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Ap Lab Essay Example
The Lymphatic System Laszlo Vass, Ed.D. Version 42-0024-00-01

Purpose

A. What was the purpose of doing this exercise?
The purpose of this exercise was to learn about the lymphatic system and its components. We learned about lymph, structure and function of lymph nodes, T-Cells, B-Cells, and Macrophages, and differentiating between antigens and antibodies.

Exercise 1: Microscopic Anatomy of Lymphatic Structures

A. Sketch of Reticular Connective Tissue Slide (Lymph Node). Describe the structures you observed on the slide.

B. Sketch of Spleen Slide: Describe the structures you observed on the slide.

C. Sketch of Tonsil Slide: Describe the structures you observed on the slide.

D. Sketch of Thymus Slide: Describe the structures you observed on the slide.

Exercise 2: Immunity and the Immune Respose

A. Describe what happened to the red and green food coloring after 45 minutes.
The food coloring spread throughout some of the dish.

B. Which sera was an antigen in section 2 of the dish? Describe what you observed in section 2 of the dish.
After 3 days, there was no visible line of precipitation evident and therefore the result is inconclusive.

C. Which sera was the antigen in the “unknown” sample used in section 3 of the dish? Describe what you observed in section 3 of the dish.

After 3 days, there was no visible line of precipitation evident and therefore the result is inconclusive.

Picture of the Agar Plate After 3 Days

Questions
Exercise 1: Microscopic Anatomy of Lymphatic Structures

A. How are lymph, lymphatic vessels and lymph nodes related?
Lymph, lymphatic vessels and lymph nodes are all part of the lymphatic system. Lymph vessels carry lymph throughout the body. Throughout the vessles are lymph nodes which fight infection.

B. What are the two major functions of the lymph nodes?
They clean and filter lymph before it goes back to the blood.
They produce

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