Platelets

Q.

What will happen if platelets were absent in the blood?

Q. Correct order of blood cells is (on the basis of number):

1. RBC>Platelet>WBC
2. Platelet>RBC>WBC
3. WBC>RBC>Platelet
4. RBC>WBC>Platelet

Q.

Name the components of the formed elements in the blood and mention one major function of each of them.

Q.

Red bone marrow is present in______.

1. Ribs, sternum, cranium

2. Ribs, sternum

3. Ribs, cranium

4. Ribs

Q.

What are the parts of a red blood cell?

Q. Which of the following statements is/are incorrect for platelets found in blood?

1. Platelets are non-nucleated in human just like RBC
2. They are formed from the megakaryocyte cells of bone marrow
3. Thromboplastin secreted by platelet helps in blood clotting
4. None of the above

Q. It is observed that heart cells do not exhibit cell division. Such cells do not divide further and exit phase to enter an inactive stage called of cell cycle. Fill in the blanks.

Q.

Name the components of the formed elements in the blood and mention one major function of each of them.

Q.

Mention any five functions of blood.

Q. Thrombopoiesis is the process of development of

1. red blood cells
2. platelets
3. B cells
4. white blood cells

Q.

These are colourless, disc-shaped blood cells without nuclei.

1. RBCs

2. WBCs

3. blood platelets

4. all of these

Q.

Thromboplastin required for blood clotting at the place of injury is released by _____.

1. thrombocytes
2. monocytes
3. basophils
4. neutrophils

Q.

How is heme produced?

Q.

Given below is a diagram of a human blood smear. Study the diagram and answer the questions that follow

(i) Name the components numbered ‘1’ to ‘4’.
(ii) Mention two structural differences between the parts ‘1’ and ‘2’.
(iii) Name the soluble protein found in part ‘4’ which forms insoluble threads during the clotting of blood.
(iv) What is the average lifespan of the component numbered ‘1’?
(v) Component numbered ‘1’ do not have certain organelles but are very efficient in their function. Explain.

Q. A reduction in the number of platelets can lead to

Q. In healthy humans, Lysozyme is present in all except:

1. Lacrimal secretions
2. Cerebro Spinal Fluid
3. Saliva
4. Respiratory tract secretions

Q. Lymph is prevented from flowing backwards by _________

1. T – lymphocytes
2. B - lymphocytes
3. Histiocytes
4. Plasma Cells

Q.

What are chondrin ?

Q.

Explain the functions of blood .

Q.

If spleen is graveyard of RBC then till now rbcs would have been accumulated over the spleen hence they must move out the body, so how they manage to do so?

Q. $1$ litre of oxygenated blood can deliver how much amount of $O_2$ to the tissue under normal conditions?

1. $50$ ml
2. $20$ ml
3. $159$ ml
4. $4$ ml

Q.

The condition of low WBC count in blood as a result of infection is called

1. Leucopenia

2. Leucocytosis

3. Anaemia

4. Granulocytoma

Q. Name the blood cells, when reduction in number can cause clotting disorder, leading to excessive loss of blood from the body

1. Thrombocytes
2. Leucocytes
3. Erythrocytes
4. Neutrophils

Q.

Identify the error in the given statement.

A long bone is hollow and its cavity is filled with many lymphatic vessels.

Q.

Bone marrow is made up of :

1. Muscular fibers and fatty tissue

2. Fatty tissue and areolar tissue

3. Fatty tissue and cartilage

4. Fatty tissue, areolar tissue, and blood vessels

Q.

Which of the following is not true about Hemophilia A?

1. It is caused by Vitamin K deficiency.

2. It is sex-gene-linked.

3. It is caused by a deficiency of any of the clotting factors.

4. It is seen mainly in females.

Q.

Given below is a set of five terms. Rewrite the terms in correct order in a logical sequence.

Fibrin, Platelets, Thromboplastin, Fibrinogen, Thrombin

Q. Discuss nature and role of platelets and lymph.

Q. Which one takes part in blood clotting

1. WBC
2. Thrombocytes
3. Lymphocytes.
4. RBC

Q. Very short answer type.
Is lymph more similar to blood plasma or to interstitial fluid and why?