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) steer trunk systems Cardiovascular - Heart The boldness is a knock-down(a) 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 blackguard cage. The promoter is a double pump, each incline consisting of a muscular upper sleeping room (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 frame; the left chamber has a bigger muscular groyne than the new(prenominal) chambers and is stronger, so it is able to pump the line of credit the full-page 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. house is forced up into the Aorta ( single of the large arteries) the Aorta splits into two furcate unwraps, wholeness goes up to the head and brain (upper part of the body) and one goes down (to the lower part of the body) gillyflower travelling expert about the body is called systemic circulation. The blood from these arteries feeds the organs and systems (cells & tissues).

at a time the blood has given up all its oxygen it makes its path stomach by the heart, through the veins. Blo od from the lower part of the body enters th! e heart through the inferior 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 judges (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 artery (this is called the...If you extremity to get a full essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper