Anatomy Exam 3 Study Questions

What is the muscle located on the lateral, superficial shoulder?

• Deltoid

• Biceps

• Triceps

• Pectoralis

What is the action of the deltoid?

• Abducts the arm past 15 degrees

• Flex the arm past 15 degrees

• Extend the arm past 15 degrees

• Rotates the arm 15 degrees

What is the origin of the deltoid?

• medial third of the clavicle, acromion, and spine of the scapula
• proximal end of the humerus
• distal end of the humerus
• lateral third of the clavicle, acromion, and spine of the scapula

What is the insertion of the deltoid?

• deltoid ligament of the ankle
• deltoid tuberosity of the humerus
• deltoid muscle of the thigh
• deltoid process of the scapula

What is the innervation of the deltoid?

• ulnar nerve
• radial nerve
• axillary nerve C5, C6

• median nerve

What are the muscles of the posterior scapular region?

• pectoralis minor, serratus anterior, subclavius
• biceps brachii, triceps brachii, brachialis
• deltoids, pectoralis major, latissimus dorsi
• supraspinatus, infraspinatus, teres minor and major, subscapularis

What is the origin of the supraspinatus?

• supraspinous fossa

• supraspinous process of the scapula
• subscapular fossa of the scapula
• infraspinous fossa of the scapula

What is the insertion of the supraspinatus?

• coracoid process of the scapula
• lesser tubercle of the humerus
• greater tubercle of the humerus
• acromion process of the scapula

What is the action of the supraspinatus?

• rotate the arm
• abducts the arm the first 15 degrees

• flex the arm
• extend the arm

What is the innervation of the supraspinatus?

• musculocutaneous nerve
• radial nerve
• axillary nerve
• suprascapular nerve C5 C6