Hormones and Bone Formation Quiz

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Which type of bone is typically observed in developing bone?

Woven bone (correct)

Compact bone

Trabecular bone

Lameller bone

What are the four distinct patterns displayed by Lameller bone?

Haversian canals, Volkman’s canals, osteocytes, canaliculi

Outer layer, Inner layer, Bone-forming cells, Sharpey’s fibers

Periosteum, Trabecular bone, Blood vessels, Compact bone

Osteons, Interstitial lamellae, Outer circumferential lamellae, Inner circumferential lamellae (correct)

Which type of canal is rich in blood vessels and may have vessels entering it from the outer layer?

Haversian canal (correct)

Periosteum

Volkman’s canal

Haversian system

What is the function of Sharpey's fibers in the bone structure?

Penetrate outer circumferential lamellae Signup and view all the answers

Where are bone-forming cells (osteoblasts) located during the embryonic period?

Inner layer of periosteum Signup and view all the answers

What is the primary function of the endosteum?

To provide a protective lining for the spongy bone walls Signup and view all the answers

What is the role of osteocalcin in the mineralization of the bone matrix?

Osteocalcin binds to extracellular calcium ions, leading to a high local concentration Signup and view all the answers

What is the role of alkaline phosphatase in the mineralization of the bone matrix?

Alkaline phosphatase increases local calcium and phosphate concentrations, which facilitates mineral deposition Signup and view all the answers

What is the role of matrix vesicles in the mineralization of the bone matrix?

Matrix vesicles accumulate calcium and phosphate ions from larger molecules, which then serve as nucleation sites for mineral deposition Signup and view all the answers

How do osteoclasts facilitate the resorption of bone matrix?

Osteoclasts secrete lysosomal enzymes that hydrolyze the collagenous protein and glycosaminoglycans of the bone matrix, releasing the attached mineral salts Signup and view all the answers

Which of the following is the correct sequence of events during endochondral ossification?

Primitive mesenchyme → developing cartilage model → primary ossification center → secondary ossification center Signup and view all the answers

Which zone of the epiphyseal plate is responsible for the longitudinal growth of bones?

Proliferative zone (PZ) Signup and view all the answers

What is the primary function of osteoclasts during bone remodeling?

Resorption of existing bone tissue Signup and view all the answers

Which type of bone is formed first during development and is later replaced by lamellar bone?

Woven bone Signup and view all the answers

What is the primary function of the periosteum in bone development and growth?

Protection and nourishment of bone Signup and view all the answers

Hormones and Bone Formation Quiz

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