11 - physiology new mcqs - part 5

41q. ventilation perfusion ratio is maximum at ?

 

1. apex of lung
2. base of lung
3. posterior lobe of lung
4. middle of the lung

 

answer: a . apex of lung .

 

42q. apnoea is defined as ?

 

1. stoppage of heart beat
2. cessation of respiration
3. irregular respiration
4. RR

 

Answer: b . cessation of respiration .

 

43q. the neurons may get irreversibly damaged if exposed to significantly hypoxia for ?

 

1. 8 minutes
2. 2 minutes
3. 30 seconds
4. 15 seconds

 

Answer: a . 8  minutes .

 

44q. which of the following is not a vitamin K dependent factor ?

 

1. factor 2
2. factor 7
3. factor 8
4. factor 10

 

answer: c . factor 8 . vitamin K dependent factors are 2,7,9,10 , protein C and protein S .

 

45q. life span of neutrophils is ?

 

1. 6 hours
2. 6 days
3. 10 days
4. 15 days

 

Answer: a . 6 hours .

 

46q. life span of neonatal RBC is ?

 

1. 100 days
2. 120 days
3. 6 months
4. 1 year

 

Answer: a . 100 days .

 

47q. plasma sodium concentration is ?

 

1. 120 meq/l
2. 3.5 meq/l
3. 140 meq/l
4. 110 meq/l

 

Answer: c . 140 meq/l .

 

48q. cardiac index in a normal person is ?

 

1. 2.1
2. 3.2
3. 4.6
4. 5.9

 

Answer: b . 3.2 . cardiac output divided by total surface area of the body .

 

49q. alkali resistant hemoglobin is ?

 

1. Hb A
2. Hb A , C
3. Hb S
4. Hb F

 

Answer: d . Hb F .

 

50q. blood brain barrier is deficient at ?

 

1. area postrema
2. thalamus
3. meta thalamus
4. cerebellum

 

answer: a . area postrema