Major Superficial Muscles

Primary superficial muscles of the human body viewed from the front.

• Trapezius: Large triangular muscle spanning the upper back and neck, visible above the shoulders from the front.
• Deltoid: Rounded, triangular muscle that caps the shoulder joint.
• Pectoralis major: Broad fan-shaped muscle covering the upper anterior chest.
• Biceps brachii: Two-headed muscle on the front of the upper arm that flexes the elbow.
• Sartorius: Long, thin ribbon-like muscle crossing diagonally from the outer hip to the inner knee.
• Quadriceps femoris: Large group of four muscles covering the front and sides of the thigh that extends the knee.
• Gastrocnemius: Superficial calf muscle bulging on the back and sides of the lower leg.
• soleus: soleus