CIRCULATORY SYSTEM ASSIGNMENT

CIRCULATORY SYSTEM

1. Study the following statements regarding blood pressure and select the correct ones.

      I) Normal diastolic blood pressure is 120mm Hg

     II) Normal systolic blood pressure is 80 mm Hg

    III) If the blood pressure of an individual is above 140/90, it is considered as hypertension

    IV) Blood pressure is measured in the brachial artery of an arm by using sphygmomanometer

          1) All                             2) I and II only                        3) I, II & IV only         4) III & IV only          

2. Lymph differs from blood plasma in the following feature                                                                      

          1) It lacks W.B.C                                                 2) It contains only few erythrocytes                          3) It has a higher concentration of proteins and other nutrients                                                                              4) It has much lower concentration of proteins and other nutrients                                 

3. The unique vascular connection that exists between the digestive tract and liver is called 

          1) Hepatic portal system                                      2) Coronary system      

           3) Renal portal system   4) Hypophyseal portal system

4. Select the correct pair of statements from the following

       I) In the wall of arteries tunica media is much thicker than in veins

      II) In the lumen of arteries endothelial lining gets double folded to form valves

     III) All veins of human body carry deoxygenated blood only

     IV) Veins contain only one elastic lamina inner to tunica media                                                              

          1) I &II                          2) II & III                       3) I & IV                       4) III & IV              

5. A fibrous strand which is present at the point of contact of the systemic and pulmonary arches is called

           1) Ductus arteriosus                                                      2) Ductus caroticus

           3) Ligamentum venosus                                                4) Ligamentum arteriosum                  

6. Match the following

           List - I                                                                           List-II

      A) Coronary artery disease                            I) Cessation of normal circulation of blood due            

                                                                                to sudden stoppage of heart contraction

      B) Angina pectoris                                             II) Due to low blood pressure

      C) Myocardial infarction          III) Due to narrowing of blood vessels to the heart

      D) Cardiac arrest                                             IV) Atherosclerotic heart disease                                               V) Localized death of heart tissue

       A     B     C      D                                                               A   B    C    D             

  1) IV    III      I      V                                                     2)    IV   II     I     III                                     

  3) IV    III     V      I                                                      4)    III    II     I    IV             

7. Assertion (A): The cardiac output of an athlete will be much higher than that of an ordinary person

  Reason(R): Human body has the ability to alter both stroke volume and heart beat rate  

  1) Both A and R are true and R is not the correct explanation of A

  2) Both A and R are true and R is the correct explanation of A

  3) A is true but R is false                                              4) A is false but R is true                              

8.        The mitral valve of the heart allows                                                                                                    

  1) Oxygenated blood to enter the left atrium                2) Oxygenated blood to leave the left atrium

  3) Deoxygenated blood to enter the right ventricle      

  4) Deoxygenated blood to leave the left atrium                     

9.        Arrange the following in correct sequence of the propagation of a cardiac action potential

  A) Purkinje fibres                 B) Sinoatrial node                   C) Right and left bundle branches    

  D) Atrioventricular bundle E) Atrioventricular node          F) Ventricular walls                             

  1) E-B-D-C-A-F                     2) B-E-A-D-C-F             3) B-D-E-C-A-F             4) B-E-D-C-A-F                  

10. Select the correct statements among the following                                                                      

  I) The first heart sound is produced in ventricular systole during which semilunar valves close and atrioventricular valves open.

  II) Atrial systole lasts for about 0.1 sec only but it accounts for about 30% of filling of the ventricles

  III) The second heart sound is produced in cardiac diastole during which the atrioventricular valves close and semi lunar valves open

IV) Chordae tendineae prevent the cusps of the atrioventricular valves from bulging too far into  atria during ventricular systole                                                                                                                                                        I) I & II                                  2) I & III                                  3) II & IV                    4) All

11. Which of the following is true pertaining to lymphatic system?

  1) Lymph vessels are non-valvular                         2) Thoracic duct the largest lymphatic vessel

  3) Lymphatic system is of closed type                   4) Chyliferous duct empties its fluid into arteries

12. Read the following

  A. Prothrombin                     B. Proconvertin     

  C. Christmas factor              D. Stuart-Prower factor

  Identify the factors formed in the liver in the presence of vitamin K

  1) A and B only                     2) A, B and C only   3) B and D only         4) A, B, C and D

13. Assertion (A): Heart strings have a critical importance in the heart of human being by

                                      extending between atrio-ventricular valves and papillary muscles

  Reason (R)    : Heart strings allow the cusps of atrio-ventricular valves to bulge too far

                                     into atria during ventricular systole

  1) Both (A) and (R) are true and (R) is the correct explanation of (A)

  2) Both (A) and (R) are true but (R) is not the correct explanation of (A)

  3) (A) is true but (R) is false            4) Both (A) and (R) are false

14. If the foramen ovale does not close properly in a child, it is called

             1) patent fossa ovalis                                   2) patent foramen ovale                  

            3) ductus arteriosus                                                      4) ductus caroticus

15. Which of the following statement is correct?

  1) Atrial systole lasts for about 0.3 seconds

  2) Dup is the first heart sound generated when semilunar valves are closed

  3) Systemic circulation is considered as greater circulation

  4) AV valves are closed when ventricular pressure is decreased

16. The following can secrete inflammatory mediators

  A. Basophils                          B. Neutrophils         C. Mast cells             D. Platelets

  1) A and B only                     2) A, B and C           3) A and C only         4) A, C and D

17.  Intrinsic pathway of blood clotting begins with the activation of

  1. Factor XII                          2. Factor XIII                 3. Factor III                   4. Factor VII

18.  Large conical muscular ridges arising from the inner surface of heart ventricles are

  1. Chordae tendineae             2. Heart strings         3. Papillary muscles     4. Purkinje fibres

19. Assertion (A): Heart strings have a critical importance in the heart of human being by                                     extending between atrio – ventricular valves and papillary muscles.

      Reason (R):   Heart strings prevent the cusps of the atrio ventricular valves from bulging to far into atria during ventricular diastole.                                                      

           1) Both A and R are true and R is the correct explanation of A                                               

           2) Both A and R are true and R is not the correct explanation of A

          3) A is true but R is false                                   4) A is false but R is true        

20. Match the following

            List – I                                                                        List – II

           A) Coronary artery disease                I) Renal insufficiency

           B) Pneumonia                                       II) Atherosclerotic heart disease

           C) Jaundice                                                      III) Accumulation of mucous in alveoli

           D) Renal failure                                               IV) Hepatitis

            A         B          C         D                                 A         B          C         D

           1)    III      II      IV      I                                       2)     II      III     IV      I

          3)    II       III      I       IV                                      4)    IV     III       II      I

21. During blood coagulation, factor XIII converts  

           1) Soluble fibrinogen into insoluble fibrin          2) Insoluble fibrin into soluble fibrin

           3) Soluble fibrinogen into soluble fibrin             4) Soluble fibrin into insoluble fibrin

22. The role played by Heparin and ions during haemostasis are  

           1) Both acts as antithrombin                                2) Both promote thrombin activity

           3) Heparin promote haemostasis, but ions prevent haemostasis

          4) Heparin prevents haemostasis, but promote haemostasis

23. Blood received into the heart from its walls flows through these valves sequentially                1) Tricuspid  Semilunar  Bicuspid

           2) Semilunar  Tricuspid  Bicuspid

           3) Thebesius  Bicuspid  Semi lunar  Tricuspid

          4) Thebesius  Tricuspid  Semilunar  Bicuspid

24. Which of the following hormone does not increase the heart rate and cardiac out put

           1) Thymosin                  2) Thyroxine                 3) Epinephrine               4) Nor – epinephrine           

25. The thoracic duct of lymphatic system is the largest lymphatic vessel (Lymph duct) empties the lymph into venous system at         

           1) The junction of right subclavian vein and inter jugular vein

           2) Into right subclavian vein

          3) At the junction of left subclavian vein and left internal jugular vein

           4) Into the left lymphatic duct

26.    26.       trinsic pathway of blood  clotting is initiated by the factor

1)XII                                  2)VII                                  3)III                                     4)VIII

27.    27.       Incorrect statement about human lymphatic system in the following is

1)Chyliferous duct is the largest lymphatic duct in the body

2)Chyliferous duct empties lymph into venous system at the junction of left internal jugular and left subclavian veins

3)Lymph from right side of the body, collected by right lymphatic duct is also deposited at the junction of internal jugular and left subclavian veins

4)Lymph is a component of blood that diffuses into tissues to supply nutrients

28.   28.        Assertion(A): Greater and lesser circulations add oxygen to blood and transport nutrients to tissues, respectively

Reason(R ): Greater circulation includes flow of blood between heart and lungs and lesser circulation includes flow of blood between heart and tissues

1)A & R are true R explains A                                     2)A&R are false

3) A & R are true R does not explain A                       4)A is true but R is false

29.    29       The rate of the heart beat is not increased by

1)ANS                                                                         2)Thyroxine

3)Catecholamines                                                        4)Parasympathetic nerves

30.   30.        Warning signal for the deprivation of blood supply to the heart muscles is

1)CAD 2)Angina pectoris        3)Heart attack  4)Heart failure

31.   Veins at the  junction of left internal jugular vein and leff subclavian veins receive the lymph collected from

1) All parts of body                                            2) Left and right sides of body

3) Left and lower parts of the body through chyliferous duct

4) Right side of body through right lymphatic duct

32.   Match

         A. Ductus arteriosus                       I. Ligamentum arteriosum

         B. Foramen ovale                          II. AV node

         C. Eustachian valve                      III. Rudimentary and non functional in adult heart

         D. Relay point                               IV.  Fenestra ovalis

                                                                                                    V. Fossa ovalis

                                                        A   B    C    D                                                         A   B    C   D

         1) I    IV   III   II                                                    2)  I   III   V   II

         3) I     V   III    II                                                    4)  I   III   IV   II

33.   Which of the following events occur during ventricular systole

         A. AV valves are open     B. SL valves are open

         C. AV valves are closed   D. LUB sound

         E. DUP sound                                                       F. Blood flow  from ventricles to aortic arches

         G. Blood flow from atria into ventricles

       1) A, E, G                    2) B, C, D, G                     3) A, B, E, F                      4) B, C, D, F

34.   Identify the sequence of blood flow in a pulmonary circulation

         A. Left atrium                                                       B. Right ventricule

         C. Right atrium                                                    D. Pulmonary vein

         E. Pulmonary artery                                            F. lungs

            1) C B E F D A            2) C B D F E A            3) A D F E B C            4) C B A D F E

35.     Backward pushing of the tricuspid and bicuspid valves in to the atria during ventricular systole is prevented by 

            1) Chordae tendinae    2) Columnae corneae   3) Papillary muscles     4) Bundle of His

36.     The direction of the wave of contraction in the heart of human beings is

          1) SA node  AV node  Atria  Purkinje fibres  Bundle of His  Ventricles          

          2) SA node  Atria  AV node  Bundle of His  Purkinje fibres  Ventricles          

          3) SA node  Atria  Purkinje fibres  Ventricles  AV node  Bundle of His  

          4) AV node  Bundle of His  Purkinje fibres  Ventricles  SA node  Atria