Bone Tissue Classification Overview

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Questions and Answers

What structural feature of trabeculae allows for strength in a specific direction?

Trabeculae arrange themselves based on muscle pull. (correct)

They are filled with osteocytes.

They have a dense fibrous connective tissue lining.

The lamellar bone is organized in layers.

Which cell type is responsible for breaking down bone tissue?

Osteocytes

Osteoclasts (correct)

Osteochondral progenitor cells

Osteoblasts

What is the main function of canaliculi found within the trabeculae?

To assist in connecting osteocytes. (correct)

To store fat for energy.

To facilitate the synthesis of collagen.

To provide weight support to the bone.

Where is spongy bone located in relation to compact bone?

On the inside of bones. Signup and view all the answers

What is the primary difference between periosteum and perichondrium?

The types of cells in the inner layer differ. Signup and view all the answers

What is the name of the canals that run perpendicular to the length of the bone?

Perforating canals Signup and view all the answers

What structure consists of concentric circles of lamellae surrounding a central canal?

Osteon Signup and view all the answers

Which component connects the various layers of lamellar bone within an osteon?

Canaliculi Signup and view all the answers

How do nutrients and gases move towards osteocytes in compact bone?

They move outward from the central canal Signup and view all the answers

What are the circles formed by lamellae around the blood vessels in an osteon called?

Concentric lamellae Signup and view all the answers

What characterizes woven bone tissue?

Collagen fibers are randomly oriented. Signup and view all the answers

What process leads to the transformation of woven bone into a more organized structure?

Remodeling Signup and view all the answers

Which type of bone tissue is characterized by its layered organization?

Lamellar bone Signup and view all the answers

Spongy bone is also known by which of the following terms?

Cancellous bone Signup and view all the answers

Which statement is true regarding the composition of spongy bone?

It contains more space relative to bone matrix. Signup and view all the answers

What is the primary function of the articular cartilage found at the epiphysis?

To form a joint with another bone Signup and view all the answers

What fills the medullary cavity in adults?

Yellow bone marrow Signup and view all the answers

What role do osteoblasts and osteoclasts play in bone structure?

They are responsible for bone growth and resorption Signup and view all the answers

What happens to the epiphyseal plate as a person reaches adulthood?

It ossifies to form the epiphyseal line Signup and view all the answers

Where is the periosteum located in relation to the bone structure?

Surrounding the outer surface of all bones Signup and view all the answers

Study Notes

Bone Tissue

Bone tissue is made of different types of bone
Woven bone: Collagen fibers are randomly arranged. Found in early skeletal development and bone repair.
Lamellar bone: Collagen fibers are organized into sheets (lamellae). The most common type of bone.
Spongy bone (Cancellous/Trabecular bone): Less bone matrix, more space. Gives bone its porous appearance. Found inside bones.
Compact bone (Cortical bone): Dense, few spaces. Forms the outer layer of bones.

Bone Classification

Spongy bone: Found on the inside of bones.
Compact bone: Found on the outside of bones, providing strength.
Trabeculae:Rods or plate-like structures in spongy bone. Aligned with lines of stress.
Osteocytes: Found in lacunae (spaces); connected to each other via canaliculi.
Medullary cavity: Space in the shaft of long bones. -Filled with bone marrow (red or yellow).
Periosteum: Dense fibrous connective tissue covering the outer surface of bones. Two layers (outer fibrous, inner osteogenic).
Endosteum: Connective tissue lining the inside of bones, esp. medullary cavity. Contains osteoblasts and osteoclasts.

Bone Growth

Intramembranous ossification: Bone forms directly within a fibrous membrane. Forms some skull bones and clavicle parts.
Endochondral ossification: Bone forms by replacing hyaline cartilage. Forms most of the skeleton.

Epiphyseal Plate (Growth Plate)

Found between the epiphysis and diaphysis of long bones.
Allows for bone length growth.
Contains cartilage cells that undergo interstitial growth.
Calcification replaces cartilage.
Closure: Markers of skeletal maturity.

Bone Remodeling

Continuous process of bone resorption (osteoclasts) and bone deposition (osteoblasts).
Resorption removes old bone, deposition creates new.
Maintains bone strength, mineral homeostasis.

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Description

This quiz covers the essential types of bone tissue, including woven, lamellar, spongy, and compact bone. It highlights their characteristics, functions, and locations within the skeletal system. Test your knowledge on bone classification and anatomical structures.