structure and function of blood pdf

Structure And Function Of Blood Pdf

On Sunday, May 30, 2021 8:33:55 PM

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Published: 30.05.2021

How does blood work, and what problems occur?

The liquid component of the blood in which the following blood cells are suspended:. Red blood cells erythrocytes. These carry oxygen from the lungs to the rest of the body. White blood cells leukocytes. These help fight infections and aid in the immune process.

Discuss the structure and function of erythrocytes red blood cells and hemoglobin. The erythrocyte , commonly known as a red blood cell or RBC , is by far the most common formed element: A single drop of blood contains millions of erythrocytes and only thousands of leukocytes Figure Specifically, males have about 5. In fact, erythrocytes are estimated to make up about 25 percent of the total cells in the body. Although leukocytes typically leave the blood vessels to perform their defensive functions, movement of erythrocytes from the blood vessels is abnormal. As an erythrocyte matures in the red bone marrow, it extrudes its nucleus and most of its other organelles.

Blood is a combination of plasma and cells that circulate through the entire body. It is a specialized bodily fluid that supplies essential substances around the body, such as sugars, oxygen, and hormones. Hematologists work to identify and prevent blood and bone marrow diseases, as well as studying and treating the immune system, blood clotting, and the veins and arteries. In the United States U. This constitutes less than one percent of total deaths from disease.

Blood function and composition

Blood is made of of several components, including red blood cells, white blood cells, platelets, and the plasma, which contains coagulation factors and serum. Blood helps maintain homeostasis by stabilizing pH, temperature, osmotic pressure, and by eliminating excess heat. Blood supports growth by distributing nutrients and hormones, and by removing waste. These cells deliver oxygen to the cells and remove carbon dioxide. Blood plays a protective role by transporting clotting factors and platelets to prevent blood loss after injury. These cells—including neutrophils, monocytes, lymphocytes, eosinophils, and basophils—are involved in the immune response.

Blood , fluid that transports oxygen and nutrients to the cells and carries away carbon dioxide and other waste products. Technically, blood is a transport liquid pumped by the heart or an equivalent structure to all parts of the body, after which it is returned to the heart to repeat the process. Blood is both a tissue and a fluid. It is a tissue because it is a collection of similar specialized cells that serve particular functions. These cells are suspended in a liquid matrix plasma , which makes the blood a fluid. If blood flow ceases, death will occur within minutes because of the effects of an unfavourable environment on highly susceptible cells.


(a) The structure of red blood cells, white blood cells, and platelets. (6) Blood cells and list the proteins of blood plasma and state their functions;. • name the​.


18.3 Erythrocytes

Find GPs in Australia. The formed elements are so named because they are enclosed in a plasma membrane and have a definite structure and shape. All formed elements are cells except for the platelets, which are tiny fragments of bone marrow cells. Leukocytes are further classified into two subcategories called granulocytes which consist of neutrophils, eosinophils and basophils; and agranulocytes which consist of lymphocytes and monocytes. The formed elements can be separated from plasma by centrifuge, where a blood sample is spun for a few minutes in a tube to separate its components according to their densities.

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4 Comments

  1. Natacha O.

    Blood is a body fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells.

    31.05.2021 at 06:29 Reply
  2. Fulvia M.

    A red blood cell has what is known as a biconcave shape.

    02.06.2021 at 14:40 Reply
  3. Gian R.

    Blood is a specialized body fluid.

    06.06.2021 at 12:57 Reply
  4. Memmon F.

    Db2 diagnosis guide and reference pdf the intel microprocessor barry b brey 4th edition pdf

    08.06.2021 at 18:25 Reply

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