The part of the skeleton that includes the pelvic and pectoral girdles and limbs is called the

• A. Appendicular skeleton
• B. Axial skeleton
• C. Implanted
• D. Amnion

Answer: (A)

This question tests how the skeleton is organized into two main parts: the axial skeleton and the appendicular skeleton. The part that includes the pelvic and pectoral girdles and the limbs is the appendicular skeleton, which covers the limbs themselves and the girdles that attach them to the trunk. The axial skeleton, in contrast, is the central axis and includes the skull, vertebral column, and rib cage, mainly providing protection and support of the body's core organs. Girdles—pelvic for the hind limbs and pectoral for the forelimbs—serve as the attachment points and allow a wide range of movement. The other options don’t refer to skeletal divisions: one is not a skeletal term, and the amnion is a fetal membrane, not part of the skeleton.