What is the function of a compact bone cell?
Compact bone is made of concentric layers of osteocytes and bony matrix. Compact bones provide support to mammalian limbs. Moreover, it is a storehouse of calcium and hosphorus.
How would you describe the shape of compact bone?
Except at its edge, the osseous tissue of compact bone is arranged in cylindrical osteons. Each osteon is a compact cylinder of concentric lamellae. Osteocytes are found in lacunae, which are the cell-shaped empty spaces that prevent the solid, mineralized extracellular material of bone from crushing the osteocytes.
What is the structure of compact bone?
Compact bone consists of closely packed osteons or haversian systems. The osteon consists of a central canal called the osteonic (haversian) canal, which is surrounded by concentric rings (lamellae) of matrix. Between the rings of matrix, the bone cells (osteocytes) are located in spaces called lacunae.
How does the structure of compact bone differ from the structure of spongy bone?
Compact bone is dense and composed of osteons, while spongy bone is less dense and made up of trabeculae. Blood vessels and nerves enter the bone through the nutrient foramina to nourish and innervate bones.
Is Trabeculae found in compact bone?
Compact bone tissue is composed of osteons and forms the external layer of all bones. Spongy bone tissue is composed of trabeculae and forms the inner part of all bones.
What are the different functions of compact and spongy bone?
Spongy bone is used for more active functions of the bones, including blood cell production and ion exchange. However, compact bones also serve a function in storing and releasing calcium to the body when needed. The compact bone also provide strong mechanical levers, against which the muscles can create movement.
What are two characteristics of compact bone?
Compact bone, also called cortical bone, dense bone in which the bony matrix is solidly filled with organic ground substance and inorganic salts, leaving only tiny spaces (lacunae) that contain the osteocytes, or bone cells.
What is the structure and function of compact bone?
Compact bone (or cortical bone) forms the hard external layer of all bones and surrounds the medullary cavity, or bone marrow. It provides protection and strength to bones. Compact bone tissue consists of units called osteons or Haversian systems.
Why do we need both compact and spongy bone?
They are the bone tissues in animals that provide shape and support to the body. Both types of bones contain osteoblasts and osteoclasts that are necessary for creating bones. Both compact and spongy bones contain proteins like collagens and osteoids, which mineralize to help in bone formation.
What is the function of compact and spongy bone?
Does compact bone produce red blood cells?
Compact bone consists of yellow bone marrow in the marrow cavity whereas spongy bones consist of red bone marrow in the spaces between lamellae. The yellow bone marrow stores fat while the red bone marrow produces red blood cells and granular white blood cells.
What is the function of a compact bone?
The function of compact bone is to help to keep the levels of these minerals at constant within the blood. The arteries and veins that run through the Haversian canals provide a means to transport the minerals to and from the compact bone. The minerals are deposited for storage within the lamellae when blood levels are high.
Compact bone forms the dense outer shell of bones. It has a smooth and homogeneous appearance. Compact bone is dense and solid in appearance, whereas cancellous (spongy) bone is characterized by open space partially filled with needle-like structures.
How is a compact bone formed?
Compact bone is formed from a number of osteons, which are circular units of bone material and blood vessels. These units allow compact bone to remain hard and compact while still receiving nutrients from the body and disposing of waste through the same channels.