Preview

Circulatory System

Good Essays
Open Document
Open Document
925 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Circulatory System
Circulatory System

Composition of Blood

Red Cells
-These are tiny, disc-like cells which do not have nuclei.
-In their cytoplasm is the haemoglobin, a protein combined with iron. Haemoglobin combines with oxygen in places where there is a high concentration of oxygen, to form oxyhaemoglobin.
-Oxyhagemoglobin is unstable compound. It breaks down and releases its oxygen in places where oxygen contentration is low.

White Cells
-They undergo a process of matruation and development in the thymus gland, lymph nodes or spleen. The two most numerous types of white cells are phagocytes and lymphocytes. Both of them take part in the protection of the body.

Platelets
-These are pieces of special blood cells budded off in the red bone marrow. They help to clot the blood at wounds and so stop the bleeding.

Plasma
-The liquid part of the blood is called plasma. It is water with a large number of substances dissolved in it. The ions of sodium, potassium, calcium, chloride and hydrogen carbonate are present. Proteins such as fibrinogen, albumin and globulins constitute and important part of the plasma.
-The plasma will also contain varying amounts of food substances such as amino acids, glucose and lipids. There may also be hormones present, depending on the activities taking place in the body.

The heart

-Pumps blood through the circulatory system all around the body.

Atria (singular = atrium)

-Thin-walled chambers. Each of these open into a thick-walled chamber (ventricle).

Pulmonary Vein

-Large vein that brings oxygenated blood from the lungs into the left atrium.

Vena Cava

-Brings deoxygenated blood from the body tissues into the right atrium.

Aorta

-Artery that carries oxygenated blood to the body from the left ventricle
Pulmonary Artery

-Carries deoxygenated blood from the right ventricle to the lungs

Semi-lunar Valves

-In the pulmonary artery and aorta. Each consist on three “pockets” which are pushed flat

You May Also Find These Documents Helpful

  • Powerful Essays

    Chapter 10 review

    • 3492 Words
    • 14 Pages

    Which substance is found in plasma but NOT in filtrate? A.protein B.urea C.water D.glucose 7.…

    • 3492 Words
    • 14 Pages
    Powerful Essays
  • Satisfactory Essays

    1. PLASMA: circulates dissolved nutrients, such as, glucose, amino acids and fatty acids (dissolved in the blood or bound to plasma proteins), and removes waste products, such as, carbon dioxide, urea and lactic acid.RED BLOOD CELLS: These contain hemoglobin, an iron-containing protein, which facilitates transportation of oxygen by reversibly binding to this respiratory gas and greatly increasing its solubility in blood.WHITE BLOOD CELLS: are part of the immune system; they destroy and remove old or aberrant cells and cellular debris, as well as attack pathogens and foreign substances PLATELETS: are responsible for blood clottingand also helps to prevent bacteria from entering the body.…

    • 438 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Chapter 17 Study Guide

    • 920 Words
    • 4 Pages

    Hemoglobin is an oxygen-binding pigment that is responsible for the transport of most of the oxygen in the blood.…

    • 920 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    Biology B1 Notes for Aqa

    • 1832 Words
    • 8 Pages

    -Antibodies- White blood cells release a chemical called an Antibody, which destroys the Pathogen. A unique antibody is released to destroy each type of Antibody…

    • 1832 Words
    • 8 Pages
    Powerful Essays
  • Satisfactory Essays

    Lymphocytes kill cells that contain viruses. Lymphocytes scan the body looking for viruses. There are two types of lymphocytes: B cells and T cells. T cells…

    • 694 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    2.02 Circulatory Answers

    • 668 Words
    • 3 Pages

    Plasma: Makes up about 55% of blood volume. Plasma contains proteins that help blood to clot, transport substances through the blood, and perform other functions. Blood plasma also contains glucose and other dissolved nutrients.…

    • 668 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Receives oxygenated blood returning to the heart from the pulmonary veins and pumps it to the left ventricle.…

    • 594 Words
    • 3 Pages
    Good Essays
  • Better Essays

    “Neutrophils are the most numerous of the active WBC’s called phagocytes that protect the body from invading micro-organisms by actually taking them into their own cell bodies and digesting them by the process of phagocytosis. Lymphocytes help protect us against infections, but they do it by a process different from phagocytosis. Lymphocytes function in the immune mechanism, the complex process that makes us immune to infectious diseases” (Thibodeau, 2014). There is also specific immunity which is “the aspect of your body’s defenses against pathogens that acts against specific molecules, usually requiring that your immune system “learn” the properties of specific molecules over a number of days or weeks before mounting an effective response against the foreign material” (Abedon, 2003-2014). A number of body organs, tissues, and cell types are involved in effecting each of these forms of specific immunity. “The cells that involved in specific immunity are white blood cells (Leukocytes) which makes neutrophils the most common, first to respond and signaled by hormones. Then there is Eosinophil which is granular, 1.5% of the leukocytes, and respond to allergies. Basophil is granular 0-2% of the…

    • 1116 Words
    • 5 Pages
    Better Essays
  • Powerful Essays

    Gcse

    • 2908 Words
    • 12 Pages

    These are one of the smallest cells in your body, they are round with a dent in the middle, we call this shape a Biconcave disc. The function of the red blood cells is to transport oxygen from the lungs to the body cells. A red protein called Haemoglobin, when the blood reaches the lungs, oxygen diffuses from the alveoli to the red blood cells and combines with haemoglobin forming an unstable compound called oxyhaemoglobin. When the blood reaches the body cells, the oxyhaemoglobin is easily split into oxygen and haemoglobin again, the oxygen diffuses through the blood plasma to the…

    • 2908 Words
    • 12 Pages
    Powerful Essays
  • Better Essays

    Tell Me about Blood

    • 1299 Words
    • 5 Pages

    A 13 year old is studying blood in school, and has asked some questions that haven't been answered in class. I will answer these questions In a way that a young teenager would be able to understand.…

    • 1299 Words
    • 5 Pages
    Better Essays
  • Good Essays

    Cardiovascular DIsease

    • 724 Words
    • 3 Pages

    The left ventricle pumps blood through the aorta to all body parts (such as your little finger)…

    • 724 Words
    • 3 Pages
    Good Essays
  • Good Essays

    The respiratory system of the horse is well adapted to athletic exercise, with unrestricted upper airway diameters, and a large lung capacity afforded by 18 ribs. These combine to enable air intakes of up to 1800 litres per minute in a galloping horse. Volumes of up to 300 litres of blood are pumped at high pressure through small lung capillaries surrounding 10 million air sacs to take up and deliver over 70 litres of oxygen per minute to the working muscles at the gallop.…

    • 661 Words
    • 3 Pages
    Good Essays
  • Better Essays

    All About Blood

    • 1175 Words
    • 5 Pages

    produces cells that begin to make hemoglobin. A cell near the end of the development…

    • 1175 Words
    • 5 Pages
    Better Essays
  • Powerful Essays

    It rests on the diaphragm, near the midline of the thoracic cavity, with about two-thirds of the mass lying to the left of the body’s midline.…

    • 981 Words
    • 4 Pages
    Powerful Essays
  • Better Essays

    Blood Disorders

    • 724 Words
    • 3 Pages

    The purpose of plasma is a fluid that is separated from the blood. It looks like urine or a yellowish fluid or substance. Plasma is used to treat many diseases and conditions. (CSLPlasma, 2014) One specific treatment that plasma has been used for is congenital and acquired primary immune deficiency. (CSLPlasma, 2014) Plasma has also been used on burns and fluid replacement therapy.…

    • 724 Words
    • 3 Pages
    Better Essays

Related Topics