P3 Outline the Gross Structure and Function of All the Main Body Systems

P3 Outline the gross structure and function of all the main(prenominal) head trunk systems Cardiovascular - Heart The boldness is a mesomorphic take organ and is the size of an adults closed fist. It is located in the pectoral cavity between the lungs and protected by the roast cage. The factor is a double pump, each align consisting of a muscular upper house (the atrium) and a lower chamber (the ventricle). (Stretch B, 2010, P199) The nucleus is split into 4 different sections, the ripe(p) side (tricuspid) of the means pumps deoxygenated line of reasoning from the veins to the lungs for oxygenation. The remaining side (bicuspid) pumps oxygenated broth from the lungs to the consistence; the left chamber has a bigger muscular groyne than the new(prenominal) chambers and is stronger, so it is able to pump the breed the whole of the body including the head and neck, as it is against the force of gravity. The two sides atomic number 18 detachd by a septum. The heart also contains many another(prenominal) veins and arteries. phratry is forced up into the Aorta ( single of the large arteries) the Aorta splits into two recess plowshares, integrity goes up to the head and brain (upper part of the body) and one goes down (to the lower part of the body) daub travelling and about the body is called systemic circulation. The blood from these arteries feeds the organs and systems (cells & tissues).

once the blood has given up all its oxygen it makes its means stomach by dint of the heart, through the veins. Blood from the lower part of the body enters the heart through the inferior ! mineral vein cava. Blood from the croak of the body enters the heart through the superior vena cava. Blood only flows in one direction through the heart; the two abide bys (bicuspid & tricuspid) ensure that this happens. When blood ends up in the right atrium, its passed down through the tricuspid value and into the right ventricle, the right ventricle only has to deliver blood a short distance to the lungs on either side of the heart. The blood is then forced up the pulmonary arterial blood vessel (this is called the...If you extremity to get a full essay, order it on our website: OrderCustomPaper.com

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