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[answered] Lab 10 Blood and the Heart BIO202L Student Name: ALVIN BOAR


Hey my name is Alvin I need help completing my Anatomy & Physiology II Lab through straighterline.com

You have helped me?before! But I am having trouble with A &P Labs II I ?received a 0% still on my labs and it's not the work submitted correctly.?? I hope you can help me as I am willing to do anything to get it done as soon as possible.? Is itunprofessional to get on my account but if I willing to pay I feel you won't be able to help me out fully without seeing the errors and why they won't grade my labs.? Maybe this can help you help me if you go to my straighterline account you can see exactly what's the problem.? When I go to submit my labs it goes directly to turnitin and it is base off of similarity.? I hope this can help if not please log on straighterline.com and my username is : a..d@bluefield.edu and password: Boa0628! go to A&P II labs and go to ANATOMY & PHYSIOLOGY II LAB click on course topics and you will see the labs, from there click on the lab scroll down to upload lab 10 blood and the heart and it will show the lab and with the errors.

I had a tutor on aceyourstudies who tried to help me and did for the most part but the labs attached is giving me serious issues.


Lab 10 Blood and the Heart BIO202L Student Name: ALVIN BOARD

 

Kit Code (located on the lid of your lab kit): KIT5219 Pre-Lab Questions:

 

?1. Research the process of erythropoiesis, and explain the role erythropoietin plays. Why is this

 

a popular ?doping? drug for athletes? ?

 

Erythropoietin is a hormone useful for the regulation of production of red blood cells. It is a

 

popular doping drug for athletes because when red blood cells are increased in the blood, the

 

oxygen supplied also increases. The red blood cells have haemoglobin which is the carrier of

 

oxygen.

 

?2. How would the hemoglobin content differ in a person living in Philadelphia (Elevation: 39

 

feet) compared to someone living in Denver (Elevation: 5280 feet)? Why? ?

 

More hemoglobin content is important for people living at elevated areas like Denver because

 

of the lower levels of oxygen as compared to areas such as Philadelphia. Experiment 1: Heart Valves and Pumps

 

Table 2: Experimental Observations

 

Observations (with valve) and mL H2O Displaced? Observations (without valve) and mL H2O

 

Displaced? There was no water flowing back from the

 

waste beaker due to the presence of the valve.

 

The total volume displaced was 49ml. A lot of the displaced water was able to

 

flow back from the waste beaker. The

 

displaced water volume was 21ml. Post-Lab Questions

 

?1. What happened when you pressed on the balloon stretched over the jar? What does this

 

result represent? ?

 

There was a pressure increase which led to the water moving up the straw. It was displaced to

 

the waste beaker.

 

?2. What structure in this experiment mimics a heart valve? ?

 

The heart valve is mimicked by the neck of the balloon.

 

?3. How did the valve influence the experimental results? If possible, indicate the difference (in

 

mL) in water displaced with the valve versus without the valve. Does the valve enhance the

 

water flow, and why? ?

 

A difference of about 28ml of water was recorded in the experiment with the valve and that

 

without. This shows that the valves are helpful in maintaining good flow without flow back.

 

?4. What other organs or body systems incorporate valves? How are they used? ?

 

Veins also have valves which prevents regurgitation or blood flowing backwards. Lab 10 Blood and the Heart BIO202L Lab 10 Blood and the Heart BIO202L Experiment 2: Effect of Chelation Therapy on Arterial Plaque Levels

 

Table 3: Egg Shell Observations

 

Day Beaker 1 Observations

 

(4% EDTA Solution) Beaker 2 Observations

 

(8% EDTA Solution) Beaker 3 Observations

 

(Pure H2O) 1 No change Slightly dissolved No change 2 No change Slightly dissolved No change 3 No change Slightly dissolved No change 4 The shell is slightly

 

dissolved Almost a quarter of the

 

shell had dissolved No change 5 Slightly dissolved About a quarter of the

 

shell had dissolved No change 6 Slightly dissolved More than a quarter had

 

dissolved No change 7 Slightly dissolved More than a quarter of

 

the shell had dissolved No change 8 Almost a quarter of the

 

shell was dissolved Almost half of the shell

 

had dissolved No change 9 About a quarter of the

 

shell is dissolved Almost half of the shell

 

was dissolved No change 10 About a quarter of the

 

shell is dissolved About half of the shell was

 

dissolved No change 11 More than a quarter of

 

the shell is dissolved More than half of the shell

 

had dissolved No change 12 More than a quarter of

 

the shell is dissolved More than half of the

 

shell had dissolved No change 13 About a half of the shell is

 

dissolved. The shell was almost

 

completely dissolved No change 14 About half of the shell is

 

dissolved. Completely dissolved No change Post-Lab Questions

 

?1. Describe the differences you observed between Beaker 1, Beaker 2, and Beaker 3. ?

 

Dissolving the shell was very slow in beaker 1. However, in beaker 2, the process of dissolving

 

was faster and it was completely dissolved. In beaker 3, there was no observable changes.

 

?2. Does Beaker 3 serve as a positive or negative control? How do you know? ? Lab 10 Blood and the Heart BIO202L Beaker 3 served as negative control because there was no change in the shell.

 

?3. Research and determine the composition of eggshell. State your findings below, and,

 

indicate why this composition makes eggshell a good material for EDTA to chelate. ?

 

The egg shell is composed of calcium carbonate. It is the reason why it is a good material for

 

EDTA to chelate.

 

?4. EDTA is a synthetic amino acid, which the body perceives as a foreign substance. EDTA is

 

therefore delivered to the kidneys and removed from the body in urine. Explain how this

 

process also leads to the removal of heavy metals. ?

 

Heavy metals are bounf by EDTA for it is a weak acid. On binding, a compound is formed and

 

this is how the heavy metals are removed from blood.

 

?5. Based on your results, do you believe chelation therapy would be an effective treatment for

 

atherosclerosis? Support your argument with experimental evidence. ?

 

Yes. Chelation will be able to dissolve the plaque inside the vessel. Through the experiment,

 

dissolving calcium acted as an example of how the the heavy metals will be dissolved during the

 

therapy. Experiment 3: Microscopic Anatomy of Blood

 

Post-Lab Questions

 

?1. What makes red blood cells unique, compared to other cells in the body? ?

 

One of the most important things making the red blood cells unique is their biconvave shape.

 

Also they do not have a nucleus. They have hemoglobin and are elastic.

 

?2. How is new blood made? ?

 

New blood is made through the creation of new red blood cells in the bone marrow. Also in the

 

bone marrow, about 70 percent of the granulocytes and platelets are made. There are sme

 

other organs which are involved in the making of blood cells. Lymphocytes which constitute 20

 

to 30 percent of the white blood cells are produced in the thymus, spleen and lymph nodes.

 

Liver, lymph nodes and the spleen produces the monocytes.

 

?3. What is the main function of platelets? ?

 

Platelets are useful in blood clotting which is essential I preventing bleeding.

 

?4. Describe how the body stops bleeding. ?

 

When a minor injury occurs, a natural means of preventing bleeding sets in. First, there is the

 

exposing of the collagen fiber which sends a signal for clotting to start. This will lead to the

 

platelets adhering to the cut through a chemical which attracts the platelets to the cut area. A

 

platelet plug is created and this leads to the bleading stopping shortly due to the sticking

 

together of fibrin which protects the internal wound. The clot is dissolved in a few days after the

 

healing of the blood vessels.

 

?5. Sickle cells are named so because of their characteristic shape. What problems can this

 

shape cause? ?

 

This shape leads to the red blood cells having difficulties going through the small blood vessels.

 

Because of this difficulty, organs will lack oxygen.

 

?6. Explain how the absence of a nucleus affects a red blood cell?s life span. ?

 

The lifespan of red blood cells is shorter because of the lack of the nucleus. They do not need

 

to divide and this makes the frequency of their production in the bone marrow faster. Lab 10 Blood and the Heart BIO202L Experiment 4: Blood Typing Experiment

 

Table 4: Blood Typing Results

 

A (Blood Sample A) B (Blood Sample B) Blood cells stick

 

Blood cells do not stick

 

together

 

together

 

2 (Anti-B Serum) Blood cells do not stick

 

Blood cells clog

 

together

 

3 (Anti-Rh Serum)

 

Blood cells clog

 

Blood cells do not clog

 

together

 

together

 

1 (Anti-A Serum) Blood Type: A, Rh- negative B, Rh-positive C (Blood Sample C) Blood cells clog

 

together

 

Blood cells clog

 

together

 

Blood cells clog

 

together

 

AB, Rh-negative Post-Lab Questions

 

?1. What determines blood type? ?

 

Blood type is partly determined by the ABO blood group antigens and partly by the rhesus

 

factor.

 

?2. What type of blood antigens are expressed if a person is blood type AB negative? ?

 

A and B

 

?3. Why doesn?t a transfusion reaction occur the first time an Rh negative patient is exposed to

 

Rh positive blood? ?

 

In the first transfusion, the immune system responds in a very mild manner. This is because the

 

antibody rate in the body is low. Experiment 5: Virtual Model ? The Heart Coloring Activity

 

?Insert Heart Image Here: ? Lab 10 Blood and the Heart BIO202L Experiment 6: Sheep Heart Dissection

 

?Insert photo of dissected sheep heart showing at least one atrioventricular valve with your name

 

clearly visible in the background: ? Lab 10 Blood and the Heart BIO202L

 


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