Quiz: Physiology

Which of the following is not found in plasma?

A a) Albumin B B) Glucose C C) Sodium D d) Hemoglobin

2- Which component of blood makes up most of the blood volume?

A A) Plasma B B) Leukocytes C C) Erythrocytes D d) Platelets

Which organ synthesizes new erythrocytes?

A a) Liver B B) Kidney C C) Spleen D d) Bone Marrow

Which of the following classes of leukocytes function(s) in phagocytosis?

A A) Neutrophils only B b) Lymphocytes onlya C C) Basophils only D d) Neutroĺphils and basophils

Which class of leukocytes develops into macrophages in tissue?

A a) Neutrophils B b) Eosinophils C c) Basophils D d) Monocytes

Which class of leukocytes has granules that stain preferentially with a red dye?

A a) Neutrophils B B) Basophils C C) Eosinophils D d) Monocytes

Which cytokine stimulates erythrocyte production?

A a) ADH B b) Erythropoietin C C) Von Willebrand factor D d) Renin

Which class of blood cell is the most abundant?

A a) Erythrocytes B b) Neutrophils C c) Basophils D d) Monocytes

Contact of blood with collagen triggers.

A a) Platelet aggregation. B b) Activation of the intrinsic clotting cascade. C c) Activation of the extrinsic clotting cascade. D d) Both a and b

What is the function of plasmin?

A A-Stimulate vasoconstriction of damaged blood vessels B b) Inhibit platelet aggregation in healthy blood vessels C c) Activate thrombin D Activate platelet aggregation

The activation of facier X occurs in

A A- the intrinsic pathway only B b. the extrinsic pathway only. C c. neither the intrinsie nor extrinsic pathway. D d. both the intrinsic and extrinsic pathways

Platlets

A A-form a plug by sticking to each other. B b release chemicals thal stimulate vasoconstriction C C-provide phospholipids needed for the intrinsic pathway D D- serve all of these Functions

Which of these sintements about plusmin is true?

A a. It is involved in the intrinsic clotting system. B b. It is involved in the extrinsic clotting system. C c. It functions in fibrinolysis. D d. It promotes the formation of emboli,

Regarding bleeding time which of the following is correct.

A A-Prolonged in prolonged antibiotic therapy. B B-Decreases in liver diseases. C C- Prolonged in hypercholesterolemin. D D- Prolonged in thrombocytopenia.

Regarding erythropoietin hormone which of the following is correct?

A A- Secreted by juxta-glomerular cells. B B-Stimulates thrombocytes formation. C C- Secreted by renal tubular epithelium. D D- Secreted by endothelial cells of peritubular capillaries.

Immunoglobulin G (IgG) has:

A A-4 heavy chains. B B-4 light chains C C-2 heavy & 2 light chains. D D- None of the above.

The coagulation time is prolonged in :

A A-Haemophilia. B B- Anaemia. C C- Polycythaemia. D D- Purpura.

Removal of the stomach can lead to all the following except:

A A- Marked digestive disturbances. B B- Megaloplastic anemia. C C-A fall in the plasma volume after a heavy meal. D D. Diminished Ca++ absorption and weak development of bones.

About Interferon, all the following is true except:

A A . The alpha interferon is released by leucocytes. B B-They activate viruses and stimullate cell proliferation, C C- The beta interferon is released by libroblasts, D D- The gamma interferon is released by the T-lymphocytes and NK cells.

A/G ratio Is Important in detecting:

A A. Cardiac disease B B. Nervous disease C C. Liver disease D D. Lung disease

A patient with platelet count 375000 /cubic mm and bleeding time 7 minutes, what mould you expect:

A A. Defective platelet function B B. Decreased platelet production C C. Increased platelet production. D D. Increased platelet function

Microcytic hypochromic anaemia occurs in;

A A. Vit B12 deficiency B B. Autoimmune hemolytic anemia C C. Iron deficiency anemia D D.Acute bleeding

A reduction of the blood level of factor VIII:

A A. Increase the bleeding time beyond the normal range. B B. Is a hereditary disease due to an abnormal gene on the Y chromosome.. C C. Causes prolongation of the clotting time. D D. Is commonly associated with petechial haemorrhage in the skin.

Increased RBCs fragility securs in all the following except:

A A.Sickle cell anemia B B. Thalassaemia C C. Iron deficiency anemia D D.Heriditary spherocytosis

heparin is anticoagulant:

A A.In vitro B B. In vivo C C. Both A&B D D.None of the above

A female carrier of haemophilia married too haemophilic male may produce any of the following except:

A A.A normal daughter B B.A carrier daughter C C.A haemophilic daughter D D.A haemophilic )

The concentration of Hb in ench RBC per deciliter is:

A A) 6 3 picograms. B b) 32 picograms. C c) 33 picogram. D d) 30 picogram.

Lack of intrinsic factor causes:

A a) Megaloblastic anemis. B b) Pernicious anemia. C C) Aplastic anemia D D) Thalassaemia

The normal volume of blood of a man weighing 70 kgs is:

A a) 2lit B B) 4.5 lit C c) 5.6 lit D d) 6.0 lit

Osmotic pressure exerted by plasma proteins, influence the exchange of:

A a. Gasses between blood and tissues. B b. Fluid between blood and tissues C c.Nutritive materials D d. Diapedisis.

Majority of clotting factors are produced in :

A a) Liver B b) Kidney C c) Heart D d) Brain

iron is stored in the body in the following EXCEPT:

A A) spleen B b) reticuloendothelial system C c) gall bladder D d)bone marrow

:Action of plasmin is:

A a) to remove calcium B b) antithrombin action C c) to stimulate heparin D d) to degenerate librin

Osmotic pressure of plasma is mainly maintained by :

A a) Albumin B b) alpha globulin C c) gamma globulin D d) prothrompin

Which is the most rare blood group?

A a) A Rh+ B b) AB Rh+ C c) AB Rh- D d) B Rh-

The relative proportion Hb in red cell is shown by:

A a. Colour index. B b. MCV, C c. MCHC. D d. PCV.

The synthesis of Hb begins in the:

A A) Basophil erythroblast. B b. Ortho erythroblast C c. Chromophil erythroblast D d. Reticulocyte.

Calcium is essential for all of the following steps in the clotting EXCEPT:

A A) Activation of factor XI by factor XII. B b. Activation of factor IX by factor XI. C c. Activation of factor X by factor IX. D d. Formation of thrombin from prothrombin.

The group which has no agglutinogen is:

A A) A group. B b) B group. C c) O group. D d) AB

Calcium is essential for all of the following steps in the clotting EXCEPT:

A A. Activation of factor XI by factor XII. B b. Activation of factor IX by factor XI. C c. Activation of factor X by factor IX. D d. Formation of thrombin from prothrombin.

14 is said to be agglutinated when the:

A a. RBCs are separated B b. RBCs are clumped together C c. WBCs are clumped together D d. Platelets are clumped together

During starvation plasma proteins are formed from:

A a. Tissue proteins. B b. Blood C C. Liver D d. Kidney

Blood platelets :

A A. Increase in number after injury. B B. Have a small single lobed nucleus C C. about 5 million /cubic mL D D. Are normally more numerous than white blood cells .

The commonest Rh antigen is:

A a.C B b. A C c. D D d. B

Edema is caused by the deficiency of:

A A-Albumin B b. a-globulin. C C-B-globulin D d. Fibrinogen

The main function of globulin Is:

A a. Maintenance of osmotic pressure. B b. Defense mechanism. C C.Water balance. D d. Iron balance.

46- Substance which causes platelets activation is :

A a. Fibrinogen. B b. Damaged collagen. C c. Prothrombin. D d. Prothrombin activation.

Prothrombin time in the plasma is prolonged by the administration of:

A A. Vit K. B b. Calcium glycinate. C c. Dicoumeral. D d. Folic acid.

Haemoglobin contains:

A A. One pratopoephorin ring and 4 ferrous ions B B. Four protoporphorin ring and one ferrous ion C C. Four protoporphorin rings and four ferrous ions D D.One pratoporphorin ring and one ferrous ian

Erythrocytes

A A. Are responsible for the major part of blood viscosity B B.Contain the enzyme carbonic anhydrase C C. Increase heir volume in hypertonic saline D D. Burst when mixed with 0.9% saline.

Sign in required