Quiz 20 Key

Quiz 20 Key - because the adsorbed water enables it to...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
BME 201,   Quiz 20,   Nov.  1, 2011 Name:__________ Why does cartilage contain proteoglycans?                     Proteoglycans bind      cations      ( sodium potassium  and  calcium ) and      water     Water is absorbed  on the glycosaminoglycans, attracted by the many negative charges. Proteoglycans serve as lubricants . Aggrecan can cushion compressive forces
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: because the adsorbed water enables it to spring back after having been deformed. When pressure is exerted, as when the foot hits the ground while walking, water is squeezed from the glycosaminoglycan, cushioning the impact. When the pressure is released, the water rebinds. Thus aggrecan serves as shock adsorber ....
View Full Document

This note was uploaded on 01/18/2012 for the course BME 201 taught by Professor Schmidt during the Fall '11 term at Purdue.

Ask a homework question - tutors are online