Blood
Question:

Blood is a fluid containing plasma (55%), transparent cells (45%), blood cells, hormones, and more. In many places, blood is referred to as tissue, such as "blood tissue" because blood, like any tissue, is built to fit the same function. Blood is one of the most important substances in the body.

Red blood cells (erythrocytes, Erythrocytes) are the main component of blood.  the main function of blood: carrying oxygen to all body cells and removing carbon dioxide from them.

Red blood cell diameter ranges from 6 - 8 μm and its thickness is 2 μm .

A white blood cell is a blood cell belonging to the immune system that protect the body against intruders and pathogens.WBCs  take part in dealing with various infections like bacteria, viruses, fungi, and parasites. The immune system and white blood cells also treat cancerous cells.

Click here to watch the full lesson about Blood - "the stuff of life"

 

 

 

Question:

In a hospital, three patients were admitted to the ER, a baby with a superficial scratch in his hand who is normally healthy, a young man suffering from dizziness, weakness and fatigue, and an adult with signs of inflammation.

The ER was so loaded with patients that caused the nurse to forget to mark the blood test tubes and paste names on them after taking blood from the three patients, by looking at a microscopic picture of the blood that had been done in the laboratory from those unmarked tubes, what is the most correct answers?

Fig #1

Fig #1

Fig #2

Fig #2

 

Fig #3

Fig #3

2 People tried to answer this question

Figure 1 shows relatively small red cells from the rest of the images, so this picture is for the baby because he is the youngest. In Figure 2, we see a high percentage of white blood cells whose function is protection against infections,so it belongs to the adult with infection. In picture 3 we see a normal case, so it belongs to the young man with tiredness and weakness, who seems to suffer from dehydration that causes fatigue and weakness.

In Figure 3, all cells are in their normal form, therefore it belongs to the baby. Figure 2 shows a high percentage of white blood cells whose function is protection from infections , so it belongs to the adult with inflammation. Figure 1 shows relatively small red cells that Their job is to transfer oxygen , in such a defective situation it indicates anemia case, and because of the feeling of tiredness and weakness that the young man feels ,it is considered to be symptoms of anemia , therefore the first picture belongs to the young man with tiredness and weakness.

The figures are not sufficient to draw conclusive conclusions.

Figure 1 shows relatively small red cells from the rest of the images, so this picture is for the baby because he is the youngest. In figure 3 we see a normal state, so this belongs to the adult, because In case it has inflammation we will not be able to detect it in a microscopic picture of the blood. The blood in figure 2 shows a high percentage of white blood cells, so there is a chance of leukemia - the blood cancer whose symptoms are appropriate for what the young man is suffering, so figure 2 belongs to the young man with weakness and tiredness.

Congratulations
Your answer is correct !!! :)

Sorry
Your answer is wrong

look at the pictures again and notice the size of the RBCs.

 

Sorry
Your answer is wrong

remember the WBCs role in the immune system.

Sorry
Your answer is wrong

Use the pictures to detect the difference between the three situations by the shape/size/number of the RBCs and WBCs .



Comments:
1.  Dabbour Zeinab (26.06.2017 am 04.21.06)
Blood

Dear Maram

I was very excited to delve into the subject of your question   because it was related to my profession and to my first degree - medical laboratory science.

 In my opinion, the scientific explanation',is of high quality,it explains the subject   in a superior and simple way that is suitable for those who are not medical laboratory workers, the video is attractively structured and related to the content of the question and I assume that those who read the scientific explanation and watch the video yes can answer the question. But I have some comments about the distractors: First of all, we learned in the lectures of the course that in multiple choice questions 

it is preferable that the distractors be of the same length, style and wording. But on the question you wrote, I saw that there was a significant difference in terms of length and wording between the first distractor and the rest. In addition, the last three alternatives  were very long, I would prefer to ask  the pupils to determine which case fits each picture without explaining the possibilities.

Zainab



History of edits
Edited BY: Maram Jamal Edit Date: 2017-05-29 14:51:35
Edited BY: Maram Jamal Edit Date: 2017-05-23 18:16:20
Edited BY: Maram Jamal Edit Date: 2017-05-23 18:14:45
Edited BY: Maram Jamal Edit Date: 2017-05-22 14:55:03
Edited BY: Maram Jamal Edit Date: 2017-05-22 14:51:01
Edited BY: Maram Jamal Edit Date: 2017-05-22 14:45:08
More Interactive Questions that might interest you In Biology