s a similarity between leukocytes and mature erythocytes? A Both may normally le
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s a similarity between leukocytes and mature erythocytes? A Both may normally leave the blood. B. Both are nucleated. C. Both may be phagocytic. None of the above. E. D. Both contain hemoglobin. 1t. Which is the cause of pernicious anemia? A. Insufficient vitamin C C. Abnormal hemoglobin. B. Low oxygen content E. None of the above. D. Blood loss 12 Which is due to the destruction or inhibition of the red bone marrow by drugs. chemicals, ionizing radiation or viruses? C. Thalassemia. B. Aplastic anemia. A. Pemicious anemia. E. None of the above. D. Iron deficiency anemia. t3. In a termble accident Howard destroyed all of his tymphoid stem cells. Which functions are still working? C. Blood clotting. A Kiling of parasitic worms. B. Macrophages. D. Transport of oxygen. E. All of the above 74: Which is CORRECT about hemostasis? A. The steps are in the order: vascular spasm, coagulation and then platelet plug formation. B. ATP attacts platelets to the injured area C. Most of the clotting factors are produced in the kidney D. The intrinsic pathway is stimulated by tissue cell trauma exposed to blood. E. None of the above. 15. Which blood types will have antibodies to the A antigen in its plasma? A. A and AB. ?.? andA. C. A and B. D. O and AB. E. None of the above. 16. Which is CORRECT about the heart? A. It is inferior to the diaphragm. D. It is superior to the trachea. B. It is medial to the lungs. C. It is posterior to the stemur E. None of the above. 17. Which is CORRECT about the heart? A. The heart is located in the pericardial cavity B. The epicardium is the same as the parietal pericardium. C. The endocardium is composed of simple cuboidal epithelium D. The myocardium contains smooth muscle E. None of the above.Explanation / Answer
10] Option [e] none of the above
Only the leukocytes leave the blood to form lymph.
Only mature erythrocytes are non nucleated and contain hemoglobin.
Only leukocytes may be phagocytotic.
11] Option [e] none of the above
Pernicious anemia is caused due to vitamin B12 deficiency . Vitamin B12 helps the body to make healthy red blood and also keeps the nerve cells healthy. When certain stomach cells , which make intrinsic factor necessary for uptake of Vitamin B12 from food, are damaged then this type of anemia occurs.
12] Option [b] aplatic anemia
Aplastic anemia is caused by exposure to certain chemicals , drugs, radiations, infections etc. It is neither hereditary nor contageous.
13] Option [e] all of the above
Lymphoid stem cell are those from which new lymph cells will be made. They are not involved in transport of oxygen and blood clotting since these are functions of the blood. Mature lymph cells are still present and so are the WBCs in blood . So the macrophage function will not be disturbed. Parasitic worms are not lilled by lymphocytes.
14] Option [a] vascular spasm, coagulation and then vascular plug formation
Hemostasis is a process which causes bleeding to stop. It is the first stage of wound healing. The vascular spasm causes the plasma protein fibrinogen to change into fibrin . Fibrin form a mesh at the site of bleeding and blood platelets plug the gaps in the mesh to completely stop the flow of blood.
15] Option [ e] none of the above
Blood group A will be incompatible only with the blood group B . Since in option [c] both A and B blood groups are mentioned so it cannot be correct because blood group B will be incompatible to blod group A.
16] Option [ b] it is medial to the lungs
The heart is enclosed within a pericardim and in between the lungs but slightly to the left side of the body.
17] Option [a] the heart is located within the pericardial cavity.
The heart is surrounded by a protective membrane called pericardium which is filled with a pericardial fluid. They together protect the heart from external shock, keep the heart muscles hydrated and prevent infection.
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