Lecture 12 – Cardiovascular Physiology VII

No gradient no diffusion all diffusion exchanges

Info icon This preview shows pages 2–3. Sign up to view the full content.

View Full Document Right Arrow Icon
No gradient = no diffusion All diffusion exchanges going on, concurrently bulk flow is happening Bulk from of protein free plasma across endothelium Protein free because proteins are too big to go through channels and are generally not  lipid soluble Distribution of extracellular fluid Freely exchanging everything except large proteins though the endothelial wall Plasma contains high [] of proteins which means the concentration of water is lower Net osmotic pressure for water to flow into the plasma from the interstitial fluid Normally there are 14L of plasma in the body 11L is in the interstitial fluid and 3L in the plasma Basically interstitial fluid acts as reservoir to supply fluid to the plasma if it is too  concentrated Can also receive fluid from the plasma Net movement of water from low concentration of solute to high concentration of solute If water is flowing due to high hydrostatic pressure, it can also “drag” along small solutes  and ions Concentration of small ions becomes equal on both sides Do not contribute to the osmotic pressure Hydrostatic pressure  local BP Low molecular weight ions are called crystalloids and HMW proteins are colloids Two Hydrostatic and Two Osmotic Pressures Hydrostatic pressures in capillary and interstitial fluid They counter one another ISF pressure results from the volume of the interstitial fluid Capillary hydrostatic pressure from local BP
Image of page 2

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

View Full Document Right Arrow Icon
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern