Bone Remodelling and Aging Process

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What is the main difference in calcium salt content per unit area between woven bone and lamina dura?

Lamina dura has more calcium salt per unit area than woven bone.

What are the key components of spongy bone?

Trabeculae, bone marrow, and canaliculi.

What are the functional units of compact bone?

Osteons.

What anchors the outermost layer of bones and is involved in repairing fractures?

Sharpey's fibers. Signup and view all the answers

Which cells are responsible for the removal of bone during growth and remodeling?

Osteoclasts. Signup and view all the answers

What is the function of osteoblasts?

Facilitate the mineralization of osteoid matrix. Signup and view all the answers

Where are osteocytes found and what is their main characteristic?

Osteocytes are differentiated osteoblasts trapped in the bone matrix, containing cytoplasmic projections. Signup and view all the answers

Match the bone type with its characteristic feature:

Spongy Bone = Contains trabeculae that enclose bone marrow and vessels Compact Bone = Consists of osteons as functional units with Haversian canals Periosteum = Outermost layer anchored by Sharpey's fibers for fracture repair Endosteum = Site of production for osteoprogenitor cells and osteoclasts Signup and view all the answers

Match the bone cell with its primary function:

Osteoclasts = Remove bone during growth and remodeling in Howship's lacunae Osteoblasts = Facilitate mineralization of osteoid matrix with dendritic extensions Osteocytes = Differentiated osteoblasts trapped in bone matrix with cytoplasmic projections Osteoprogenitor cells = Involved in production of new bone cells Signup and view all the answers

Match the bone structure with its radiographic appearance:

Woven Bone = Lower calcium salt content per unit area compared to lamina dura Lamina Dura = More radio-opaque appearance in x-ray imaging Trabeculae = Visible as spongy network in radiographs Haversian Canals = Seen as central channels in compact bone on x-rays Signup and view all the answers

Match the term with its correct description:

Canaliculi = Provide communication between adjacent cavities in bone Sharpey's Fibers = Anchors periosteum along the outer surface of bones Howship's Lacunae = Location where osteoclasts remove bone during growth and remodeling Dendritic Extensions = Interconnect osteoblasts facilitating mineralization of osteoid matrix Signup and view all the answers

Match the bone cell type with its location and activity:

Osteoclasts = Located in Howship's lacunae, remove bone during growth and remodeling Osteoblasts = Interconnected via dendritic extensions, facilitate mineralization of osteoid matrix Osteocytes = Trapped in bone matrix, contain cytoplasmic projections Osteoprogenitor cells = Production site for new bone cells Signup and view all the answers

Match the key fact with the corresponding bone structure:

Compact Bone = Consists of central Haversian canals encased in lamellae as functional units Spongy Bone = Contains trabeculae enclosing bone marrow and vessels Periosteum = Outermost layer anchored by Sharpey's fibers for fracture repair Endosteum = Site for production of osteoprogenitor cells and osteoclasts Signup and view all the answers

Match the term with its function in bone biology:

Canaliculi = Facilitate communication between adjacent cavities in bone tissue Sharpey's Fibers = Anchor periosteum along outer surface of bones involved in fracture repair Howship's Lacunae = Location where osteoclasts remove bone during growth and remodeling processes Dendritic Extensions = Interconnect osteoblasts to aid in mineralization of osteoid matrix Signup and view all the answers

Match the feature with its corresponding radiographic appearance:

Woven Bone = Lower calcium salt content per unit area compared to lamina dura, less radio-opaque Lamina Dura = More radio-opaque appearance on x-ray imaging, seen as dense lines around teeth roots Trabeculae = (Spongy Bone) - Visible as mesh-like network on radiographs, supporting cancellous bone structure Haversian Canals = (Compact Bone) - Central channels seen on x-rays, containing blood vessels and nerves Signup and view all the answers

Match the location/activity with the corresponding type of bone cell:

Osteoclasts = Located in Howship's lacunae and remove bone during growth and remodeling. Osteoblasts = Interconnected via dendritic extensions to facilitate mineralization of osteoid matrix. Osteocytes = Differentiated osteoblasts trapped within the bone matrix containing cytoplasmic projections. Osteoprogenitor cells = Responsible for the production of new bone cells. Signup and view all the answers