Explain the composition of blood.

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<–2/”>a >Blood circulates in our body and it transport substance like digested food from the small intestine to the other parts of the body. It carries Oxygen from lungs to the cells of the body. It also transport waste for removal from the body.

Major components of Blood are as follows:

  1. Plasma: Plasma is the liquid portion of your blood. Plasma is yellowish in color and is made up mostly of water, but it also contains proteins, sugars, HORMONES and salts. It transports water and nutrients to your body’s Tissues.
  2. RBC: Red blood cells represent 40%-45% of your blood volume. They are generated from your bone marrow at a rate of four to five billion per hour. They have a lifecycle of about 120 days in the body.

 

  1. WBC:

 

WBC-

(a)Granulocytes

(1)Neutrophils  Monocytes

(2)basophils

(3)eosinophils

 (b) agranulocytes

Lymphocytes –

(a)  B- Lymphy         (b)  T-lympho

 

Platelets:   Platelets also called thrombocytes, are cell fragments produced from megakaryocytes (special cells in the bone marrow).Blood normally contains 1,500,00-3,500,00 platelets mm-3.Platelets can release a variety of substances most of which are involved in the coagulation or clotting of blood.

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Blood is a complex fluid that circulates throughout the body, carrying oxygen and nutrients to the tissues and removing waste products. It is made up of four main components: plasma, red blood cells, white blood cells, and platelets.

Plasma is the liquid part of blood. It is made up of water, proteins, electrolytes, and other substances. Plasma helps to transport nutrients and waste products, and it also helps to regulate body temperature.

Red blood cells are the cells that carry oxygen to the body’s tissues. They are made up of hemoglobin, which is a protein that binds to oxygen. Hemoglobin is red in color, which is why blood is red. Red blood cells are produced in the bone marrow.

White blood cells are the cells that fight infection. They are made up of different types of cells, including neutrophils, lymphocytes, and monocytes. Neutrophils are the most common type of white blood cell. They are phagocytes, which means they can eat bacteria and other foreign particles. Lymphocytes are responsible for the body’s immune response. They produce antibodies, which are proteins that help to fight infection. Monocytes are able to transform into macrophages, which are large cells that can eat bacteria and other foreign particles.

Platelets are the cells that help the blood to clot. They are made up of proteins that form a mesh when blood is exposed to air. This mesh helps to stop bleeding. Platelets are produced in the bone marrow.

Blood is a vital fluid that is essential for life. It carries oxygen and nutrients to the tissues and removes waste products. It also helps to regulate body temperature and fight infection.

Plasma

Plasma is the liquid part of blood. It makes up about 55% of blood volume. Plasma is mostly water, but it also contains proteins, electrolytes, nutrients, hormones, and waste products.

The proteins in plasma help to maintain blood pressure and blood volume. They also help to transport nutrients and waste products. The electrolytes in plasma help to regulate the body’s fluid balance. The nutrients in plasma include glucose, amino acids, and lipids. The hormones in plasma help to regulate many body functions, such as Metabolism and Growth. The waste products in plasma include urea, creatinine, and uric acid.

Red blood cells

Red blood cells are the cells that carry oxygen to the tissues. They are made up of hemoglobin, which is a protein that binds to oxygen. Hemoglobin is red in color, which is why blood is red. Red blood cells are produced in the bone marrow.

Red blood cells are shaped like biconcave disks. This shape allows them to carry more oxygen than a round cell. Red blood cells also have a very thin membrane, which allows them to pass easily through the capillaries.

Red blood cells live for about 120 days. After they die, they are broken down in the spleen and liver. The iron from the hemoglobin is recycled, and the rest of the cell is used to make new red blood cells.

White blood cells

White blood cells are the cells that fight infection. They are made up of different types of cells, including neutrophils, lymphocytes, and monocytes. Neutrophils are the most common type of white blood cell. They are phagocytes, which means they can eat bacteria and other foreign particles. Lymphocytes are responsible for the body’s immune response. They produce antibodies, which are proteins that help to fight infection. Monocytes are able to transform into macrophages, which are large cells that can eat bacteria and other foreign particles.

White blood cells are produced in the bone marrow. They circulate in the blood and lymph. When they encounter an infection, they travel to the site of the infection and attack the bacteria or other foreign particles.

Platelets

Platelets are the cells that help the blood to clot. They are made up of proteins that form a mesh when blood is exposed to air. This mesh helps to stop bleeding. Platelets are produced in the bone marrow.

Platelets are small, irregularly shaped cells. They have a lifespan of about 10 days. Platelets circulate in the blood and attach to damaged blood vessels. When they attach to a damaged blood vessel, they release chemicals that attract other platelets. The platelets then form a plug that stops the bleeding.

Blood types

Blood is classified into four main types: A, B, AB, and O. These types are determined by the presence or absence of certain antigens on the surface of red blood cells. Antigens are proteins that the body’s immune system can recognize.

If a person receives blood that is not their own type, their immune system may attack the blood cells. This can lead to a serious condition called transfusion reaction.

Blood types are also important for blood transfusions. When a person needs a blood transfusion, they must receive blood that is compatible with their own blood type. Otherwise

Blood is a fluid that circulates throughout the body, carrying oxygen and nutrients to the tissues and removing waste products. It is made up of four main components: plasma, red blood cells, white blood cells, and platelets.

  • Plasma is the liquid part of blood. It makes up about 55% of blood volume and contains water, proteins, electrolytes, hormones, and nutrients.
  • Red blood cells are the cells that carry oxygen to the tissues. They make up about 45% of blood volume and contain hemoglobin, a protein that binds to oxygen.
  • White blood cells are the cells that fight infection. They make up about 1% of blood volume and come in different types, each with a different function.
  • Platelets are the cells that help blood to clot. They make up about 1% of blood volume and are essential for preventing bleeding.

Blood is a vital fluid that is essential for life. It carries oxygen and nutrients to the tissues and removes waste products. It also helps to fight infection and to clot.

Here are some frequently asked questions about blood:

  • What is blood?
    Blood is a fluid that circulates throughout the body, carrying oxygen and nutrients to the tissues and removing waste products. It is made up of four main components: plasma, red blood cells, white blood cells, and platelets.

  • What are the functions of blood?
    The functions of blood include:

  • Transporting oxygen and nutrients to the tissues
  • Removing waste products from the tissues
  • Fighting infection

  • Clotting

  • What are the components of blood?
    The components of blood include:

  • Plasma: The liquid part of blood. It makes up about 55% of blood volume and contains water, proteins, electrolytes, hormones, and nutrients.
  • Red blood cells: The cells that carry oxygen to the tissues. They make up about 45% of blood volume and contain hemoglobin, a protein that binds to oxygen.
  • White blood cells: The cells that fight infection. They make up about 1% of blood volume and come in different types, each with a different function.

  • Platelets: The cells that help blood to clot. They make up about 1% of blood volume and are essential for preventing bleeding.

  • What are the different types of blood?
    There are four main types of blood: A, B, AB, and O. Each type is determined by the presence or absence of certain antigens on the surface of red blood cells.

  • What is blood type?
    Blood type is a Classification of blood based on the presence or absence of certain antigens on the surface of red blood cells. There are four main blood types: A, B, AB, and O.

  • What is Rh factor?
    Rh factor is a protein that can be found on the surface of red blood cells. People who have this protein are Rh-positive, while people who do not have it are Rh-negative.

  • What is blood donation?
    Blood donation is the process of giving blood to a Blood Bank. Blood is used to help people who have lost blood due to surgery, injury, or other medical conditions.

  • What are the benefits of blood donation?
    The benefits of blood donation include:

  • Helping to save lives
  • Reducing the risk of iron overload
  • Boosting the immune system

  • Lowering the risk of heart disease

  • What are the risks of blood donation?
    The risks of blood donation are rare and include:

  • Bruising
  • Infection
  • Fainting

  • Allergic reaction

  • What are the requirements for blood donation?
    The requirements for blood donation vary by country and blood bank. In general, donors must be at least 17 years old, weigh at least 110 pounds, and be in good Health.

  • Where can I donate blood?
    Blood can be donated at blood banks, hospitals, and other medical facilities.

  • How often can I donate blood?
    Men can donate blood every 8 weeks, while Women can donate blood every 12 weeks.

  • What happens to my blood after I donate it?
    After you donate blood, your blood is separated into its components: plasma, red blood cells, white blood cells, and platelets. These components are then used to help people who have lost blood due to surgery, injury, or other medical conditions.

  • How can I learn more about blood donation?
    You can learn more about blood donation by visiting the website of the American Red Cross or the website of the Canadian Blood Services.

Blood is a fluid that circulates throughout the body. It is made up of four main components: plasma, red blood cells, white blood cells, and platelets.

  • Plasma is the liquid part of blood. It makes up about 55% of blood volume. Plasma contains water, proteins, nutrients, hormones, and waste products.
  • Red blood cells are the cells that carry oxygen throughout the body. They make up about 45% of blood volume. Red blood cells are made in the bone marrow and have a lifespan of about 120 days.
  • White blood cells are the cells that fight infection. They make up about 1% of blood volume. White blood cells are made in the bone marrow and have a lifespan of about 12 hours.
  • Platelets are the cells that help blood clot. They make up about 1% of blood volume. Platelets are made in the bone marrow and have a lifespan of about 10 days.

Blood is essential for life. It carries oxygen and nutrients to the tissues and removes waste products. Blood also helps to regulate body temperature and fight infection.

Here are some MCQs about blood:

  1. Which of the following is not a component of blood?
    (A) Plasma
    (B) Red blood cells
    (C) White blood cells
    (D) Platelets

  2. What is the main function of red blood cells?
    (A) To carry oxygen
    (B) To fight infection
    (C) To help blood clot
    (D) To regulate body temperature

  3. What is the main function of white blood cells?
    (A) To carry oxygen
    (B) To fight infection
    (C) To help blood clot
    (D) To regulate body temperature

  4. What is the main function of platelets?
    (A) To carry oxygen
    (B) To fight infection
    (C) To help blood clot
    (D) To regulate body temperature

  5. Blood is made up of about ____% plasma.
    (A) 55
    (B) 45
    (C) 1
    (D) 0.1

  6. Blood is made up of about ____% red blood cells.
    (A) 55
    (B) 45
    (C) 1
    (D) 0.1

  7. Blood is made up of about ____% white blood cells.
    (A) 55
    (B) 45
    (C) 1
    (D) 0.1

  8. Blood is made up of about ____% platelets.
    (A) 55
    (B) 45
    (C) 1
    (D) 0.1

  9. Blood is essential for life because it ____.
    (A) Carries oxygen and nutrients to the tissues
    (B) Removes waste products
    (C) Regulates body temperature
    (D) All of the above

  10. Blood is a fluid that circulates throughout the body. It is made up of four main components: plasma, red blood cells, white blood cells, and platelets.

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