Spooky Skeleton Jobs
The skeleton gives the body shape and keeps it from collapsing. Which skeletal function is this?
Support
Skull: axial or appendicular?
Axial
This hard tissue forms the strong outer wall of a bone.
Compact bone
The femur is what type of bone?
Long bone
What type of joint is the elbow?
Hinge joint
The skull protects the brain and the ribs protect the heart and lungs. Which function is this?
Protection
Femur: axial or appendicular?
Appendicular
This smooth tissue covers the ends of bones at joints and reduces friction.
Articular cartilage
The sternum is what type of bone?
Flat bone
What type of joint is the hip?
Ball-and-socket joint
Bones act as levers while muscles pull on them. Which skeletal function is being used?
Movement
Ribs and sternum belong to which division?
Axial skeleton
This marrow produces blood cells.
Red marrow
The small bones of the wrist are mainly what type?
Short bones/Sesamoid bones
What type of joint allows rotation in the neck?
Pivot joint
Red marrow performs this important job inside certain bones.
Produces blood cells
The shoulder girdle, arms, pelvic girdle, and legs belong to which division?
Appendicular skeleton
What is the periosteum?
The living membrane covering the outside of a bone
Vertebrae are what type of bone?
Irregular bones
Ligaments connect what to what?
Bone to bone
A student says, “The skeleton is only for support.” Name two other functions and give an example of each.
protection, movement, storage, blood-cell production
Explain why the femur is appendicular rather than axial.
It is a limb bone; the appendicular skeleton includes the limbs and the girdles that attach them to the body’s central axis.
Why is a long bone not made entirely of solid compact bone?
A solid bone would be unnecessarily heavy. Spongy bone and the hollow shaft reduce weight while maintaining support and leaving space for marrow.
Why does bone shape matter? Use one example.
Shape helps a bone perform its function; e.g. long bones act as levers for movement, flat bones protect organs, etc.
Explain how bones, joints, muscles, and tendons work together to move the body.
Muscles contract and pull on bones through tendons; bones act as levers and movement occurs at joints.