Chest Muscle Anatomy

What are the main muscles of the chest?

• pectoralis major and pectoralis minor

• deltoids and latissimus dorsi

• biceps and triceps

• quadriceps and hamstrings

What is the function of the pectoralis major muscle?

• The function of the pectoralis major muscle is breathing.

• The function of the pectoralis major muscle is arm movement.

• The function of the pectoralis major muscle is leg movement.

• The function of the pectoralis major muscle is digestion.

Describe the anatomy of the pectoralis minor muscle.

• The pectoralis minor muscle is a large, rectangular muscle located in the lower chest region.

• The pectoralis minor muscle is a long, cylindrical muscle located in the back region.

• The pectoralis minor muscle is a flat, circular muscle located in the abdominal region.

• The pectoralis minor muscle is a small, triangular muscle located in the upper chest region.

Name the different parts of the chest muscles.

• pectoralis minor, pectoralis major, pectoralis medius

• pectoralis major, pectoralis minor

• pectoralis maximus, pectoralis minor

• pectoralis major, pectoralis medius

Which muscle is responsible for adduction of the arm?

• triceps brachii

• biceps brachii

• deltoid

• pectoralis major

What is the primary function of the pectoralis minor muscle?

• Flex and adduct the shoulder

• Elevate and retract the scapula

• Stabilize and depress the scapula

• Rotate and abduct the shoulder

What is the origin and insertion of the pectoralis major muscle?

• Clavicle, sternum, cartilage of the ribs (origin); Humerus (insertion)

• Scapula, sternum, cartilage of the ribs (origin); Radius (insertion)

• Clavicle, sternum, cartilage of the ribs (origin); Tibia (insertion)

• Clavicle, sternum, cartilage of the ribs (origin); Femur (insertion)