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

(1) Presence of antibodies, anti-A and anti-B, on RBCs

(2) Absence of antibodies, anti-A and anti-B, in plasma

(3) Absence of antigens A and B on the surface of RBCs

(4) Absence of antigens A and B in plasma

The QRS complex in a standard ECG represents:

1.  Depolarisation of auricles

2.  Depolarisation of ventricles

3.  Reploarisation of ventricles

4.  Repolarisation of auricles 

Match  the following columns and select the correct option . 

1. (iv)    (i)   (ii)     (iii) 

2. (i)     (ii)   (iv)    (iii)

3. (ii)    (i)    (iii)    (iv) 

4. (iii)   (iv)   (ii)    (i)  

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

1. Sympathetic nerves

2. Parasympathetic neural signals

3. Pneumotaxic center

4. Adrenal medullary hormones

Which of the following conditions causes erythroblastosis fetalis?

1. Mother ${\mathrm{Rh}}^{+\mathrm{ve}}$ and fetus ${\mathrm{Rh}}^{-\mathrm{ve}}$

2. Mother ${\mathrm{Rh}}^{-\mathrm{ve}}$ and fetus ${\mathrm{Rh}}^{+\mathrm{ve}}$

3. Both mother and fetus ${\mathrm{Rh}}^{-\mathrm{ve}}$

4. Both mother and fetus ${\mathrm{Rh}}^{+\mathrm{ve}}$

Match the Column I and Column II

Select the correct option 

      (a)    (b)   (c)  (d)

1.   (ii)    (iii)   (v)  (iv)

2.   (iv)   (i)     (ii)  (iii)

3.   (iv)   (i)     (ii)  (v)

4.   (ii)    (i)    (v)   (iii)    

Match the items given in Column I with those in Column II and select the correct option given below: 
Column I                        Column II 
a. Tricuspid valve             i. Between left atrium and left ventricle 
b. Bicuspid valve             ii. Between right ventricle and pulmonary artery 
c. Semilunar valve           iii. Between right atrium and right ventricle

1. a-iii b-i c-ii
2. a-i b-iii c-ii
3. a-i b-ii c-iii
4. a-ii b-i c-iii

Match the items given in Column I with those in column II and select the correct option given below:

Adult human RBCs are enucleated. Which of the following statement(s) is/ are the most appropriate explanation for this feature? 
(a) They do not need to reproduce 
(b) They are somatic cells 
(c) They do not metabolize 
(d) All their internal space is available for oxygen transport
1. Only (a)
2. (a),(c) and (d)
3. (b) and (c)
4. Only (d)

The hepatic portal vein drains blood to the liver from:
1. Stomach
2. Kidneys
3. Intestine
4. Heart