QuestionsShoulder Region - Anterior

The highlighted muscle is called1 The sternal head of pectoralis major

2 The sternal head of pectoralis minor

3 The clavicular head of pectoralis major

4 The clavicular head of pectoralis minor

5 Latissimus dorsi

The highlighted muscle is called1 The sternal head of pectoralis major T

2 The sternal head of pectoralis minor F

3 The clavicular head of pectoralis major F

4 The clavicular head of pectoralis minor F

5 Latissimus dorsi F

The Axillary (circumflex) nerve1 arises from the medial cord of the brachial plexus

2 innervates the deltoid and teres major muscles

3 has no cutaneous branches

4 supplies supraspinatus

5 is intimately related to the humerus at the level of the surgical neck

The axillary nerve arises from the posterior cord of the brachial plexus, not the medial cord.The axillary nerve supplies deltoid and teres minor, not teres major!The axillary nerve supplies the skin on the upper, lateral aspect of the arm (the so-called ‘regimental badge area’)Supraspinatus is supplied by the suprascapular nerve, not axillary nerve.The axillary nerve is in contact with the humeral periosteum on the posterolateral aspect of the surgical neck.

The Axillary (circumflex) nerve1 arises from the medial cord of the brachial plexus F

2 innervates the deltoid and teres major muscles F

3 has no cutaneous branches F

4 supplies supraspinatus F

5 is intimately related to the humerus at the level of the surgical neck

T

The Pectoralis minor muscle attaches to the 1 Acromion

2 Coracoid

3 Manubrium

4 Clavicle

5 Spine of scapula

The Pectoralis minor muscle attaches to the 1 Acromion F

2 Coracoid T

3 Manubrium F

4 Clavicle F

5 Spine of scapula F

This muscle is supplied by1 Lateral pectoral nerve

2 Superior pectoral nerve

3 Posterior pectoral nerve

4 Anterior pectoral nerve

5 Medial pectoral nerve

This muscle is supplied by1 Lateral pectoral nerve T

2 Superior pectoral nerve F

3 Posterior pectoral nerve F

4 Anterior pectoral nerve F

5 Medial pectoral nerve T

This is Pectoralis Major, it is supplied by the medial and lateral pectoral nerves.The superior, posterior and anterior pectoral nerves do not exist

The Deltoid muscle1 adducts the arm at the glenohumeral (shoulder) joint

2 flexes the arm at the glenohumeral joint

3 is supplied by the axillary nerve

4 is multipennate

5 is innervated by the lateral cord of the brachial plexus

Deltoid is a powerful abductor, not adductor, of the glenohumeral joint.The anterior fibres of deltoid are indeed flexors of the glenohumeral joint, while the posterior fibres of deltoid are extensors of the glenohumeral joint.The axillary nerve which supplies deltoid is a terminal branch of the posterior cord of the brachial plexus, not lateral cord.]

The Deltoid muscle1 adducts the arm at the glenohumeral (shoulder) joint F

2 flexes the arm at the glenohumeral joint T

3 is supplied by the axillary nerve T

4 is multipennate T

5 is innervated by the lateral cord of the brachial plexus F

The Deltoid muscle attaches to the 1 Acromion

2 Coracoid

3 Manubrium

4 Clavicle

5 Spine of scapula

The Deltoid muscle attaches to the 1 Acromion T

2 Coracoid F

3 Manubrium F

4 Clavicle T

5 Spine of scapula T

The Pectoralis major muscle1 arises in part from the upper six or so costal

cartilages

2 is innervated by the medial and lateral pectoral nerves.

3 is attached to the lesser tuberosity of the humerus.

4 lies deep to the clavipectoral fascia.

5 is pierced by the anterior intercostal arteries

The medial and lateral pectoral nerves are respectively from the medial and lateral cords of the brachial plexus, and together they innervate all of pectoralis major)The humeral attachment of pectoralis major is to the lateral lip of the intertubercular groove, not to the lesser tuberosityThe anterior intercostals arteries are branches of the internal thoracic (mammary) artery. They pierce the anterior ends of the intercostal spaces before piercing pectoralis major to reach the overlying skin.

The Pectoralis major muscle1 arises in part from the upper six or so costal

cartilagesT

2 is innervated by the medial and lateral pectoral nerves.

T

3 is attached to the lesser tuberosity of the humerus.

F

4 lies deep to the clavipectoral fascia. F

5 is pierced by the anterior intercostal arteries T

This muscle1 Externally rotates the arm

2 Extends the arm

3 Adducts the arm

4 Internally rotates the arm

5 Forward elevates the arm

This muscle1 Externally rotates the arm F

2 Extends the arm F

3 Adducts the arm T

4 Internally rotates the arm F

5 Forward elevates the arm F

This is Pectoralis Major, it adducts the arm

This muscle attaches to the following structures1 Acromion of the Scapula

2 Manubrium

3 Coracoid of the Scapula

4 Greater Tuberosity of the Humerus

5 Bicipital groove of the Humerus

This muscle attaches to the following structures1 Acromion of the Scapula F

2 Manubrium T

3 Coracoid of the Scapula F

4 Greater Tuberosity of the Humerus F

5 Bicipital groove of the Humerus T

Pectoralis minor is innervated by1 Lateral pectoral nerve

2 Superior pectoral nerve

3 Posterior pectoral nerve

4 Anterior pectoral nerve

5 Medial pectoral nerve

Pectoralis minor is innervated by1 Lateral pectoral nerve T

2 Superior pectoral nerve F

3 Posterior pectoral nerve F

4 Anterior pectoral nerve F

5 Medial pectoral nerve T

The medial and lateral pectoral nerves are respectively from the medial and lateral cords of the brachial plexus, and together they innervate all of pectoralis major and pectoralis minor