Hemolytic disease of the newborn (HDN) may occur in the feotus of a second pregnancy if:

1. The mother is ${\mathrm{Rh}}^{+}$ and the baby is ${\mathrm{Rh}}^{-}$

2. The mother is ${\mathrm{Rh}}^{+}$ and the baby is ${\mathrm{Rh}}^{+}$

3. The mother is ${\mathrm{Rh}}^{-}$ and the baby is ${\mathrm{Rh}}^{-}$

4. The mother is ${\mathrm{Rh}}^{-}$ and the baby is ${\mathrm{Rh}}^{+}$

Which of the following sequences best represents the pathway of an action potential through the Heart's conduction system?

(i) Sino-atrial (SA) node

(ii) Purkinje fibres

(iii) Bundle of His

(iv) Atrio-ventricular (AV) node

(v) Right and left bundle branches

1. (i),(iv),(iii),(ii),(v)

2. (iv), (i),(iii),(v),(ii)

3. (iii),(iv),(i),(ii),(v)

4. (i),(iv),(iii),(v),(ii)

Select the option having all the correct characteristics :

	Structure	Percentage	Function
1.		0.3-0.5	Phagocytic
2.		0.5-1.0	Secrete histamine
3.		30-40	Defense against parasites
4.		30-40	Allergic reactions

Match the vessels in Column-I with appropriate organs in Column-II:

1. (A)$\to$(r), (B)$\to$(s),(C)$\to$(p),(D)$\to$(q)

2. (A)$\to$(r),(B)$\to$(q),(C)$\to$(s),(D)$\to$(p)

3. (A)$\to$(s),(B)$\to$(p),(C)$\to$(r),(D)$\to$(q)

4. (A)$\to$(s),(B)$\to$(q),(C)$\to$(p),(D)$\to$(r)

Thrombokinase performs a specific function in human body

Choose the correct option

1. Thrombin        $\stackrel{}{\to }$      Prothrombin    

2. Fibrinogen       $\stackrel{}{\to }$      Fibrin

3. Fibrin              $\stackrel{}{\to }$      Fibrinogen

4. Prothrombin    $\stackrel{}{\to }$       Thrombin

T-wave in electrocardiogram represents

1. The return of ventricles from excited to normal state.

2. Depolarisation of ventricles from normal to excited state.

3. Onset of atrial systole.

4. Onset of atrial diastole.

Heart disorder in which cardiac muscles are suddenly damaged by inadequate supply of blood is 

1. Heart failure

2. Cardiac arrest

3. Heart attack

4. Atherosclerosis

Different blood groups are due to:

1. Specific antigens on the surface of WBCs
2. Specific antibodies on the surface of RBCs
3. Specific antigens on the surface of RBCs
4. Specific type of haemoglobin in RBCs

Lymph differs from blood in possessing

1. More proteins and less waste products

2. Less proteins and more waste products

3. More proteins and more waste products

4. Less proteins and less waste products

A patch of nodal tissue responsible for initiating the rhythmic contractile activity of the heart is present in:

1. Lower left corner of the left ventricle

2. Upper right corner of the right atrium

3. Lower left corner of the right ventricle

4. Upper left corner of the left atrium