Applied Science
BTEC Extended Diploma in Applied Science
Assignment Four:
Physiology & Function of Human Body Systems
Task One
Draw a large annotated diagram of the lymphatic system,
Identify the different types of cells of the lymphatic system and relate their structure to their function, including the role of tissue fluid and drainage. (P7)
Task Two
Make a clear written explanation detailing how the lymphatic system is involved in the protection of the human body and its role in the immune response
(M5)
Task Three
Explain the function of the lymphatic system when the organism is in a:
• Healthy state
• Diseased state (D3)
P7:
The primary cells of the lymphatic system are lymphocytes. There are three types of lymphocytes: T cells, B cells, and NK cells. T cells account for approximately 80 percent of the circulating lymphocytes. They are thymus-dependent and are the primary cells that provide cellular immunity. B cells, which are derived from the bone marrow, account for 10 to 15 percent of the circulating lymphocytes. They are responsible for antibody-mediated immunity. NK (natural killer) cells account for the remaining 5 to 10 percent of the circulating lymphocytes. They attack foreign cells, normal cells infected with viruses, and cancer cells that appear in normal tissues.
M5:
The Immune System Is a Complex Collection of Organs, Tissues, and Cells, the immune system consists of a complex network of organs and tissues, connected by blood and lymphatic vessels, that work together to prevent infection. Many of these systems are unleashed by activation of other parts of the immune system. The extensive interdependence of the players of the immune system can make it difficult for the beginning student to understand. To try to make it a bit easier, I will first describe the anatomy of the immune system. Many different organs and tissues in the body
Assignment Four:
Physiology & Function of Human Body Systems
Task One
Draw a large annotated diagram of the lymphatic system,
Identify the different types of cells of the lymphatic system and relate their structure to their function, including the role of tissue fluid and drainage. (P7)
Task Two
Make a clear written explanation detailing how the lymphatic system is involved in the protection of the human body and its role in the immune response
(M5)
Task Three
Explain the function of the lymphatic system when the organism is in a:
• Healthy state
• Diseased state (D3)
P7:
The primary cells of the lymphatic system are lymphocytes. There are three types of lymphocytes: T cells, B cells, and NK cells. T cells account for approximately 80 percent of the circulating lymphocytes. They are thymus-dependent and are the primary cells that provide cellular immunity. B cells, which are derived from the bone marrow, account for 10 to 15 percent of the circulating lymphocytes. They are responsible for antibody-mediated immunity. NK (natural killer) cells account for the remaining 5 to 10 percent of the circulating lymphocytes. They attack foreign cells, normal cells infected with viruses, and cancer cells that appear in normal tissues.
M5:
The Immune System Is a Complex Collection of Organs, Tissues, and Cells, the immune system consists of a complex network of organs and tissues, connected by blood and lymphatic vessels, that work together to prevent infection. Many of these systems are unleashed by activation of other parts of the immune system. The extensive interdependence of the players of the immune system can make it difficult for the beginning student to understand. To try to make it a bit easier, I will first describe the anatomy of the immune system. Many different organs and tissues in the body