To discuss:
Effects of dietary vitamins A, C, and D on bone
Introduction:
Mineralization is a process (crystallization) that deposits phosphate, calcium, and other ions (from blood plasma) in the tissues of the bone as hydroxyapatite. This process is initiated by the osteoblast by laying collagen fibers on the surface of the osteon. These fibers are coated with minerals that make the matrix hard. Only if the concentration of the products (of above minerals) in the plasma reaches the critical value (solubility product), the hydroxyapatite is formed. Sometimes, calcification is repressed by some inhibitors found in the tissue. This inhibitor is deactivated by osteoblast, and it enables the precipitation of the salt in the matrix of the bone. The initially formed crystals perform like a “seed of crystals” that attract more phosphate and calcium from the plasma.
Want to see the full answer?
Check out a sample textbook solutionChapter 7 Solutions
Anatomy & Physiology: The Unity of Form and Function
- During the early years of space exploration our astronauts, who had been floating in space, would return to earth showing significant bone loss dependent on how long they were in space. Discuss how this might happen and what could be done to alleviate this condition.arrow_forwardExplain why bone remodeling is important, and give its stepsarrow_forwardA cartilaginous joint ________. has a joint cavity is called a symphysis when the bones are united by fibrocartilage anchors the teeth to the jaws is formed by a wide sheet of fibrous connective tissuearrow_forward
- A digestive system disease has inhibited Mr. Sumner's ability to absorb vitamins. Explain how the bones areaffected when there are inadequate levels of vitamins D, C and K.arrow_forwardIn child with rickets, the bones are not properly calcified. Which treated bone in examining the effects of heat and hydrochhloric acid on bones most closely resembles the bones of a child with rickets? Why?arrow_forwardwhat is known as the growth center of the bonearrow_forward
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage LearningAnatomy & PhysiologyBiologyISBN:9781938168130Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark WomblePublisher:OpenStax CollegeBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning