Trunk Muscle Quiz

Which muscle is in the upper chest and connects the sternum to the proximal humerus?

• pectoralis major

• external oblique

• rectus abdominus

• internal oblique

Which muscle allows for adduction and flexion of the arm?

• trapezius

• pectoralis major

• external oblique

• rectus abdominus

Which muscle's origin is the clavicle, sternum, and costal cartilage of upper ribs?

• external oblique

• internal oblique

• pectoralis major

• trapezius

Which muscle's insertion is the humerus?

• external oblique

• internal oblique

• pectoralis major

• rectus abdominus

Which muscle is front of the abdomen and connects the lower 8 ribs to the anterior iliac crest?

• rectus abdominus

• external oblique

• internal oblique

• trapezius

Which muscle is in the front of the abdomen beneath the external oblique?

• pectoralis major

• trapezius

• internal oblique

• rectus abdominus

Which muscles compress the abdomen?

• external oblique

• rectus abdominus

• internal oblique

• transverse abdominis

Which muscle's origin is the inferior surfaces of the lower ribs?

• external oblique

• pectoralis major

• rectus abdominus

• internal oblique

Which muscle's origin is the fascia and iliac crest?

• pectoralis major

• trapezius

• external oblique

• internal oblique

Which muscle's insertion is the linea alba?

• pectoralis major

• external oblique

• internal oblique

• trapezius