The principal parts of the human body are the head, the trunk, and the limbs (extremities). The upper extremities are arms, the lower extremities are legs. The head consists of two parts: the skull which contains the brain, and the face which consists of the forehead, the eyes, the nose, the mouth with the lips, the cheeks, the ears, and the chin. The head is connected with the trunk by the neck. The upper part of the trunk is the chest and the lower part is the abdomen. The framework of bones called the skeleton supports the soft parts and protects the organs from injury. The bones are covered with muscles. The upper extremity is connected with the chest by the shoulder. Each arm consists of the upper arm, the forearm, the elbow, the wrist, and the hand. The lower extremity (the leg) consists of the hip (the thigh), the knee, the calf, the ankle, and the foot. The fingers of feet are called toes. The body is covered with the skin. What are the principal parts of the human body? What parts does the head consist of? What are the upper part and the lower part of the trunk? What does the lower extremity consist of?