Dictionary > Bone matrix

Bone matrix

Definition
noun
The intercellular substance of the bone tissue; that part of bone tissue comprised of organic and inorganic substances; the extracellular matrix of bone tissue
Supplement
The bone matrix is that part of the bone tissue and forms most of the mass of the bone. It is comprised of organic and inorganic substances. 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. About 90% of the organic component of the bone matrix is due to the type I collagen that is secreted by the osteoblasts and osteocytes. The ground substance is the nonfibrillar organic component of the bone matrix and it fills the space around the collagen fibrils and hydroxyapatite crystals. The ground substance contains glycoproteins, proteoglycans, and glycosaminoglycans.1 The organic component of the bone matrix helps resist tension whereas the inorganic component helps resist compression.2
See also:

Reference(s):

1 Henrikson, R., Kaye, G. & Mazurkiewicz, J. (1997). Histology. Baltimore: Williams & Wilkins. p.129

2 Eroschenko, V. & Fiore, M. (2008). DiFiore’s atlas of histology with functional correlations. Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins. p.80


You will also like...

genes controlling growth and development
Control of Growth & Development

Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a da..

Lights' Effect on Growth
Lights’ Effect on Growth

This tutorial elaborates on the effect of light on plant growth. It describes how different plants require different amo..

Electromagnetic spectrum of a brain
Sleep and Dreams – Neurology

While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities o..

Freshwater Ecology
Freshwater Ecology

Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of co..

Protein (illustration)
Protein Variety

The sequence of amino acids determines the type of protein. Protein is synthesized according to the sequence of nucleoti..

Origins of Life on Earth
Origins of Life on Earth

Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..