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If the matrix of bone cells contains calcium and phosphorus compounds, then what do we find in the matrix of cartilage?
Proteins and sugars
Proteins and fats
Phosphorus and sugars
Calcium and sugars
Proteins and sugars
Bone and cartilage are both specialized types of connective tissue. While bone possesses a hard, rigid matrix impregnated with calcium and phosphorus compounds, the matrix of cartilage is composed of proteins and sugars (specifically proteoglycans and glycosaminoglycans), making it flexible.
Bone and cartilage are both specialized types of connective tissue. While bone possesses a hard, rigid matrix impregnated with calcium and phosphorus compounds, the matrix of cartilage is composed of proteins and sugars (specifically proteoglycans and glycosaminoglycans), making it flexible.
Think of bone as a concrete pillar reinforced with steel bars, while cartilage is like a high-density rubber block that can bend and absorb impact without snapping.
Ca10тАЛ(PO4тАЛ)6тАЛ(OH)2тАЛ тАФ Represents the chemical composition of hydroxyapatite in bone matrix.
Bone tissue consists of osteocytes embedded in a calcified matrix of hydroxyapatite, Ca10тАЛ(PO4тАЛ)6тАЛ(OH)2тАЛ, which provides structural strength. In contrast, cartilage (such as hyaline cartilage) consists of chondrocytes trapped in a matrix rich in collagen fibers (proteins) and ground substance composed of chondroitin sulfate and hyaluronic acid (sugars), allowing for cushioning and elasticity.
Bone matrix is rigid due to mineral deposition.
Cartilage matrix is flexible due to the presence of protein-polysaccharide complexes.
Both tissues are types of specialized connective tissue.
Chondrocytes are the primary cells found in cartilage.
Bone provides structural support and mineral storage.
Cartilage provides friction-free surfaces at joints and shape to structures like the ear.
Bone's rigidity makes it susceptible to fractures under excessive stress.
Cartilage has very poor blood supply, leading to slow healing after injury.
Bone formation (osteogenesis) and skeletal framework.
Joint cartilage for shock absorption and smooth movement.
| Feature | Bone | Cartilage |
|---|---|---|
Matrix Composition | Calcium & Phosphorus | Proteins & Sugars |
The matrix of cartilage is secreted by chondrocytes.
Wrong options: Fats are not a characteristic component of the ground substance of cartilage; cartilage is a connective tissue, not a lipid storage tissue.
A is correct тАФ The matrix of cartilage is composed of proteins and sugars, which provide it with elasticity and flexibility, unlike the mineralized matrix of bone.
When comparing connective tissues, remember that 'mineralized' equals 'hard/bone' and 'fiber-rich/proteoglycan-rich' equals 'flexible/cartilage'.
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