Question

Why are tendons made of dense regular connective tissue but the dermis contains dense irregular connective tissue?

Answer 1

Hint: Dense regular connective tissue is made up of white flexible tissue that contains tightly packed bundles of collagen fibres.Whereas irregular connective tissue is an irregular connective tissue, the intercellular matrix contains a dense irregular network of collagen and elastic fibre bundles.

Complete answer:
• In Dense regular connective tissues, between many parallel bundles the collagen fibres are present. There are also two types: White fibrous connective tissue and Yellow elastic connective tissue.
• White fibrous connective tissue that has great strength but the flexibility is limited. It is present at the joints between the skull bones and makes them immovable.
• The presence of abundant white fibres, the dermis skin of large mammals yields leather after chemical treatment called tanning.
• Yellow elastic connective tissue is made up of thicker branched loose networks of yellow fibres. Fibroblasts are irregularly scattered. It contains mast cells, macrophages and some adipose cells.
• Dense irregular connective tissue: This type of connective tissue contains a dense network of collagenous fibres in a viscous matrix. It is found in joint capsules and the connective tissue that envelops muscles and it forms the dermis of the skin.

Note:
Tissues support, protect and give strength to other tissues and organs of our body. Connective tissue is made up of cells, fibres and a gel-like substance. There are many types of connective tissue like bone, cartilage, fat, blood and lymphatic tissue.