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Blood and Immune Systems for IHS Unit 4

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The document discusses the blood and immune systems. It describes that blood is made up of red blood cells, white blood cells, and plasma. Red blood cells carry oxygen around the body using hemoglobin, while plasma carries nutrients and waste. White blood cells help fight pathogens as part of the immune system. Together, the blood and immune system work to maintain homeostasis by transporting substances and defending the body.

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Blood and Immune System IHS Unit 4

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Learning Targets โ€ข Identify key elements of the blood and immune system. โ€ข Discuss functions of these systems as they relate to homeostasis.

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Blood! โ€ข An adult person has about 5 liters of blood. โ€“ It is made primarily in the bone marrow. โ€“ It has three components (red blood cells, white blood cells, and plasma) โ€“ It has the function of carrying all sorts of stuff around the body.

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Red Blood Cells โ€ข These are flattish cells that carry oxygen. โ€“ Oxygen on carried on a protein called hemoglobin (has iron). โ€“ Red blood cells have no nucleus. โ€“ Red blood cells are made in bone marrow, and are recycled by the spleen. โ€“ People with two few (or malformed) red blood cells have a disease called anemia.

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Plasma โ€ข This is the liquid part of the blood. โ€“ It carries water, electrolytes, proteins, nutrients, hormones, clotting factors and waste products around the body. โ€“ Plasma sometimes leaks out of capillaries, and is picked back up by the lymph vessels. โ€“ When blood is put in a test tube, the plasma will rise the top, and is clear and yellow-tinted.

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The Immune System โ€ข This is our defense system against pathogens. โ€“ It is incorporated into every system of the body. โ€“ Immune cells are present in most body tissues. โ€“ The immune system also has itโ€™s own special vessels called lymph vessels that run through body. โ€“ White blood cells are one of the major parts of the immune system.

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White Blood Cells โ€ข These are cells that travel in the blood to kill pathogens. They are made in bode marrow or in lymph nodes. โ€“ They increase when infection is present. โ€“ There are many types of white blood cell to fight different kinds of pathogen. โ€“ Cancer of white blood cells is called leukemia.

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Lymph Vessels โ€ข These are the slow-flowing vessels that carry lymph. โ€“ Lymph is a fluid made up of plasma leakage, and โ€œmessโ€ made by immune response around the body. โ€“ Lymph nodes are found along the vessels, which fight pathogens that may be present and produce white blood cells and antibodies.

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Maintaining Homeostasis Blood โ€ข Blood is the bodyโ€™s primary delivery system. โ€ข It carries nutrients, oxygen, and waste products to their destination in the body. โ€ข It helps the body function by moving hormones and immune cells around. Immune โ€ข The immune system is our protection from pathogens. โ€ข Cells that are part of the immune system are found in most tissues. โ€ข A primary part of the immune system travels in the blood: white blood cells.

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Blood and Immune Systems for IHS Unit 4

  • 1. Blood and Immune System IHS Unit 4
  • 2. Learning Targets โ€ข Identify key elements of the blood and immune system. โ€ข Discuss functions of these systems as they relate to homeostasis.
  • 3. Blood! โ€ข An adult person has about 5 liters of blood. โ€“ It is made primarily in the bone marrow. โ€“ It has three components (red blood cells, white blood cells, and plasma) โ€“ It has the function of carrying all sorts of stuff around the body.
  • 4. Red Blood Cells โ€ข These are flattish cells that carry oxygen. โ€“ Oxygen on carried on a protein called hemoglobin (has iron). โ€“ Red blood cells have no nucleus. โ€“ Red blood cells are made in bone marrow, and are recycled by the spleen. โ€“ People with two few (or malformed) red blood cells have a disease called anemia.
  • 5. Plasma โ€ข This is the liquid part of the blood. โ€“ It carries water, electrolytes, proteins, nutrients, hormones, clotting factors and waste products around the body. โ€“ Plasma sometimes leaks out of capillaries, and is picked back up by the lymph vessels. โ€“ When blood is put in a test tube, the plasma will rise the top, and is clear and yellow-tinted.
  • 6. The Immune System โ€ข This is our defense system against pathogens. โ€“ It is incorporated into every system of the body. โ€“ Immune cells are present in most body tissues. โ€“ The immune system also has itโ€™s own special vessels called lymph vessels that run through body. โ€“ White blood cells are one of the major parts of the immune system.
  • 7. White Blood Cells โ€ข These are cells that travel in the blood to kill pathogens. They are made in bode marrow or in lymph nodes. โ€“ They increase when infection is present. โ€“ There are many types of white blood cell to fight different kinds of pathogen. โ€“ Cancer of white blood cells is called leukemia.
  • 8. Lymph Vessels โ€ข These are the slow-flowing vessels that carry lymph. โ€“ Lymph is a fluid made up of plasma leakage, and โ€œmessโ€ made by immune response around the body. โ€“ Lymph nodes are found along the vessels, which fight pathogens that may be present and produce white blood cells and antibodies.
  • 9. Maintaining Homeostasis Blood โ€ข Blood is the bodyโ€™s primary delivery system. โ€ข It carries nutrients, oxygen, and waste products to their destination in the body. โ€ข It helps the body function by moving hormones and immune cells around. Immune โ€ข The immune system is our protection from pathogens. โ€ข Cells that are part of the immune system are found in most tissues. โ€ข A primary part of the immune system travels in the blood: white blood cells.