Skeletal System

Long Bones

• act as a lever to aid in movement

• provide support and stability with little movement

• have a large surface area for attaching to muscles

• have a highly specialized shape and structure

Short Bones

• act as a lever to aid in movement

• provide support and stability with little movement

• have a large surface area for attaching to muscles

• have a highly specialized shape and structure

Flat Bones

• act as a lever to aid in movement

• provide support and stability with little movement

• have a large surface area for attaching to muscles

• have a highly specialized shape and structure

Irregular Bones

• act as a lever to aid in movement

• provide support and stability with little movement

• have a large surface area for attaching to muscles

• have a highly specialized shape and structure

Compact Bones

• dense bone in which the bony matrix is solidly filled with organic ground substance and inorganic salts

• consists of plates and bars of bone adjacent to small, irregular cavities that contain red bone marrow

• long cylinders that act as tiny weight-bearing pillars in the bone

• runs through the middle of each osteon and contains small blood vessels for nourishment and nerve fibers for signaling

Spongy Bones

• dense bone in which the bony matrix is solidly filled with organic ground substance and inorganic salts

• consists of plates and bars of bone adjacent to small, irregular cavities that contain red bone marrow

• long cylinders that act as tiny weight-bearing pillars in the bone

• runs through the middle of each osteon and contains small blood vessels for nourishment and nerve fibers for signaling

Osteon

• dense bone in which the bony matrix is solidly filled with organic ground substance and inorganic salts

• consists of plates and bars of bone adjacent to small, irregular cavities that contain red bone marrow

• long cylinders that act as tiny weight-bearing pillars in the bone

• runs through the middle of each osteon and contains small blood vessels for nourishment and nerve fibers for signaling

Haversian canal

• dense bone in which the bony matrix is solidly filled with organic ground substance and inorganic salts

• consists of plates and bars of bone adjacent to small, irregular cavities that contain red bone marrow

• long cylinders that act as tiny weight-bearing pillars in the bone

• runs through the middle of each osteon and contains small blood vessels for nourishment and nerve fibers for signaling

Projections

• place where muscle and ligaments attach

• places that form joints

• place for blood vessels and nerves to run through

Surfaces

• place where muscle and ligaments attach

• places that form joints

• place for blood vessels and nerves to run through