Quiz: Cartilaginous Tissue — 9 domande

1. Which statement correctly classifies cartilage among body tissues?

A. Cartilage is a specialized connective tissue alongside bone tissue, blood, and lymph.

B. Cartilage is a type of epithelial tissue because it forms surfaces.

C. Cartilage is connective tissue proper and does not count as a specialized connective tissue.

D. Cartilage is a type of muscle tissue because it contains elastin fibers.

Answer: (A)

Spiegazione

Cartilage is described as one of the specialized connective tissues, distinct from connective tissue proper. The other options misclassify cartilage as muscle or epithelial tissue or deny it is specialized connective tissue.

2. Which of the following best describes cartilage within connective tissue?

A. A vascularized tissue that provides rapid nutrient exchange

B. A loose connective tissue primarily involved in immune responses

C. A specialized connective tissue characterized by a dense network of collagen and elastic fibers embedded in chondroitin sulphate

D. A type of dense, mineralized tissue that forms the skeleton

Answer: (C)

Spiegazione

Cartilage is a specialized connective tissue formed by a dense network of collagen and elastic fibers embedded in chondroitin sulphate, distinct from other connective tissues like bone or blood.

3. Which set lists the three types of cartilage?

A. Spongy cartilage, compact cartilage, and calcified cartilage.

B. White cartilage, yellow cartilage, and red cartilage.

C. Synovial cartilage, auricular cartilage, and nasal cartilage.

D. Hyaline cartilage, elastic cartilage, and fibrocartilage.

Answer: (D)

Spiegazione

The three types of cartilage are hyaline cartilage, elastic cartilage, and fibrocartilage. A common confusion is treating fibrocartilage like dense collagen-rich connective tissue, but it is still one of the cartilage types.

4. What is the primary role of the perichondrium in cartilage tissue?

A. To serve as the main site of cartilage cell division and repair

B. To produce blood vessels that nourish the cartilage directly

C. To mineralize the cartilage matrix for rigidity

D. To provide nutrients and support to the cartilage through diffusion and supply chondroblasts for growth

Answer: (D)

Spiegazione

The perichondrium supplies nutrients via diffusion and contains chondroblasts that contribute to cartilage growth, supporting its maintenance and repair. It does not produce blood vessels within cartilage itself, nor is it the primary site for mineralization or cell division within the cartilage matrix.

5. What defines cartilaginous tissue in terms of its matrix components?

A. A mineralized matrix made mainly of calcium phosphate and collagen.

B. A matrix made primarily of keratin and stratified layers of epithelial cells.

C. A dense network of collagen and elastic fibres firmly embedded in chondroitin sulphate.

D. A matrix dominated by muscle fibers and contractile proteins.

Answer: (C)

Spiegazione

Cartilaginous tissue is formed by collagen and elastic fibres embedded in chondroitin sulphate. The bone option reflects a mineralized matrix, which differs from cartilage.

6. When was elastic cartilage first identified as a distinct type of cartilage in histological studies?

A. In the early 19th century during initial microscopic examinations

B. In the late 20th century with advances in electron microscopy

C. During the 17th century with early anatomical dissections

D. In the mid-18th century with the development of histological staining techniques

Answer: (A)

Spiegazione

Elastic cartilage was recognized as a distinct cartilage type in the early 19th century when histologists began to differentiate tissue types based on their elastic fiber content. Earlier periods lacked the microscopic tools to distinguish elastic fibers clearly.

7. Which description correctly matches the role of chondroitin sulphate in cartilage?

A. It is responsible for cartilage matrix calcification.

B. It forms the vascular and nerve supply of cartilage.

C. It provides flexibility or resilience.

D. It provides elasticity through elastic fiber activity.

Answer: (C)

Spiegazione

Chondroitin sulphate is associated with flexibility or resilience in cartilage. Elasticity is attributed to elastic fibres instead, so the elasticity-focused distractor mixes up these components.

8. How does fibrocartilage differ from hyaline and elastic cartilage in terms of its structural composition?

A. Fibrocartilage contains chondroitin sulfate, while hyaline and elastic cartilage do not contain this substance.

B. Fibrocartilage has elastic fibers that allow it to maintain shape, unlike hyaline and elastic cartilage which lack elastic fibers.

C. Fibrocartilage is covered by perichondrium, unlike hyaline and elastic cartilage which are not.

D. Fibrocartilage contains multiple organized layers of collagen fibers, providing greater strength, whereas hyaline and elastic cartilage do not have this feature.

Answer: (D)

Spiegazione

Fibrocartilage is characterized by multiple organized layers of collagen fibers, which give it high tensile strength, unlike hyaline and elastic cartilage. It also lacks perichondrium, which is present in the other two types.

9. Who is credited with first describing the distinct types of cartilage based on their structural and functional differences?

A. The classification of cartilage types was proposed by Karl Gegenbaur.

B. Hyaline cartilage was first described by Rudolf Virchow.

C. Fibrocartilage was characterized by Friedrich Gustav Jakob Henle.

D. Elastic cartilage was identified by Louis-Jean-Marie Daubenton.

Answer: (A)

Spiegazione

The categorization of cartilage into hyaline, elastic, and fibrocartilage was developed through histological studies by anatomists like Karl Gegenbaur, who distinguished these types based on their structure and function.