Kinesiology 2230A/B Lecture Notes - Lecture 21: Vascular Resistance, Arteriole, Blood Doping
20 Mar 2018
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Effects of hydrostatic load: effects and movement of water throughout the vascular system, venous return is reduced when standing up. Exercise: edv, esv, and ef: ejection fraction increases- more effected with edv/esv. Sa node depolarises and leads to contraction: contraction: you see a steep increase in pressure but there is no change in volume --> isovolume contraction period (the tissue is contracting but there is no change in volume) Again (but this time during relaxation: once pressure drops, blood enters the right side of the heart, esv: lowest volume you see in the heart, preload: volume in heart ventricle at the end of filling it. Volume of blood that needs to move into ventricles: afterload: pressure that needs to be generate so you"re able to eject blood from the ventricles. Effects of afterload and preload on blood pressure. Increased resistance has the greatest effect: will increase the afterload and thereby increases systemic and diastolic pressure.
