Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Blood Groups
The circulatory system
| Question | Answer |
|---|---|
| List 4 reasons that someone would require a blood transfusion. | An individual may suffer from (1) excessive blood loss, (2) some types of anemia, (3) leukaemia, (4) haemophilia or other conditions. |
| List the antibodies that would be present or produced from someone with B-positive blood. | Antibody A |
| Describe the process of agglutination. | (1) The mixing of blood types that are incompatible can cause the erythrocytes to clump together. (2) When antibodies on one RBC bind to antigen on other RBCs, forming globular to amorphous, grape like aggregates of RBCs. |
| Explain the importance of matching blood groups between the donor and recipients of a blood transfusion. | Blood types are important when it comes to transfusions. If you get a transfusion that does not work with your blood type, your body's immune system could fight the donated blood. This can cause a serious or even life-threatening transfusion reaction |
| Blood group O is known as the universal donor. Explain why this is valid. | The blood type does not have any antigens. This means that it is compatible with all blood types including A, B, AB and O. |
| Compare and contrast the ABO blood groups and the Rh blood groups. | Rh negative people don't usually possess antibodies against RhD (unless they have been previously exposed to it), whereas in the ABO group system if the antigen is absent from the red blood cell, the antibody against it is present in the plasma. |
| Explain why patients with severe bleeding receive plasma transfusions. | Plasma is the liquid part of the body's blood. It contains important proteins and other substances crucial to one's overall health. Plasma transfusions are used for patients with liver failure, severe infections, and serious burns. |
| List the antigens and antibodies involved in the ABO blood group system. | Type A and B antigens, and Type A and B antibodies. |
| Describe the sequence of events that occurs in blood clotting. | |
| Why is blood red? | RBCs contain hemoglobin, a protein that carries oxygen. Blood gets its bright red color when hemoglobin picks up oxygen in the lungs. As the blood travels through the body, the hemoglobin releases oxygen to the different body parts. |
| Explain why someone with an infected toe may experience a lump in their groin. | |
| People living near sea level have about 5 million erythrocytes in 1mm^3 of blood. Those living at an altitude of 5500 m above sea level have about 7.5 million erythrocytes per 1 mm^3 of blood. Suggest an explanation for this difference. | |
| What is the most commonly transfused part of blood? | Packed red blood cells, the most commonly transfused blood component, can restore the blood's oxygen-carrying capacity. This component may be given to a person who is bleeding or who has severe anemia. |
Created by:
22JCHAL
Popular Physiology sets