Bone Structure and Function Concepts

This lecture explores the anatomy of a long bone, focusing on its key components: the diaphysis, epiphyses, metaphysis, marrow cavity, periosteum, and endosteum. It explains the structure and function of each part, including the role of compact and cancellous bone, the growth process involving the epiphyseal plate, and the significance of bone marrow. The lecture also highlights the periosteum's sensitivity and its role in bone pain.

What is the main composition of the diaphysis in a long bone?

• Cancellous bone

• Compact bone

• Spongy bone

• Tracular bone

Which term describes the end of a long bone that is closer to the body?

• Distal epiphysis

• Proximal epiphysis

• Metaphysis

• Diaphysis

What is the epiphysial plate primarily made of during growth?

• Bone

• Cartilage

• Muscle

• Fat

What does the epiphysial plate become once growth stops?

• Cancellous bone

• Epiphysial line

• Diaphysis

• Metaphysis

Where is the metaphysis located in a long bone?

• At the end of the bone

• Between the epiphysis and diaphysis

• In the middle of the diaphysis

• Inside the medullary cavity

What is the primary function of yellow marrow?

• Blood cell production

• Energy storage

• Bone growth

• Nerve signaling

What is the periosteum's role in relation to nerve endings?

• It houses nerve endings

• It protects nerve endings

• It generates nerve endings

• It destroys nerve endings

What is the function of the endosteum?

• To cover the outer surface of the bone

• To line the medullary cavity

• To store yellow marrow

• To produce red blood cells

What are Sharpies fibers also known as?

• Tracular fibers

• Epiphysial fibers

• Cancellous fibers

• Perforating fibers

What can cause bone pain related to the periosteum?

• Presence of cancellous bone

• Stretching or lifting of the periosteum

• Formation of yellow marrow

• Growth of the diaphysis