BIOL251 Lab Report 2 (2)

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Biology

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Apr 3, 2024

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BIOL251 Human Anatomy & Physiology with Lab II Lab Report 2: Blood and Heart Experiment 3 – Microscopic Anatomy of Blood (36 points) © 2013 eScience Labs, LLC. All rights reserved. Instructions : Answer the following questions in complete sentences using correct grammar, spelling, and terminology. 1. What makes red blood cells unique, compared to other cells in the body? Red blood cells don’t have a nucleus. 2. How is new blood made? When a cell turns into a proerythroblast, it will then develop into a red blood cell 3. What is the main function of platelets? The platelets are used to clot your blood when you are bleeding 4. Describe how the body stops bleeding. The body stops bleeding by first narrowing the blood vessels to increase blood pressure. Then blood clotting begins, then coagulation of the blood. 5. Sickle cells are named so because of their characteristic shape. What problems can this cause? Their shape causes them to stick together making it harder to move through the blood vessels, restricting or blocking the movement of normal blood through small blood vessels. 6. Explain how the absence of a nucleus affects the RBC’s life span. Not having a nucleus makes the cells lose the ability to repair themselves if they get damaged. Experiment 4: Blood Typing Experiment (64 points) © 2013 eScience Labs, LLC. All rights reserved. Instructions : Enter your experimental data into Table 4 below. Take a picture of your experiment after your last measurement at two minutes and include your photograph in your lab report. Table 4: Blood Typing Results A (Blood Sample A) B (Blood Sample B) C (Blood Sample C) 1 (Anti-A Serum) Agglutination American Public University System 1 November 2015

BIOL251 Human Anatomy & Physiology with Lab II 2 (Anti-B Serum) Agglutination 3 (Anti-Rh Serum) Agglutination Blood Type: A- B- O- Attach Image 1: Labeled 12-Well Plate with Mixed Blood Sample and Typing Sera Instructions : Answer the following questions in complete sentences using correct grammar, spelling, and terminology. 1. What determines blood type? The presence of antigens on the surface of red blood cells, or their absence for that matter. 2. What type of blood antigens are expressed if a person is AB-? That blood cell has both A and B antigens, but no antibodies. 3. Why doesn’t a negative transfusion reaction occur the first time a Rh positive person is exposed to negative blood. That is because antibodies will be made against the Rh factor. American Public University System 2 November 2015

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