The Skeletal System
• The skeleton is subdivided into two divisions:
• the axial skeleton, the bones that form the longitudinal axis
the body, and
• the appendicular skeleton, the bones of the limbs and gird
• In addition to bones, the skeletal system includes joints,
cartilages, and ligaments (fibrous cords that bind the bones
together at joints). The joints give the body flexibility and a
movement to occur.
, Functions of Bones:
• Support. Bones form the internal framework that supports and anchors all soft org
The bones of the legs act as pillars to support the body trunk when we stand, and t
cage supports the thoracic wall.
• Protection. Bones protect soft body
• Movement. Skeletal muscles, attached to bones by tendons, use the bones as leve
move the body and its parts. As a result, we can walk, swim, throw a ball, and brea
• Storage. Fat is stored in the internal cavities of bones. Bone itself serves as a storeh
for minerals, the most important being calcium and phosphorus, although others a
also stored.
• Blood cell formation. Blood cell formation, or hematopoiesis occurs within the ma
cavities of certain bones.
• The skeleton is subdivided into two divisions:
• the axial skeleton, the bones that form the longitudinal axis
the body, and
• the appendicular skeleton, the bones of the limbs and gird
• In addition to bones, the skeletal system includes joints,
cartilages, and ligaments (fibrous cords that bind the bones
together at joints). The joints give the body flexibility and a
movement to occur.
, Functions of Bones:
• Support. Bones form the internal framework that supports and anchors all soft org
The bones of the legs act as pillars to support the body trunk when we stand, and t
cage supports the thoracic wall.
• Protection. Bones protect soft body
• Movement. Skeletal muscles, attached to bones by tendons, use the bones as leve
move the body and its parts. As a result, we can walk, swim, throw a ball, and brea
• Storage. Fat is stored in the internal cavities of bones. Bone itself serves as a storeh
for minerals, the most important being calcium and phosphorus, although others a
also stored.
• Blood cell formation. Blood cell formation, or hematopoiesis occurs within the ma
cavities of certain bones.
