Anatomy of the Long Bone Quiz

What is the central portion of a long bone called?

• Endosteum

• Epiphysis

• Diaphysis

• Periosteum

What is the outer layer of the diaphysis called?

• Endosteum

• Periosteum

• Epiphysis

• Medullary cavity

What is the primary function of the periosteum?

• To form joints

• To cover and protect the diaphysis

• To store fat

• To produce blood cells

What type of marrow is found in the medullary cavity of an adult?

• Yellow marrow

• Red marrow

• Spongy marrow

• Compact marrow

In infants, what type of marrow is predominantly found in the long bones?

• Compact marrow

• Spongy marrow

• Red marrow

• Yellow marrow

What is the main composition of the epiphysis?

• Cartilage

• Spongy bone

• Yellow marrow

• Compact bone

Which part of the long bone is primarily responsible for forming joints?

• Medullary cavity

• Diaphysis

• Periosteum

• Epiphysis

What is the function of articular cartilage?

• To protect the periosteum

• To provide a low friction surface at joints

• To produce blood cells

• To store fat

What happens to articular cartilage as we age?

• It turns into bone

• It increases in thickness

• It becomes more brittle

• It becomes more flexible

In the anatomy of a human femur, what is the main composition of the diaphysis?

• Cartilage

• Yellow marrow

• Compact bone

• Spongy bone