Which substance does stimulates the formation of platelets? A-Erythropoietin B-I

Question

Which substance does stimulates the formation of platelets?

A-Erythropoietin

B-Immunoglobulins

C- Thrombopoietin

D- Cytokine

The hemopoietic growth factor is a hormone involved in proliferation of progenitor cells.

T/F

After testing your blood in the lab, you found that your red cells agglutinated with both anti-A and anti-B antisera. This means that you___________.

A- Have A and B antigens on your RBC

B- Have anti-A and anti-B antibodies in your plasma

C- Are AB positive

D- All of the above

E- None of the above

A megakaryoblast will develop into___________.

A- A red blood cell

B- A while blood cell

C- A platelet

D- None of the above

Which statement does not describe a component of the RBC life cycle?

A- Ruptured RBCs are removed by macrophages in the spleen and liver

B- Heme is converted to bilirubin which ends up in the liver

C- Transferrin transports the iron in the blood

D- Urobilinogen is eliminated in the feces as stercobilin

E- Biliverdin is the protein that stores iron

Which white blood cell mainly destroy newly formed tumor cells?

A- T cell

B- Natural killer cells

C- B cell

D- Neutrophiles

Which of the following blood types is a person whose blood cells agglutinate by both anti-A serum and anti-B serum, but not by anti-Rh serum?

A- AB negative

B- AB positive

C- O negative

D- O positive

E- None of the above

Which of the following is a formed element found in blood?

A- Lymphocyte

B- Red blood cell

C- Platelet

D- White blood cells

E- All of the above

The extrinsic pathway of blood clotting _______________.

A- It is activated by tissue factor

B- It produces prothrombinase

C- It inhibits coagulation

D- A and b

E- B and c

Which of the following clotting factors is involved in strengthening and stabilizing a blood clot?

A- Factor XIV

B- Factor V

C-Factor VII

D- Factor XIII

E- Factor XI

Explanation / Answer

1. C Thrombopoietin

Thrombopoietin is a hormone produced by liver and kidney which stimulates the formation of platelets.

Erythropoietin stimulates the formation of red blood cells in bone marrow

Immunoglobulins also known as antibody is a Y shaped protein produced by plasma cells(WBC) used by immune system to defend pathogen

Cytokines are broad catogary of small protien with a role in cell signaling.

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