Video Transcript
What are the components of the
axial skeleton? (A) The pectoral and pelvic girdles
and the bones of the arms and the legs. (B) The vertebral column, the limb
bones, and the pectoral girdle. (C) The skull and the pelvic
girdle. Or (D) the vertebral column, the
skull, and the thoracic cage.
This question is about the skeletal
system. And it’s asking us to recall the
components or parts that are in the axial skeleton, which is a part of the skeletal
system. The adult human skeletal system
consists of 206 bones, as well as all of the joints that hold them together. The skeletal system is often
divided and described in two sections: the axial skeleton and the appendicular
skeleton.
The appendicular skeleton consists
of the human appendages, which we call arms and legs. The appendicular skeleton also
contains the bones that attach the appendages to the torso. And that includes our pelvic
girdle, as well as the pectoral girdle. The axial skeleton contains the
bones that fall along and around the central axis of the human body. This includes the bones of the
skull, the bones of the thoracic cage, also called the rib cage, as well as the
bones of the vertebral column, which we also call the spinal column. This means that the components of
the axial skeleton are the vertebral column, the skull, and the thoracic cage.
