Body Fluids and Circulation PYQ

Following are the stages of pathway for conduction of an action potential through the heart A. AV bundle B. Purkinje fibres C. AV node D. Bundle branches E. SA node Choose the correct sequence of pathway from the options given below

The mother has $\mathrm{A}+$ blood group the father has $\mathrm{B}+$ and the child is $\mathrm{A}+$. What can be the possibility of genotypes of all three, respectively? A. $\quad I^A I^A\left|I^B i\right| I^B i$ B. $\quad I^A I^A\left|I^B i\right| I^A i$ C. $\quad I^B i\left|I^A I^A\right| I^A I^B$ D. $\quad I^A I^A\left|I^B I^B\right| I^A i$ E. $\quad I^A i\left|I^B i\right| I^{A_i}$ Choose the correct answer from the option given below:

A person with blood group $\mathrm{ARh}^{-}$can receive the blood transfusion from which of the following types? A. $\mathrm{BRh}^{-}$ B. $\mathrm{ABRh}^{-}$ C. $\mathrm{ORh}^{-}$ D. $\mathrm{ARh}^{-}$ E. $\mathrm{ARh}^{*}$ Choose the correct answer from the options given below :

'Lub' sound of Heart is caused by the ______

Given below are two statements : Statement I : Bone marrow is the main lymphoid organ where all blood cells including lymphocytes are produced. Statement II : Both bone marrow and thymus provide micro environments for the development and maturation of T-lymphocytes. In the light of above statements, choose the most appropriate answer from the options given below :

Match List I with List II : \begin{array}{|l|l|l|l|}\hline & List I & & List II \\\hline A. & P wave & I. & Heart muscles are electrically silent. \\\hline B. & QRS complex & II. & Depolarisation of ventricles. \\\hline C. & T wave & III. & Depolarisation of atria. \\\hline D. & T-P gap & IV. & Repolarisation of ventricles. \\\hline\end{array} Choose the correct answer from the options given below :

Match List I with List II. <table class="pyq-table"><tbody><tr><td>List I</td><td>List II</td></tr><tr><td>A. P-wave</td><td>I. Beginning of systole</td></tr><tr><td>B. Q-wave</td><td>II. Repolarisation of ventricles</td></tr><tr><td>C. QRS complex</td><td>III. Depolarisation of atria</td></tr><tr><td>D. T-wave</td><td>IV. Depolarisation of ventricles</td></tr></tbody></table>Choose the correct answer from the options given below:

Which of the following statements are correct? A. Basophils are most abundant cells of the WBCs B. Basophils secrete histamine, serotonin and heparin C. Basophils are involved in inflammatory response D. Basophils have kidney shaped nucleus E. Basophils are agranulocytes. Choose the correct answer from the options below:

Match List-I with List-II  Choose the correct answer from the options given below :

Match List - I with List - II  Choose the correct answer from the options given below :

Given below are two statements: Statement I: The coagulum is formed of network of threads called thrombins. Statement II: Spleen is the graveyard of erythrocytes. In the light of the above statements, choose the most appropriate answer from the options given below:

Which of the following animals has three chambered heart?

Which one of the following statements is correct?

Arrange the following formed elements in the decreasing order of their abundance in blood in humans : (a) Platelets (b) Neutrophils (c) Erythrocytes (d) Eosinophils (e) Monocytes Choose the most appropriate answer from the options given below :

Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins?

Persons with 'AB' blood group are called as "Universal recipients". This is due to:

The QRS complex in a standard ECG represents:

Which of the following is associated with decrease in cardiac output?

Match the following columns and select the correct option. <table class="pyq-table"><tbody><tr><td></td><td>Column-I</td><td></td><td>Column-II</td></tr><tr><td>(a)</td><td>Eosinophils</td><td>(i)</td><td>Immune response</td></tr><tr><td>(b)</td><td>Basophils</td><td>(ii)</td><td>Phagocytosis</td></tr><tr><td>(c)</td><td>Neutrophils</td><td>(iii)</td><td>Release histaminase, destructive enzymes</td></tr><tr><td>(d)</td><td>Lymphocytes</td><td>(iv)</td><td>Release granules containing histamine</td></tr></tbody></table>

Which of the following conditions cause erythroblastosis foetalis?

Match the Column - I with Column - II: <table class="pyq-table"><tbody><tr><th></th><th>Column - I</th><th></th><th>Column II</th></tr><tr><td>$(a)$</td><td>P - wave</td><td>$(i)$</td><td>Depolarisation of ventricles</td></tr><tr><td>$(b)$</td><td>QRS complex</td><td>$(ii)$</td><td>Repolarisation of ventricles</td></tr><tr><td>$(c)$</td><td>T - wave</td><td>$(iii)$</td><td>Coronary ischemia</td></tr><tr><td>$(d)$</td><td>Reduction in the size of T - wave</td><td>$(iv)$</td><td>Depolarisation of atria</td></tr><tr><td></td><td></td><td>$(v)$</td><td>Repolarisation of atria</td></tr></tbody></table> Select the correct option

All the components of the nodal tissue are autoexcitable. Why does the SA node act as the normal pacemaker?