Which of the following is not the anterior group of muscles of arm?___
A. Biceps brachii
B. Triceps brachii
C. Brachialis
D. Coracobrachialis
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The principal muscle of inspiration is ___
A. pectoralis major
B. pectoralis minor
C. diaphragm
D. intercostales interni
About the pectoralis major, which of the statement is wrong?___
A. It arises from the medial half of clavicle, sternum and upper six costal cartilages.
B. It is inserted into the crest of greater tubercle of humerus.
C. It can adduct, flex and medial rotate the arm.
D. When the arms are fixed, it draws the body downward.
About the intercostal muscles, which of the statements is right? ___
A. Intercostales externi elevate the ribs and help to inspirate.
B. Intercostales externi elevate the ribs and help to expirate.
C. Intercostales interni elevate the ribs and help to inspirate.
D. Intercostales interni elevate the ribs and help to expirate.
Which of the following can drop the ribs? ___
A. Serratus anterior
B. Intercostales externi
C. Diaphragm
D. Intercostales interni
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