Preview

Mammalian Heart

Satisfactory Essays
Open Document
Open Document
470 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Mammalian Heart
The Mammalian Heart
Analysis Questions

1. The job performed by the atria is collecting blood, while the job performed by the ventricles is pumping blood. Since the atria are thin-walled, they must function similar to thin bags that collect the blood. The ventricles have thick walls, which allow them to contract strongly to be able to pump blood to the rest of the body.
2. The deoxygenated blood must be pumped to the lungs, where it becomes oxygenated prior to be being pumped back to the rest of the body to deliver oxygen to organs.
3. It is necessary to pump blood from the lungs to the body because the body needs oxygen. Red blood cells must carry oxygen from the lungs to the rest of the body because the body cells within organs need oxygen to function.
4. The right side of the heart pumps the blood to the lungs. The aorta pumps blood to the entire rest of the body. The left ventricle of the heart collects blood and pumps blood throughout the body via the aorta. Based on my observations in Data Table 1, the right ventricle is thinner than the left because it only has to pump blood to the lungs, while the left ventricle has to pump blood to the entire rest of the body.
5. According to Table 2, arteries have thicker walls because the arteries contain muscles along the walls that help move the blood.

The Mammalian Heart
Analysis Questions

1. The job performed by the atria is collecting blood, while the job performed by the ventricles is pumping blood. Since the atria are thin-walled, they must function similar to thin bags that collect the blood. The ventricles have thick walls, which allow them to contract strongly to be able to pump blood to the rest of the body.
2. The deoxygenated blood must be pumped to the lungs, where it becomes oxygenated prior to be being pumped back to the rest of the body to deliver oxygen to organs.
3. It is necessary to pump blood from the lungs to the body because the body needs oxygen. Red blood cells must carry oxygen

You May Also Find These Documents Helpful

  • Powerful Essays

    A&P Ch 18 Hw

    • 1591 Words
    • 7 Pages

    • Left Ventricle – left inferior chamber of the heart that pumps oxygenated blood to the body…

    • 1591 Words
    • 7 Pages
    Powerful Essays
  • Good Essays

    The right ventricle pumps blood into the pulmonary artery, which carries it to the lungs.…

    • 968 Words
    • 5 Pages
    Good Essays
  • Good Essays

    The circulatory system and the respiratory system work closely together to ensure that organ tissues and systems receive enough oxygen. Oxygen is required for cellular functions such as cell respiration. This is so the body’s organs and cells can work at fully; it is done by releasing chemical energy with in stored foods. The air breathed in and held in the lungs is transferred to the blood. The blood is circulated by the heart, which pumps the oxygenated blood from the lungs to the body organs and returns with deoxygenated blood.…

    • 646 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    The heart pumps about ____ liters of blood a day and contracts about _____ times in a lifetime.…

    • 2802 Words
    • 12 Pages
    Powerful Essays
  • Good Essays

    Heart Functions

    • 336 Words
    • 2 Pages

    The left ventricle has a much thicker wall than the right ventricle because the left ventricle has to pump blood to the whole body while the right ventricle only has to pump blood to the lungs.…

    • 336 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    The blood then travel to the lungs where it will receive the oxygen to continue the process of circulation. Later, it drains out of the lungs via the pulmonary veins and then travels into the left atrium. While the blood is forced out through the aortic semilunar valve and into the aorta. The aorta and its branches carry blood to all the tissues of the body system. Reference, Essential of Human Anatomy and Physiology, 2012, by Elaine N. Marieb, 2012, Chapter 11, page 357, and Lab tutoring animation.…

    • 639 Words
    • 3 Pages
    Satisfactory Essays
  • Better Essays

    Anatomy 2 lab Guide

    • 2244 Words
    • 9 Pages

    Left Ventricle- receives oxygenated blood from the left atrium and pumps it into the largest artery in the systemic circuit called the aorta. The aorta then branches off to deliver the oxygenated blood to the body’s cells.…

    • 2244 Words
    • 9 Pages
    Better Essays
  • Better Essays

    Unit 5 Energy Metabolism

    • 2180 Words
    • 9 Pages

    The primary function of the respiratory system is the exchange of gases. The respiratory system allows oxygen and carbon dioxide exchange, this is necessary to sustain life. During the process of breathing air is inhaled and carbon dioxide is exhaled, this change of gases occurs in the alveoli. The inhaled oxygen passes into the alveoli and then diffuses into arterial blood. The waste rich blood from the veins releases carbon dioxide into the alveoli which is released through exhaling.…

    • 2180 Words
    • 9 Pages
    Better Essays
  • Satisfactory Essays

    Oxygen is carried through the blood via capillaries and veins (cardiovascular system) and is entered into the body by breathing it in (respiratory system) it then travels down the lungs (as explained in the first paragraph) until it reaches the alveoli, its then diffused into the blood but due to oxygen not being able to dissolve easily, most of it is carried by the haemoglobin in red blood cells and then transported into the parts that need a supply of oxygen e.g. if aerobic respiration is being carried, the working muscles will need a good supply of oxygen to prevent fatigue and to allow them to carry on working for longer until a limiting factor. Without the cardiovascular system then the oxygen taken into the lungs via the respiratory system will have nowhere to be transported to which means the heart and other vital organs wouldn’t be getting their supply of oxygen, so it shows that both systems are linked together for either to actually work.…

    • 419 Words
    • 1 Page
    Satisfactory Essays
  • Powerful Essays

    Gcse

    • 2908 Words
    • 12 Pages

    The human transport system is a system of tubes with a pump and valves to ensure one way blood flow. We need a transport system to deliver oxygen, nutrients and other substances to all our body cells, and take away waste products from them. The oxygenated blood (high in oxygen, red in color) comes to the heart from the lungs in the pulmonary vein; the heart pumps it to the aorta (an artery) to the rest of the body. The deoxygenated blood returns to the heart from the body in the vena cava (a vein), the heart pumps is to the lungs to get rid of the carbon dioxide. Oxygenated Blood: Red color, high oxygen low Carbon dioxide. Deoxygenated Blood: Blue color, low oxygen high Carbon dioxide. Did you notice that during one circulation, the blood went through the heart twice, this is why we call it double circulation. When the blood is flowing away from the heart, it has a very high pressure, when it is flowing towards the heart it has a lower pressure.…

    • 2908 Words
    • 12 Pages
    Powerful Essays
  • Good Essays

    1. The left atrium gets blood from the lungs then passes it into the left ventricle. The heart pumps oxygenated blood out through the large aorta and carries blood to the rest of the body. 2. The blood drains back to the heart then goes into the right atrium and the right ventricle pumps blood to the lungs.…

    • 1764 Words
    • 8 Pages
    Good Essays
  • Good Essays

    The heart lies in the thoratic cavity, organs associated with the heart are inferiorly, the hearts apex rested on the tendon of the diaphragm, superiorly, the great blood vessels, posteriorly the oesophagus, trachea and the left and right bronchus, laterally, the lungs and anteriorly the sternum and ribs. (Waugh& Grant 2014). The heart provides a constant blood circulation action and the blood vessels provide a network for the blood flow. The heart is the pump responsible for maintaining adequate circulation of oxygenated blood around the vascular network of the body, ( www.le.ac.uk) the right side of the heart pumps blood to the lungs (pulmonary circulation) and the left side receives oxygenated blood and supplies it to the rest of the body (systemic circulation). There are three types of blood vessel, arteries, capilleries and veins. Blood is pumped from the heart through the arteries at high pressure which could damage the tissue so it needs to go through the capillaires which are smaller low pressure blood vessels that are responsilbe for providing oxygen to the tissues, they also absord excess carbon dioxide and then deliver the blood into the veins which then supply the blood back to the heart. The heart generates its own electrical impulses, it does not rely on any other external mechanisn to make it beat. A normal heart rate is 60-80 times per minute, factors which can decrease or…

    • 800 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    5. To recognize that body tissues may differ in their blood demands at a given…

    • 5627 Words
    • 23 Pages
    Powerful Essays
  • Good Essays

    Once the red blood cell returns to the heart, it enters through the vana cava (vein) returning the deoxygenated blood from the upper part and the lower parts of the body to the heart. This large veins lead into the right atrium where the pumping heart forces the red blood cells through the tricuspid valve into the right ventricle. The valve stops blood from flowing backwards into the right atrium once it’s in the right ventricle they are then pumped through the pulmonary valve into the pulmonary artery and on to the lungs. The arteries carry blood away from the heart (always oxygenated apart from the pulmonary artery which goes from the heart to the lungs), they have thick, elasticated, muscular walls which allows them to expand (creating pulse) and to deal with the high blood pressure. Once the blood is delivered to the lungs via the capillaries (found in the muscles and lungs, microscopic – one cell thick blood vessels which are also very narrow to create very low blood pressure- adapted to maximise diffusion of gases) within the alveoli, an exchange of gases takes place between the gases inside the alveoli and the blood.Blood arriving in the alveoli has a higher carbon dioxide…

    • 717 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    Blood

    • 13536 Words
    • 55 Pages

    * Blood is pumped by the heart through blood vessels, which extend throughout the body.…

    • 13536 Words
    • 55 Pages
    Powerful Essays

Related Topics