Page 2 - Lesson Notes

Bones

 Bones form a framework of the body over which the muscles are wrapped
together.

 The bone tissue is strong and inflexible in nature.

 Therefore, the bone cells are present in a rigid matrix which is formed from
calcium and phosphorus.

 The bones comprises of microscopic tubes called Haversian Canals, which

present along the axis of the bone. They allow the blood vessels, and nerve
fibres to travel through them.

 These canals have concentric channels called Lamellae around them.

 The Haversian canals communicate with bone cells through connections
called Canaliculi.