8 - DEXA

8 - DEXA - Bone Densitometry - - Bone Composition 45-70%...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Bone Densitometry - - Bone Composition 45-70% inorganic Calcium, phosphorus, magnesium crystalline form of apatite Ca 10 (PO 4 )(OH 2 ) 25-30% organic collagen cellular elements 5-25% water SEM of the SEM of the Hydroxyapatite Crystal Hydroxyapatite Crystal General Structure of Bone Cortex: outer portion, compact bone covered by periosteum Trabeculae: inner portion of spongy bone containing the blood forming elements (myeloid) or fatty marrow Periosteal membrane Cortex Cortex Periosteum Periosteum Marrow Marrow Bone Metabolic Response The combination of cortical bone together with spongy trabecular bone provides both structural strength and an extended surface, on which rapid changes in bone formation or resorption can respond to fluctuating metabolic needs . The metabolic responses of the skeleton mainly occur on trabecular bone surfaces. Aging and bone loss Bone loss might be seen in aged people...
View Full Document

This note was uploaded on 01/21/2012 for the course PDBIO 305 taught by Professor Woods,a during the Fall '08 term at BYU.

Page1 / 26

8 - DEXA - Bone Densitometry - - Bone Composition 45-70%...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online