Essay about A&P 2 Lab

Please answer these questions then place them in the drop box for this lab. Use Microsoft word if possible.

The immune system depends on the body’s structures to help it function. For instance, the skin acts as the “body’s first line of defense.” If a pathogen finds a breach in the skin barrier, it is the circulatory system that must now signal the immune system of the invader. Shortly after, white blood cells will be notified of the infection and will target and destroy the pathogen.

Complete Table 2 and answer Post Lab Questions 1 through 4 in complete sentences on the Week Three Lab Reporting Form.

1. (10 points) Write out your pre-lab prediction, including what evidence or previous knowledge you have to support that prediction.

This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor.

What is the goal of this lab? What question is it trying to answer, or what problem is it trying to explain?

Please fill out this report and submit it to the dropbox. Do not hand in your own form. It will not be graded and you will receive a zero for the lab.

This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor.

This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor.

The organs that make up the lymphatic and immune system are the tonsils, spleen, thymus gland, lymph nodes, and lymphatic vessels. White blood cells (leukocytes), red blood cells (erythrocytes), plasma, and platelets (thrombocytes) make up the blood. Lymphocytes are leukocytes (white blood cells) that help the body fight off diseases. Two types of lymphocytes are B cells and T cells. Lymphocytes recognize antigens, or foreign substances/matter, in the body. Lymphocytes are a classification of agranulocytes, or cells (-cytes) without (a-) granules (granul/o) in the cytoplasm. B cells are created from stem cells, which are located in the bone marrow. B cells respond to antigens by becoming plasma cells. These plasma cells then create antibodies. Memory B cells produce a stronger response with the next exposure to the antigen. B cells fight off infection and bacteria while T cells defend against viruses and cancer cells. A hormone created by the thymus gland called thymosin changes lymphocytes into T cells. The thymus gland is active when you are a child and slowly shrinks, as you get older. T cells bind to the antigens on the cells and directly attack them. T cells secrete lymphokines that increase T cell production and directly kill cells with antigens. There are three types of T cells: cytotoxic T cells, helper T cells, and memory T cells.

The most complex relationship of the lymphatic system is with the lymphoid and skeletal system. The complexity of this

There are three different types, T cells, B cells and natural killer cells. T cells are generated in the thymus gland and have a T-cell receptor molecule that is specialised and is found on the cells surface. T cells bind to antigens after it identifies them. The next type, B cells develop in the bone marrow and they have a B-cell receptor. This is a protein that is specialised, like T-cells it is means B-cells are able to attach to specific antigens that they identify. Both T-cells and B-cells have binding sites that are highly specific, this enable them to identify antigens that have invaded the body and stick to them, Lastly, natural killer cells have a cytotoxic nature which means they can destroy cells. Also, they have the ability to identify cells that have been infected by a virus and destroy them (Arrington,

Amid these little changes in lymphatic widths, after the NOS barricade in MLV of both matured

Describe the function of the lymphatic system and explain how its structure enables it to carry out its duties. Include what is lymph and how does it get into the lymphatic system, what happens to it along the way (and what structures are involved) and what happens to it when the lymph system is through with it...

The lymphatic system can be looked at as a waste system required in the human body. This waste system performs a specific circulation to keep the bodily fluids balanced. As blood flows through the human body, blood plasma spills in the tissues through the narrow walls of the capillaries. The part of the blood plasma that leaves is known as extracellular or interstitial fluid. Extracellular fluid contains amino acids, oxygen, glucose and different supplements required by tissue cells. Although the vast majority of this fluid leaks instantly over into the blood stream, a level of it, alongside the particulate matter, is left out. The lymphatic system expels this fluid and these materials from tissues, returning them through the lymphatic vessels to the blood stream, hence keeping a fluid imbalance that results in the organism’s death.