The Lymphatic System Lab Essay

The immune system is made up of several types of cells that work together to fight infections. Lymph cells (called lymphocytes) are the main type of cell in the adaptive immune system. There are 2 types of lymph cells: T cells and B cells. When B cells respond to an infection, they change into plasma cells. The plasma cells are found mainly in the bone marrow—the soft, inner part of some bones. The plasma cells

• *Describe the structure and list the functions of the various epithelial tissues, including glandular epithelium. Reference Table 5.5.

1. Name the circulatory system that carries blood from the heart to the lungs and back to the heart.

White blood cells are part of the immune system and help defend the body from antigens.

4. Identify the endocrine organ from which a slide is prepared when viewing the slide with a microscope.

a. This function is mediated by T cells and B cells (memory cells) in our body via adaptive immunity. The adaptive immune system evolved in early vertebrates and allows for a stronger immune response as well as immunological memory, where each pathogen is “remembered” by a signature antigen. The adaptive immune response is antigen-specific and requires the recognition of specific “non-self” antigens during a process called antigen presentation. Antigen specificity allows for the generation of responses that are tailored to specific pathogens or pathogen-infected cells. The ability to mount these tailored responses is maintained in the body by memory cells. Should a pathogen infect the body more than once, these specific memory cells are used to quickly eliminate it. So basically killer T cells will identify antigens present on foreign cells. These antigens are not found in any of the cells inside our body. Therefore, T cells will identify them and kill them.

1-1: List the four types of tissue found in the human body and give an example of each.

3. How does the type of epithelial tissue relate to its function? Give at least 1 example of where you would find each type of epithelial tissue.

The Infection Fighter B cells and T cells are two important components of the immune system. They play a role in the inflammation associated with lupus. Both B cells and T cells associate immune cells called lymphocytes. Lymphocytes help fight infection. B cells and T cells are involved in the immune system's response to infection. Antigens are foreign bodies (such as bacteria and viruses) that stimulate the immune system to produce autoantibodies. When a T cell recognizes an antigen it will produce chemicals (cytokines) that cause B cells to multiply and release many immune proteins (antibodies). These antibodies circulate generally in the bloodstream, recognizing the foreign particles and triggering

The circulatory system and the lymphatic system are connected because the circulatory system transfers fluid to the entire body, and the lymphatic system is responsible for draining excess fluid from tissues and returning it to the circulatory system. These two systems work together to keep a balance inside our bodies and help with homeostasis. Both the circulatory system and lymphatic system transport waste products, both are responsible for transporting substances throughout the body, and they both carry

Our immune system protects the body from dangerous substances by recognizing and responding to antigens. Antigens are substances that are present on the surface of cells, fungi, bacteria, or viruses. Toxins, chemicals, drugs, and foreign particles such as a splinter can also be antigens. The immune system will recognize and destroys, or tries to destroy, substances that contain antigens.

The immune system consists of a defense system that guards the body against invasion from infections and other diseases. Normally, a healthy person's immune system has the capability to differentiate between its own cells and cells that represent threats to the health of the body. (Craft and Kanter, 2002). Autoimmune disease refers to a broad range of over 80 acute, long-lasting diseases that affect nearly every organ in the body. (Wrong Diagnosis.com, 2000).

T cells coordinate the body’s immune response and attack infected cells. They originate from bone marrow and populate the thymus gland. There are two types of T cells, helper T cells and killer T cells. Helper T cells are activated by macrophages. Some T cells activate B cells which make and release antibodies. Some activate Killer T cells which kill infected body

The immune system is not an actual system in the body but more a process of the body. The immune “system” works through the body’s lymphatic system. The human’s lymphatic system is an incredible and intricate factory, working day and night to keep the body free of foreign pathogens, bacteria, viruses, and other unwanted guests. Composed of lymph nodes and vessels, carrying lymph and waste though the body to be disposed of, its job is to locate and get rid of anything that has the potential to do damage to the body, or get rid of something that’s just not supposed to be there.

The immune system is our body 's defense system – it is vital to our body 's health and survival. We need the immune system to fight off bacteria, viruses, and other foreign, harmful substances - as well as our own cells that have become bad or even cancerous. There are several building blocks that make up the system as a whole, each just as important as the next, that work hand-in-hand. This includes the lymphatic system, biological molecules, antibodies, white blood cells, the tonsils, thymus, bone marrow, and the spleen. The tonsils and thymus both create antibodies, while bone marrow (among other things) creates white blood cells, which are crucial to fighting off infection. The lymphatic system carries waste as well as nutrients, and lymph fluid throughout the body in the blood stream. The lymph nodes act as a strainer or filter, so when the lymph fluid travels through, it traps virus 's, bacteria, and any other substance that 's foreign to your body. These things are then destroyed by lymphocytes, which are specialized white blood cells. The spleen, which also works as a filter, gets rid of aged or damaged platelets and blood cells, and also destroys bacteria and other harmful or foreign substances.