The human body is a single, total composite. Everything works together. Each part acts in association with ALL other parts. Yet, it is also a series of regions. Each region is responsible for certain body activities. These regions are:
a. Back and Trunk. The torso includes the back and trunk. The trunk includes the thorax (chest) and abdomen. At the lower end of the trunk is the pelvis. The perineum is the portion of the body forming the floor of the pelvis. The lungs, the heart, and the digestive system are found in the trunk.
b. Head and Neck. The brain, eyes, ears, mouth, pharynx, and larynx are found in this region.
(1) Each upper member includes a shoulder, arm, forearm, wrist, and hand.
(2) Each lower member includes a hip, thigh, leg, ankle, and foot.
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