Which one of the following statements is correct regarding blood pressure?

1. 100/55 mmHg is considered an ideal blood pressure

2. 105/50 mmHg makes one very active

3. 190/110 mmHg may harm vital organs like brain and kidney

4. 130/90 mmHg is considered high and requires treatment

A person with unknown blood group under ABO system, has suffered much blood loss in an accident and needs immediate blood transfusion. His one friend who has a valid cetificate of his own blood type, offers for blood donation without delay. What would have been the type of blood group of the donor friend?

(1) Type AB

(2) Type O

(3) Type A

(4) Type B

'Bundle of His' is a part of which one of the following organs in humans?

1. Heart

2. Kidney

3. Pancreas

4. Brain

Examination of blood of a person suspected of having anaemia, shows large, immature,

nucleated erythrocytes without haemoglobin. Supplementing his diet with which of the

following, is likely to alleviate his symptoms?

1. Thiamine

2. Folic acid and cobalamine

3. Riboflavin

4. Iron compounds

Which one of the following has an open circulatory system?

1. Pheretima

2. Periplaneta

3. Hirudinaria

4. Octopus

In the foetus, the ductus arteriosus connects the

1. pulmonary vein with pulmonary artery

2. pulmonary artery with aorta

3. pulmonary vein with aorta

4. pulmonary artery with vena cava

Which of the following is known as Christmas factor?

1. factor VIII               

2. factor XII

3. factor IV                 

4. factor IX

Erythrocyte maturing factor is

1. folic acid                     

2. cyanocobalamin

3. vitamin B₂                   

4. vitamin C

A human RBC is placed in 1.5% salt solution. It will

1. swell up               

2. shrink

3. remain unaffected 

4. burst

All veins carry deoxygenated blood except

1. pulmonary vein             

2. hepatic vein

3. hepatic portal vein         

4. renal vein