The outer covering of cartilage is known as:

Mast cells are found in . . . . . . .

Read the following statements and answer the question.
$(i)$ They have a hard and non-pliable ground substance rich in calcium salts and collagen fibres.
$(ii)$ They support and protect softer tissues and organs.
$(iii)$ Osteocytes are present in the spaces called lacunae.
$(iv)$ They also interact with skeletal muscles attached to them to bring about movements.
Which of the following type of tissue is being described by above statements?

What type of connective tissue is present in the wall of the trachea?

Describe the structure and function of fibrous connective tissue.

Bone is distinguished from cartilage by the presence of