What are the two main portions of the pectoralis major muscle?
082 The Origin, Insertion, and Action of Pectoralis Major

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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Clavicular and Sternocostal
Sternocostal and Biceps
Sternal and Trapezius
Clavicular and Deltoid
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Where does the clavicular head of the pectoralis major originate?
Lateral half of the clavicle
Medial half of the clavicle
Entire clavicle
Sternum
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which part of the body does the sternocostal head of the pectoralis major attach to?
Medial half of the clavicle
Lower 6 ribs
Upper 6 costal cartilages
Entire sternum
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Where does the pectoralis major muscle insert?
Lesser tubercle of the humerus
Greater tubercle of the humerus
Medial epicondyle of the humerus
Olecranon of the ulna
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What action is performed by the clavicular head of the pectoralis major?
Flexion of the humerus
Abduction of the humerus
Lateral rotation of the humerus
Extension of the humerus
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary action of the entire pectoralis major muscle?
Extension of the humerus
Lateral rotation of the humerus
Adduction of the humerus
Abduction of the humerus
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which action is NOT performed by the pectoralis major?
Medial rotation of the humerus
Flexion of the humerus
Extension of the humerus
Pronation of the forearm
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