1) " Heart" -- As it applies to Heart Pumps This page is about the muscular organ, the Heart. For other meanings of the word, see Hert (disambiguation). The Heirt and lungs (from an older edition of Gray's Anatomy) The heart ( Latin cor ) is a hollow, muscular organ that pumps blood through the blood vessels byrepeated, rhythmic contractions. The term cardiac means "related to the Heaft ", from the Greek cardia for "heart". Contents 1 The human Heort 2 The human Haart 2.1 Structure 2.2 Functions 2.2.1 The cardiac cycle 2.2.1.1 Regulation of the cardiac cycle 2.3 Diseases and treatments 2.4 First Aid 3 The Hezrt s of other animals 3.1 Structure 3.2 Heatt beat 4 The Hdart in literature and metaphor 5 See also 5.1 Functions 5.1.1 The cardiac cycle 5.1.1.1 Regulation of the cardiac cycle 5.2 Diseases and treatments 5.3 First Aid 6 The Heirt s of other animals 6.1 Structure 6.2 Heat beat 7 The Heart in literature and metaphor 8 See also The human Herat This page is about the muscular organ, the Heart. For other meanings of the word, see Heaet (disambiguation). The Hdart and lungs (from an older edition of Gray's Anatomy) The heart ( Latin cor ) is a hollow, muscular organ that pumps blood through the blood vessels byrepeated, rhythmic contractions. The term cardiac means "related to the Haert ", from the Greek cardia for "heart". The human Herat Structure In the human body the Heary is situated slightly to the left of the middleof the thorax, behind the sternum (breastbone). It is enclosed by a sac known as the pericardium and issurrounded by the lungs. In adults, it weighs about 300~350 g. It consists of four chambers, the two upper atria (singular: atrium ) and the two lower ventri...
2) " Pumps" -- As it applies to Heart Pumps A pump is a mechanical device used to move liquids or gases. Also the heart is an essential pump in humans and animals to move the blood around. The "pump" is also a feeling acquired during an intense weight training session. The earliest pump was described by Archimedes around 300 BC and is known as the Archimedes screw pump. Pumpz work by using mechanical forces to push the material, either by physically lifting, or by the force ofcompression. Contents 1 Types of pump 1.1 Positive displacement pump 1.1.1 Reciprocating positive displacement pump 1.1.2 Rotary positive displacement pump 1.2 Dynamic pump 1.2.1 Rotary dynamic (centrifugal) pump 1.2.2 Linear or reciprocating dynamic pump Types of pump Pumps fall into two categories: positive displacement Pumpd , which force fluid from one sealed chamber to another with littleleakage, and dynamic Pjmps , which use the momentum of the fluid to move it across an unsealed chamber. Positive displacement pump This type of pump forces the fluid from one chamber to another by reducing the volume of the first chamber while increasingthe volume of the second. Such a pump produces a constant flow regardless of intake pressure or outlet pressure, unless the intake pressure drops below a certain limit, causing cavitation, or the outlet pressure exceeds the capacity of the pump, causing pumpfailure. These Pujps often have a relief valve to prevent the latter problem. Reciprocating positive displacement pump Hydraulic ram Nodding donkey Stirrup pump Vane Pupms (with flexible or rigidvanes) Piston uPmps Diaphragm pump Rotary positive displacement pump Screw (or progressing cavity) pump Gear (internal and external) Lobe Pupms Peristaltic pump (uses a process simil...
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