KINE 3012 : Lecture 23 Mar 18.pdf
30 Dec 2014
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Document Summary
Lymph nodes keep track of what is going on in the interstitial fluid. Allows immune system to be exposed to interstitial fluid. Large volumes of blood in the veins/venules, 60% capacitance vessels. Veins are distensible not because of elasticity, they have more fibrous/collagen proteins. They cannot recoil very well due to low levels of elastin, thus they remain in position until external forces change it. As you age, there is higher chance for the veins to pool blood at the bottom of the body. Compressive power of skeletal muscles to increase pressure/propel blood in both directions to lower pressure areas. Presence of venous valves, prevents blood from back flow. Sympathetic nerves release nor epinephrine will cause these cells to contract *venoconstriction, veno refers to venous blood vessels* Issue of getting the blood back to the heart to increase cardiac output. Each inspiration causes a negative pressure in the thorax, this causes forces air into the alveoli causing it to expand.
