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Map showing the extent of Mesopotamia. The geography of Mesopotamia, encompassing its ethnology and history, centered on the two great rivers, the Tigris and Euphrates.While the southern is flat and marshy, the near approach of the two rivers to one another, at a spot where the undulating plateau of the north sinks suddenly into the Babylonian alluvium, tends to separate them still more ...
In vertebrates, the circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the body. [1] [2] It includes the cardiovascular system, or vascular system, that consists of the heart and blood vessels (from Greek kardia meaning heart, and Latin vascula meaning vessels).
Arthropods and most mollusks have an open circulatory system. In this system, deoxygenated blood collects around the heart in cavities . This blood slowly permeates the heart through many small one-way channels. The heart then pumps the blood into the hemocoel, a cavity between the organs. The heart in arthropods is typically a muscular tube ...
Galen also made the mistake of assuming that the circulatory system was entirely open-ended. [16] Galen believed that all blood was absorbed by the body and had to be regenerated via the liver using food and water. [17] Galen viewed the cardiovascular system as a machine in which blood acts as fuel rather than a system that constantly ...
General Anatomy/Cardiovascular System; USMLE Step 1 Review/Cardiovascular; User:M3058565; Biomedical Engineering Theory And Practice/Physiolgocial System; Biomedical Engineering Theory And Practice/Biomechanics IV; The Organ Systems/circulatory; Main Page/sandbox; Usage on en.wikiversity.org Human heart; View more global usage of this file.
English: Map of the World from Sippar (Tell Abu Habba), Mesopotamia, Iraq, 6th century BCE. On display at the British Museum in London. On display at the British Museum in London. Date
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Diagram of the circulatory system. SVC/IVC - Superior/Inferior vena cava. The heart is the driver of the circulatory system, pumping blood through rhythmic contraction and relaxation. The rate of blood flow out of the heart (often expressed in L/min) is known as the cardiac output (CO).