What 2 types of substances are stored in bone matrix?

What 2 types of substances are stored in bone matrix?

What two types of substances are stored in bone matrix? Bone matrix stores minerals and growth factors. What are two functions of a bone’s marrow cavities? Bone marrow cavities serve as sites for blood cell formation and fat storage.

What 2 materials are stored in bone?

Bones are made up of a framework of a protein called collagen , with a mineral called calcium phosphate that makes the framework hard and strong. Bones store calcium and release some into the bloodstream when it’s needed by other parts of the body.

What are the 2 main components of bone matrix What does each do?

The organic component of the bone matrix includes the collagen and ground substance whereas the inorganic component is the inorganic bone salts, mainly the hydroxyapatite. The collagen and ground substance form approximately 25% of the bone mass. Collagen, though, is the predominant organic component.

What does bone matrix store?

The inorganic matrix contributes approximately ∼65–70% of the wet weight of bone and serves as an ion reservoir storing approximately 99% of total body calcium, approximately 85% of phosphorus and between 40 and 60% of the body’s sodium and magnesium.

What are the two types of bone?

There are two types of bone tissue: compact and spongy. The names imply that the two types differ in density, or how tightly the tissue is packed together. There are three types of cells that contribute to bone homeostasis.

What are 2 body systems that are dependent on the chemicals stored by the bones?

The skeletal, endocrine, and digestive systems play a role in this, but the kidneys do, too. These body systems work together to maintain a normal calcium level in the blood (Figure 1).

What is ground substance in bone?

Bone is the hardest connective tissue. It provides protection to internal organs and supports the body. Bone’s rigid extracellular matrix contains mostly collagen fibers embedded in a mineralized ground substance containing hydroxyapatite, a form of calcium phosphate.

What are the minerals stored in bones?

Your body also needs calcium (as well as phosphorus) to make healthy bones. Bones are the main storage site of calcium in the body.

What are the 2 types of bone marrow?

Bone marrow is found in the center of most bones and has many blood vessels. There are two types of bone marrow: red and yellow. Red marrow contains blood stem cells that can become red blood cells, white blood cells, or platelets. Yellow marrow is made mostly of fat.

What are the most important minerals stored in bones?

The bone stores 99% of the body’s calcium and 85% of the phosphorus. It is very important to keep the blood level of calcium within a narrow range.

What is the inorganic component of bone matrix?

The inorganic (mineral) component of bone matrix is known to consist largely of hydroxyapatite [Ca 10 (PO 4) 6 (OH) 2], but its structure and properties are poorly understood.

What is the structure of the osteon matrix?

Within each osteon the matrix is deposited in concentric layers, each 2–3 μm thick, with a predominant fiber direction (like multilayer plywood). The central canal of each osteon contains bone cells, blood vessels and nerves. Trabecular bone, the second architectural form, is found at the ends of long bones and in the middle of the vertebrae.

What are the three types of cells in bone?

Bone consists of highly calcified, intercellular bone matrix, and three types of cells—osteocytes, osteoblasts, and osteoclasts. The outer surface of bone is covered by periosteum, which is bound to bone by bundles of collagen fibers known as Sharpey’s fibers, and the inner bone surface is lined with endosteum (Fig. 1 ).

What is demineralized bone matrix made of?

Demineralized bone matrix (DBM) has excellent osteoinductive and osteoconductive properties [71], and is prepared using bone decalcification agents such as ethylenediaminetetraacetic acid (EDTA) or acids (e.g., hydrochloric acid), thus exposing proteins (i.e., collagen and non-collagenous) and growth factors (mainly BMPs) [10, 72, 73].