Systems Physiology Lecture 2

Systems Physiology Lecture 2 - Systems Physiology 1...

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Systems Physiology 1. Heart(the pump)and vasculature(the plumbing) 2. Conduction system, cell types, automaticity, and refractoriness 3. Preload and afterload; starting length-tension relations Fig. 17-1 Role of circulatory systems in multi-cellular organisms Imagine zygote(day1) vs conceptors (day 18-21) and diffusion Cardiogenesis Angiogenesis Erythropoeisis (Develops in order top to bottom) Cardiovascular system develops first Immediately after conception Well developed circulatory system 1) Pulmonary system 2) Systemic system Fig 17-3 Left Ventricle to Right Atrium Coronary Circulation Coronary arteries first branch to come out of aorta Coronary Veins Coronary Sinus Kidneys Arterial System One set of capillaries Peritubular capillaries 3 rd pathway Splancnich circulation (complex) 2 capillary beds single capillary bed missed it… All Venous blood flow ends up at the right atrium Venous blood coming out these various organs is different chemically Blood in right atrium called venous add mixture Fig 19-2 Branching of vasculature in the submucosal microcirculation (typical) Fourth order venules – smallest of the veins
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