The appendicular (AP-en-DIC-you-lur) region of the body consists of the appendages (also called limbs or extremities): the upper limbs and the lower limbs. The upper limb includes the brachium (BRAY-kee-um) (arm), antebrachium8 (AN-teh-BRAY-kee-um) (forearm), carpus (wrist), manus (hand), and digits (fingers). The lower limb includes the thigh, crus (leg), tarsus (ankle), pes (foot), and digits (toes).
In strict anatomical terms, "arm" refers only to that part of the upper limb between the shoulder and elbow. "Leg" refers only to that part of the lower limb between the knee and ankle.
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This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.