Anatomy & Physiology

Anatomy & Physiology Study Guide The upper limbs are adapted for freedom of movement. The pelvic girdle attaches to the lower limbs and consists of two coxal bones: • The bones of the pelvic girdle are more massive than those of the pectoral girdle. • The pelvic girdle consists of two coxal bones. Each coxal bone forms through the fusion of an ilium, an ischium, and a pubis. • The pelvis consists of the hip bones, the sacrum, and the coccyx. It is subdivided into the false (greater) pelvis and the true (lesser) pelvis. The lower limbs are adapted for locomotion and support. Sex differences and age account for individual skeletal variation: • Studying a human skeleton can reveal important information, such as the person’s weight, sex, body size, muscle mass, and age. • Age-related changes take place in the skeletal system. These changes begin at about age one and continue throughout life.

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