Anatomy LE 2: Cartilage and Bone
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Anatomy LE 2: Cartilage and Bone

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Questions and Answers

What is the primary characteristic of cartilage?

It is a type of connective tissue with high concentrations of GAGs and proteoglycans

What is the main function of cartilage in the body?

To provide a framework for soft tissues

What allows cartilage to bear mechanical stress?

The presence of GAGs and proteoglycans

What is the function of fibrocartilage in the body?

<p>To absorb shock and facilitate sliding regions within joints</p> Signup and view all the answers

What is the characteristic of cartilage that allows for almost friction-free movements of the joints?

<p>Its smooth surface</p> Signup and view all the answers

How do cartilage cells receive nutrition?

<p>Through diffusion from vascularized outer covering</p> Signup and view all the answers

What is the function of cartilage in synovial joints?

<p>To absorb shock and facilitate sliding regions within joints</p> Signup and view all the answers

What is the role of cartilage in the respiratory tract?

<p>To form the framework supporting soft tissues</p> Signup and view all the answers

What is the characteristic that distinguishes fibrocartilage from other types of cartilage?

<p>Abundant type I collagen</p> Signup and view all the answers

What is the function of type I collagen fibers in fibrocartilage?

<p>To bear mechanical stresses</p> Signup and view all the answers

Why is the matrix of fibrocartilage more acidophilic?

<p>Due to low proteoglycan content</p> Signup and view all the answers

What is the origin of cartilage in chondrogenesis?

<p>Mesenchyme</p> Signup and view all the answers

What is the first step in chondrogenesis?

<p>Rounding up of mesenchymal cells</p> Signup and view all the answers

What is the result of mitosis in chondroblasts?

<p>Differentiation into chondroblasts</p> Signup and view all the answers

What is the location of chondrocytes in cartilage?

<p>In the lacunae</p> Signup and view all the answers

How do chondrocytes obtain nutrients?

<p>Through diffusion from blood vessels or synovial fluids</p> Signup and view all the answers

What is the purpose of perichondrium in cartilage?

<p>Not present in fibrocartilage</p> Signup and view all the answers

What is the periosteum composed of?

<p>Double layer of CT</p> Signup and view all the answers

What type of collagen is found in the outer fibrous layer of the periosteum?

<p>Type I collagen</p> Signup and view all the answers

Which cells are found in the osteogenic layer of the periosteum?

<p>Osteoprogenitor cells</p> Signup and view all the answers

What is the function of osteoblasts?

<p>Secrete osteoid and form bone matrix</p> Signup and view all the answers

What is the name of the protein synthesized by osteoblasts?

<p>Osteocalcin</p> Signup and view all the answers

What is the first visible step in calcification?

<p>Mineralization of osteoid</p> Signup and view all the answers

What is the shape of active osteoblasts?

<p>Columnar</p> Signup and view all the answers

What is the name of the fibers that bind periosteum to the bone?

<p>Perforating fibers</p> Signup and view all the answers

Where is the periosteum absent?

<p>At articular surfaces</p> Signup and view all the answers

What happens to the inorganic matrix during decalcification?

<p>It is removed</p> Signup and view all the answers

What is the function of osteocytes?

<p>To deposit calcium and mineral salts</p> Signup and view all the answers

During endochondral ossification, what happens to the hyaline cartilage model?

<p>It undergoes degeneration</p> Signup and view all the answers

What penetrates the primary ossification center?

<p>Blood capillaries</p> Signup and view all the answers

What is formed in the diaphysis during endochondral ossification?

<p>Primary ossification center</p> Signup and view all the answers

What is the function of osteoprogenitor cells?

<p>To secrete osteoid</p> Signup and view all the answers

What happens to the woven bone in the primary ossification center?

<p>It is replaced by compact bone</p> Signup and view all the answers

What forms in the epiphysis at the time of birth?

<p>Secondary ossification center</p> Signup and view all the answers

What is the result of bone collar formation?

<p>Impeded diffusion of oxygen and nutrients</p> Signup and view all the answers

What is the function of the epiphyseal plate?

<p>Bone elongation</p> Signup and view all the answers

What is the end result of the continuous deposition of bony matrix?

<p>Formation of compact bone</p> Signup and view all the answers

What is the typical order of the overlapping zones in the epiphyseal plate?

<p>From diaphysis to epiphysis</p> Signup and view all the answers

What is the role of blood vessels in the formation of trabecular bone?

<p>They infiltrate the trabeculae and become red marrow</p> Signup and view all the answers

What is the outcome when the ossification centers fuse?

<p>The bone reaches its full stature</p> Signup and view all the answers

What is the significance of the epiphyseal plate in childhood?

<p>It promotes bone elongation</p> Signup and view all the answers

What is the type of cartilage used as a template in endochondral ossification?

<p>Hyaline cartilage</p> Signup and view all the answers

What is the outcome of the fusion of ossification centers?

<p>The formation of epiphyseal lines</p> Signup and view all the answers

What type of bone is formed through the process of endochondral ossification?

<p>Both long and short bones</p> Signup and view all the answers

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