Chest & Abdominal Wall Muscles

Which muscle is identified as letter a in the graphic?

• External Oblique
• Rectus Abdominis
• Internal Oblique
• Transverse Abdominis 

Which muscle is identified as letter b in the graphic?

• External Oblique
• Rectus Abdominis
• Internal Oblique
• Transverse Abdominis 

Which muscle is identified as letter c in the graphic?

• External Oblique
• Rectus Abdominis
• Internal Oblique
• Transverse Abdominis 

Which muscle is identified as letter d in the graphic?

• External Oblique
• Rectus Abdominis
• Internal Oblique
• Transverse Abdominis 

Which set of abdominal muscles are the deepest? 

• External Oblique
• Internal Oblique
• Rectus Abdominis
• Transverse Abdominis

These abdominal muscles are located on the anterior side of the abdominal wall, and are commonly refereed to as the "six pack."

• External Oblique
• Internal Oblique
• Rectus Abdominis
• Transverse Abdominis

This muscle is a large fan shaped muscle that covers the front of the chest. 

• Deltoid
• Pectoralis Major
• Latissimus Dorsi 
• Transverse Abdominis

This is the broadest muscle in the back. Its primary function is adduction of the arms. However, it also works in extension and rotation of the arms.

• Deltoid
• Pectoralis Major
• Latissimus Dorsi 
• Trapezius

The coracobrachialis originates on the coracoid process of the scapula and inserts on the

• rotator cuff

• humerus

• radius

• ulna

The arrow is pointing to the

• trapezius

• pectoralis major

• pectoralis minor

• infraspinatus