Body Fluids and Circulation PYQ

Cardiac activities of the heart are regulated by: A. Nodal tissue B. A special neural centre in the medulla oblongata C. Adrenal medullary hormones D. Adrenal cortical hormones Choose the correct answer from the options 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 ______

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:

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 :

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

As per ABO blood grouping system, the blood group of father is $\mathrm{B}^{+}$, mother is $\mathrm{A}^{+}$and child is $\mathrm{O}^{+}$. Their respective genotype can be A. $\quad{ }^{\mathrm{B}} / / \|^{A^A} / / i \mathrm{i}$ B. $\left.\quad I^{\mathrm{B}}\right|^{\mathrm{B}} /\left.\left.\right|^{\mathrm{A}}\right|^{\mathrm{A}} / \mathrm{ii}$ C. $|\mathrm{A}| \mathrm{B} /\left.i\right|^{\mathrm{A}} /\left.\right|^{\mathrm{B}} \mathrm{j}$ D. $\quad \mathrm{A}_{\mathrm{A}} / I^{\mathrm{B}} / /^{\mathrm{A}} \mathrm{i}$ E. $\quad \mathrm{il}^{\mathrm{B}} /\left.\mathrm{i}\right|^{\mathrm{A}} /\left.\mathrm{I}^{\mathrm{A}}\right|^{\mathrm{B}}$ 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 :

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 :

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 animals has three chambered heart?

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 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 :

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

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

Which of the following conditions cause erythroblastosis foetalis?

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

The QRS complex in a standard ECG represents:

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>

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

What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?