Essay about A&P 2 Lab

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Name: Kristen Jones


Lab Report 5: Lymphatic System – Lab Manual Pages 103-112

Relevant Websites to Help You with This Lab – Be sure to review these Websites before and during the completion of this Lab. • Antigen/Antibody Test Results • Human Anatomy Online : The Lymphatic System • Immune Response Animation • Lymph Node Animation Review

Your Lab Summary: What were the most significant 2 or 3 concepts you learned while doing this Lab?

Exercise 1: Microscopic Anatomy of Lymphatic Structures


A. How are lymph, lymphatic vessels and lymph nodes related? a. They are related because the lymphatic system is a network of tissues and organs. It is made up mainly of lymph vessels,
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Describe what you observed in section 3 of the dish.


A. Explain what is meant by “memory” as a characteristic of the immune response. a.

B. How does our immune response distinguish between our own cells and foreign invaders? 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.

C. What are lymphocytes and where are they produced? a. Lymphocytes are a type of white blood cell, which are an important part of the immune system. Lymphocytes can defend the body

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