PHYSIOL 201 Chapter Notes - Chapter 7: Pulmonary Vein, Pulmonary Circulation, Extracellular Fluid
17 Feb 2019
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5l/minute of oxygenated blood is pumped into the systemic circuit. 5l/minute with each ventricle pumping an identical amount of blood. The amount returned to each atrium is the venous return and = 5l/min. The heart the pump: the right side of the heart contains deoxygenated or venous blood. This includes blood in the systemic venules and veins, blood in the ra and rv, and blood in the pulmonary arteries: the left side of the heart contains oxygenated or arterial blood . The high protein concentration generates colloid osmotic pressure (oncotic pressure). If you centrifuge blood, three layers will separate out: the most dense layer contains the red blood cells (erythrocytes, rbcs). This layer is also referred to as the hematocrit it is about 45% of blood volume. This is the plasma, which is about 55% of total blood volume. Plasma is mostly water, but dissolved in the water are nutrients, proteins, metabolic waste products, ions, gases, and hormones.
