Table of Contents
Osteon Definition
Osteon is a small cylindrical unit of bone tissue. Each osteon is about 0.5 mm in diameter and contains a central canal that spirals around its length. The canal contains blood vessels and nerves that supply and nourish the bone tissue. The bone tissue around the canal is called the cortex. Osteons are arranged in a concentric pattern around the central canal.
Bones
are living tissues that are constantly being broken down and rebuilt.
Bones are tissues that make up the skeleton. Bones are constantly being broken down and rebuilt. The process of breaking down and rebuilding bones is called remodeling. Bone remodeling occurs when the body removes old bone and replaces it with new bone. Bone remodeling is important because it helps keep bones strong and healthy.
Bones Functions
Bones are a type of connective tissue that make up the skeleton. They have several functions, including providing support for the body, protecting organs, and producing blood cells. Bones are also involved in movement, as they articulate with other bones to form joints.
Types of Bone
There are four types of bone in the human body:
1. Long bones: These are the bones in the arms and legs. They are long and thin and have a central shaft and two ends. The ends of the bone are called the proximal end and the distal end. The proximal end is the end closest to the body’s center, and the distal end is the end farthest from the body’s center.
2. Flat bones: These are the bones in the skull and the ribs. They are thin and flat and have a smooth surface.
3. Short bones: These are the bones in the wrists and ankles. They are small and cube-shaped.
4. Sesamoid bones: These are tiny, round bones that are located in the joints between the bones of the fingers and toes.
Compact Bone
The compact bone is the dense, white outer layer of bone. It is made up of tightly packed osteons, which are cylinders of bone tissue. The osteons are arranged in a lattice-like pattern, and are held together by collagen fibers. The compact bone provides strength and rigidity to the skeleton.
Cartilage
is a type of connective tissue found in the body. It is a tough, flexible material that helps to support and protect the body’s joints. Cartilage is made up of a protein called collagen, and a mineral called calcium.
Function of Cartilages
Cartilage is a type of connective tissue found in the body. It is a tough, flexible tissue that forms pads between bones in the joints, and covers and supports the ends of bones where they meet other bones. It also lines the windpipe and other airways. Cartilage is made up of cells called chondrocytes. These cells produce a tough, elastic material called cartilage.
Fluid-Connective Tissue
Fluid-connective tissue is a type of connective tissue that contains fluids and proteins. This type of tissue is found in the lymph nodes, spleen, and bone marrow.
