Lymphatic vessels collect the small net loss of fluid

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Lymphatic vessels collect the small net loss of fluid and protein into interstitial space and return it to the cardiovascular system Circulatory shock occurs when blood perfusion of body tissues in inadequate. Most cases of shock reflect low blood volume, abnormal vasodilation, or pump failure Two Main Circulations of the Body The pulmonary circulation transports O2 poor, CO2 laden blood to the lungs for oxygenation and carbon dioxide unloading. Blood returning to the right atrium of the heart is pumped by the right ventricle to the lungs via the pulmonary trunk. Blood issuing from the lungs is returned to the left atrium by the pulmonary veins The systemic circulation transports oxygenated blood from the left ventricle to all body tissues via the aorta and its branches. Venous blood returning from the systemic circuit is delivered to the right atrium via the vena cava Systemic Arteries and Veins
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All arteries are deep while veins are both deep and superficial. Superficial veins tend to have numerous interconnections. Dural venous sinuses and the hepatic circulation are unique venous drainage patterns Developmental Aspects of Blood Vessels Fetal vasculature develops from embryonic blood islands and mesenchyme and functions in blood delivery by the fourth week. Fetal circulation differs from circulation after birth. The pulmonary and hepatic shunts and special umbilical vessels are normally occluded shortly after birth BP is low in infants and rises to adult values. Age related vascular problems include varicose veins, hypertension, and atherosclerosis.
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