Question

Ligament is:
A. Modified white fibrous tissue
B. Modified yellow elastic fibrous tissue
C. Inelastic white fibrous tissue
D. Both B and C

Answer 1

Hint: White fibrous connective tissue and yellow elastic fibrous connective tissue are the classification of dense fibrous connective tissue. Dense fibrous connective tissue is the classification of Connective tissue proper.

Complete answer:
Dense fibrous connective tissue is the tissue in which the tissue matrix is in small quantity and it mainly contains fibroblast cells. Fibroblast cells form fibres which are in large amounts. Because of this abundance of fibres, this tissue has capacity of flexibility. It is further divided into two types:
(a) White fibrous connective tissue
(b) Yellow elastic fibrous connective tissue
Tendon is a type of white fibrous connective tissue. Matrix of this tissue contains a large number of white non-elastic collagen fibres. Few elastin fibres are also present in this tissue whereas yellow fibres and reticular fibres are completely absent. Tendons are cord or band-like structures which join muscle to bones. In the tendon, a parallel bundle of collagen fibres with rows of fibroblast in between, are present.
Ligament is a type of yellow elastic fibrous connective tissue. Ligament is a structure which connects bones. Matrix of this connective tissue contains a large amount of branched, yellow elastic fibres which are densely packed together with a few fibroblasts. This tissue occurs in the parts where elasticity is mainly required. These fibres are yellow in colour and are composed of elastin protein.
Although, in most ligaments collagen is the major extracellular fiber, in some ligaments mainly elastic fibres are present but reticular fibres are completely absent.
Thus, ligament is modified yellow elastic fibrous connective tissue.

So, the correct answer is ‘modified yellow elastic fibrous connective tissue’.

Note:
Fibroblast cell is the largest cell of Connective tissue proper. The main is to produce fibre and to secrete matrix.
Collagen fibres are bright and white fibres composed of collagen protein.