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Functions of skeletal system Human Physiology Bone Structure and Formation
Typology: Schemes and Mind Maps
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Dr. Prabha Arya Assistant Professor Deshbandhu College
There are typically 206 bones which can be categorized into 6 categories according to their shapes 1. Sutural bones , or wormian bones, as they name suggest they are for the connection between two bones. Basically found in between of flat bones of skull. Their borders are irregular and are like jigsaw puzzle and have variable size Fig: 6.1, Martini and Nath
They have irregular shapes with short, flat, notched or ridged surfaces. Exaples are spinal vertebrae, bone of pelvis and skull bones Fig: 6.1, Martini and Nath
They have thin parallel surfaces. They form room of the skull, the sternum, the ribs and the scapulae. Provide protection and attachment surface for the skeletal muscle Fig: 6.1, Martini and Nath
These bones are long and slender. They are located in arms, forearm, thigh, leg, palms, soles, fingers and toes. Femur is the largest and heaviest bone of the body Fig: 6.1, Martini and Nath
Fig: 6.1, Martini and Nath
A typical bone for example femur has one elongated tubular shaft called diaphysis which is having at both ends on expanded are known as epiphysis. Epiphysis is connected to diaphysis at both ends with a narrow zone called as metaphysis. Diaphysis has a wall made up of compact bone or dense bone which surrounds medullary (marrow)cavity. Fig: 6.1, Martini and Nath^ Fig: 6.1Tortora and Grabowski
Fig: 6.1, Martini and Nath
Ref: https://commons.wikim edia.org/wiki/File:Com position_of_bone.png
Calcium phosphate (2/3) Collagen (1/3) Cells (2%)
Fig: 6.3, Martini and Nath