Which structure forms the gelatinous extracellular matrix component in cartilage?

Which structure forms the gelatinous extracellular matrix component in cartilage?

• A. Osteoid
• B. Adipose tissue
• C. Ground substance
• D. Collagen type I fibers

Answer: (C)

The gelatinous part of cartilage comes from the ground substance. This ground substance is a hydrated gel rich in proteoglycans and glycosaminoglycans, which trap water and create a firm yet pliable matrix. That hydrated gel gives cartilage its characteristic resilience and ability to resist compression. Other options don’t form this gel: osteoid is the unmineralized bone matrix, adipose tissue is fat, and while collagen fibers contribute strength, cartilage’s fibrous component is collagen type II, not the gelatinous ground substance itself. The key idea is that the gel-like consistency of cartilage comes from the ground substance surrounding the cells and fibers.

The gelatinous part of cartilage comes from the ground substance. This ground substance is a hydrated gel rich in proteoglycans and glycosaminoglycans, which trap water and create a firm yet pliable matrix. That hydrated gel gives cartilage its characteristic resilience and ability to resist compression. Other options don’t form this gel: osteoid is the unmineralized bone matrix, adipose tissue is fat, and while collagen fibers contribute strength, cartilage’s fibrous component is collagen type II, not the gelatinous ground substance itself. The key idea is that the gel-like consistency of cartilage comes from the ground substance surrounding the cells and fibers.