What is cartilage and bone
Answers
Explanation:
cartilage covers the ends of bones, and gives support to certain organs such tip of the nose, external projection of the ear and wind pipe.
bone is the main supportive structure of vertebrates. the bone cells are embedded in a hard matrix of calcium and phosphorus salt.
Cartilage:
It is a flexible connective tissue.
It is of four types : Hyaline, White, Yellow, Calcified.
★ Hyaline :
Matrix is nearly fibre less.
Pliable.
Location : Nasal, Septum, Articular, Larynx.
★ White :
Collagen fibre is more.
Slightly pliable.
Location : Pubic symphysis
★ Yellow :
Elastic fibre is more.
Pliable.
Location : Ear pinna
★ Calcified :
Modified Hyaline cartilage.
Hard in nature because of deposition of calcium.
Location : Head of humans, head of femur.
Bone:
Study of bone is called osteology.
Outer most covering : Periosteum..
Formation of bone is called ossification.
Bone forming cells : Osteocytes and osteoblasts.
Bone destroying cells : osteocasts.
Each lacunae is having only 1 Osteocyte.
Osteocytes are irregular : because they have cytoplasmic extensions.