Question

Define cartilage and types of cartilage

Answer 1

Cartilage is a type of connective tissue composed of special cells known as chondrocytes along with collagen or yellow elastic fibers. The fibers and the cells are embedded in a firm gel like matrix rich in mucopolysaccharides. Cartilage is not as hard and rigid as bone. It is much more flexible and elastic.

There are three types of cartilage;

Hyaline cartilage
Fibrous cartilage
Elastic cartilage

Hyaline cartilage:

This type of cartilage has very thin fibers having same refractive index as the matrix of the cartilage and thus these fibers are not seen. Hyaline cartilage is the articular cartilage of long bones, sternum, ribs etc. Its color is bluish white and it is flexible.

Fibrous cartilage:

This type of cartilage has numerous white fibers. It is present in the symphysis pubis, and sternoclavicular joint etc. Its color is glistening white and the appearance is opaque.

Elastic cartilage:

This type of cartilage has numerous yellow elastic fibers. It is present in the ear pinna, external auditory meatus, Eustachian tubes, and epiglottis etc. Its color is yellowish and the appearance is opaque.

Answer 2

✨Heya!!!!✌

✍Your answer⬇⬇⬇⬇
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⭐Cartilage⤵

Cartilage is a firm elastic tissue. It's matrix is rich in chondrin which consist of proteoglycans(protein chain bonded to long chains of disaccharide hyaluronic acid units). Chondrocyte are large and bluntly angular cartilage cells lying scattered in the matrix. They occur in clusters of two or three cells in small spaces called lacunae. The protective layer called perichondrium surrounds the cartilage. Cartilage is avascular(contains no blood vessels) and nutrients are diffused through the matrix.
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⭐Types of Cartilage⤵

⏩Hyaline cartilage=> It's matrix is clear, homogenous, translucent and bluish in colour, lacking fibres. It is present in sternum, hyoid and ribs.

⏩Fibrous cartilage=> It contains matrix rich in bundles of collagen fibres along with chondrocyte. This can be seen in inter-vertebral disc.

⏩Elastic cartilage=> The matrix contains a network of yellow elastic fibres between scattered chondrocytes. Thus type of cartilage is elastic and can be seen in pinna, tip of nose and epiglottis.

⏩Calcified cartilage=> At first it is like hyaline cartilage but later on it gets hardened like bone due to decomposition of calcium salts, for example, supra scapula of frog's pectoral girdle, pubis of pelvic girdle, pubis of pelvic girdle of frog,etc.
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Hope it helps☑

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