C8, T1)

6. Medial cutaneous nerve of forearm (T1)

7. Medial cutaneous nerve of the arm (T1)

8. Intercostobrachial (T2)

9. Supraclavicular nerves (C3, C4)

10. Radial n. superficial branch (C6-C8)

28

Name the muscle, origin, insertion, action, and innervation.

Anconeus. Proximal attachment is the lateral epicondyle of the humerus and distal attachment is the lateral olecranon up to the proximal third of the posterolateral ulna. Assists in elbow extension. Supplied by radial nerve.

29

1. Olecranon

2. Head of the radius

3. Lateral epicondyle of humerus

4. Trochlear notch of the ulna

30

Name the spaces as depicted by the blue and green triangles and red square. Also name the structures that define these spaces and name the structures as noted by numbers 1-3.

The blue triangle is the medial triangular space. Its boundaries are the teres minor, teres major, and long head of the triceps. The structure in it is the (1) circumflex branch of the supscapular artery.

The green triangle is the lateral triangular space. Its boundaries are the long and lateral heads of the triceps and the teres major.

The red square is the quandrangular space. Its boundaries are the long and lateral heads of the triceps and the teres major and minor. (2) is the axillary nerve, (3) is the posterior circumflex humeral artery.