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NEET Biology Solved Question Paper 2006

Multiple Choice Questions

31.

Which of the following layer of heart wall consists of cardiac muscles ?

Endocardium
Myocardium
Epicardium
All of these

32.

If heart beats 75 beats/min. then what is time for cardiac cycle ?

0.5 sec
0.8 sec
1 sec
1.5 sec

33.

Blood pressure increases and heart rate decreases in response to :

exercise
haemorrhage
exposure to high altitude
increased intracranial pressure

34.

'P' wave of ECG occurs before the:

onset of ventricular ejection
end of atrial contraction
begining of atrial contraction
none of the above

35.

Liver in our body stores:

Vitamin- A
Vitamin- D
Vitamin- B₁₂
All of these

36.

Secretin hormone is secreted by :

liver
pancreas
intestine
Brunner's glands

37.

The contraction of gall bladder is due to :

gastrin
secretin
enterogasterone
cholecystokinin

38.

Which of the following is the character of the bile juice?

It has trypsin
It has no enzyme
It has enterogasterone
It has tripophnomide

39.
Average pH of human urine is :

6.0

9.0

3.0

7.0

6.0

Average pH of human urine is 6.0. Normal urine is slightly acidic. The variations in urine pH are closely related to the diet. A high protein diet increases acidity, while a diet composed largely of vegetables increases aikalinity. The colour of the urine is due to pigment urochrome.