Clinical Anatomy 2 - Lab 2

The origin of the supraspinatus muscle is the _____.

The insertion point of the supraspinatus muscle is the (a)   .

• Greater tuberosity of the humerus
• Lesser tuberosity of the humerus
• Deltoid tuberosity of the humerus
• Medial epicondyle of the humerus

What action does the supraspinatus muscle perform?

• Draws humerus toward glenoid fossa

• Flexes and abducts the humerus

• Abducts the humerus

• Adducts the humerus and rotates it medially

True or False: The rotator cuff muscles prevent dislocation of the humerus throughout most of the arm's range of motion.

• True

• False

The origin of the infraspinatus muscle is the (a)   fossa of the scapula.

• Infraspinous
• Supraspinous
• Glenoid
• Subscapularis

The insertion point of the infraspinatus muscle is the (a)   .

• Greater tuberosity of the humerus
• Lesser tuberosity of the humerus
• Deltoid tuberosity of the humerus
• Medial epicondyle of the humerus

What is the action of the infraspinatus muscle?

• Draws humerus toward glenoid fossa

• Medially rotates humerus

• Laterally rotates humerus

• Pulls humerus away from glenoid fossa

The infraspinatus muscle refers pain to the deltoid region.

• True

• False

What is the origin of the Teres Minor muscle?

• Upper two-thirds of the dorsal surface of the axillary border of the scapula

• Lower two-thirds of the dorsal surface of the vertebral border of the scapula

• Upper two-thirds of the dorsal surface of the vertebral border of the scapula

• Lower two-thirds of the dorsal surface of the axillary border of the scapula

The insertion of the Teres Minor muscle is the (a)  

• Greater tuberosity of the humerus
• Medial border of the scapula
• Lesser tuberosity of the humerus
• Deltoid tuberosity of the humer