Problem 139 - Objective Biology for NEET

Question

Symphysis is made up of (a) Fibrocartilage (b) Synovial fluid (c) Elastic cartilage (d) Hyaline cartilage

Step-by-Step Solution

Answer

The Symphysis is made up of Fibrocartilage.

Step 1: Understand Symphysis

A Symphysis is a type of joint that exists in the human skeletal system. The primary purpose of this joint is to allow slight movements and provide strong connections between the adjoining bones.

Step 2: Identify the Constituents of a Symphysis

A Symphysis is constructed from fibrocartilage, a type of cartilage that consists of white, collagenous fibers. Fibrocartilage is dense, tough, and resistant to tearing and wear.

Step 3: Match to the Options Provided

In the options provided, fibrocartilage is mentioned. Therefore, that will be the selected answer because fibrocartilage is the type of cartilage that makes up a Symphysis.

Key Concepts

Symphysis Joint

The symphysis joint is a specific type of joint found in the human skeletal system. It's designed for stability and allows only limited movement. Think of a symphysis as the bridge that connects two bones closely.
These joints play a critical role in distributing the weight and stress across the body.

• Found in areas like the pubic symphysis and intervertebral discs.
• Acts as a shock absorber between bones.
• This joint uses fibrocartilage for its robust, slightly flexible construction.

If you've ever moved your hips or bent your lower back, you've experienced the flexibility and support provided by symphysis joints. They are incredibly important for maintaining stability while allowing essential bodily movements.

Fibrocartilage

Fibrocartilage is a specialized type of cartilage that forms essential parts of the skeletal structure like the symphysis joints. It's unique because of its toughness and endurance. Unlike other cartilages, fibrocartilage is packed with collagen fibers.
As a result, it's especially suited for areas where stress and strain are common.

• Found in places requiring significant support, such as knee joints and spinal discs.
• Fibrocartilage is dense and rigid, making it perfect for withstanding compressive forces.
• It serves as a blend of strength and slight flexibility, enhancing joint stability.

This density allows fibrocartilage to serve as an intermediary between bones, providing necessary cushioning and support, crucial for a wide range of physical activities.

Types of Cartilage

Cartilage is an important but soft connective tissue found throughout the body. There are three main types, each performing specific roles and having distinct characteristics:

• Fibrocartilage: As covered earlier, fibrocartilage is extremely tough and is found in places like the symphysis joints and intervertebral discs. It stands out for its strength and resilience.
• Hyaline Cartilage: This type is most common in the body, providing smooth surfaces for joint movement. It is located at the ends of long bones and is less fibrous than fibrocartilage, allowing for more flexibility while maintaining structural support.
• Elastic Cartilage: Highly flexible, this cartilage contains more elastin fibers, offering greater elasticity. It is found in the ear and the epiglottis, where flexibility is crucial.

Each type of cartilage has its own unique role, supporting various functions across different parts of the body, and working collectively to ensure smooth and efficient movement.