Question 1

Asthma is a respiration disease caused due to

Accepted Answer

A)  infection of trachea
B)  infection of lungs
C)  bleeding into pleura cavity
D)  spasm in bronchial muscles D

Question 2

The process of the escape of liquid from the tip of uninjured leaf or through hydathodes is called

Accepted Answer

A)  transpiration
B)  guttation
C)  evapo-transpiration
D)  evaporation B

Question 3

An erythrocyte lives for approximately

Accepted Answer

A)  one week
B)  one month
C)  four months
D)  one year C

Question 4

The maximum possible volume of air, which can be inspiration, is called as

Accepted Answer

A)  tidal air volume
B)  vital lung capacity
C)  complemental air volume
D)  total lung capacity

Question 5

The exchange of gases in a mammal takes place is

Accepted Answer

A)  trachea
B)  bronchioles
C)  bronchi
D)  alveoli

Question 6

Oxygen is transported in blood mainly by

Accepted Answer

A)  leucocytes
B)  erythrocytes
C)  thromobocytes
D)  blood plasma

Question 7

In a closed circulatory system, blood is completely enclosed within

Accepted Answer

A)  the skeleton
B)  sinuses
C)  vessels
D)  hearts

Question 8

The function of vitamin K is in

Accepted Answer

A)  regulation of calcium and phosphorus metabolism
B)  blood clotting
C)  respiration
D)  carbohydrate metabolism

Question 9

The covering of lungs is called

Accepted Answer

A)  pericardium
B)  pleural membrane
C)  perichondrium
D)  peritoneum

Question 10

Percentage of O2 present in inhaled air in man is about

Accepted Answer

A)  21%
B)  78%
C)  1%
D)  43%

Question 11

The narrowest and most numerous tubes of lungs are termed as

Accepted Answer

A)  bronchus
B)  alveoli
C)  bronchioles
D)  hilum

Question 12

The smallest blood vessel in the body is a

Accepted Answer

A)  capillary
B)  artery
C)  vena cava
D)  vein

Question 13

The life span of human WBC is normally

Accepted Answer

A)  12-13 days
B)  80-90 days
C)  100-120 days
D)  20-30 days

Question 14

Oxygenated blood is carried by

Accepted Answer

A)  pulmonary vein
B)  pulmonary artery
C)  hepatic portal vein
D)  renal vein

Question 15

Which one of the following is the most common type of transpiration?

Accepted Answer

A)  stomatal
B)  lenticular
C)  foliar
D)  cuticular

Question 16

Both erythrocytes and leucocytes are formed in the

Accepted Answer

A)  bone marrow
B)  thymus
C)  arterial walls
D)  lymph nodes

Question 17

Mountain sickness results due to

Accepted Answer

A)  anaemic hypoxia
B)  arterial hypoxia
C)  lack of sufficient RBCs
D)  lack of sufficient WBCs

Question 18

When the right ventricle of heart contracts, the blood goes to

Accepted Answer

A)  all parts of the body
B)  Pulmonary arteries
C)  aorta
D)  lungs

Question 19

Tidal volume of air in a normal healthy man during inspiration is about

Accepted Answer

A)  300 - 400 ml
B)  500 - 700 ml
C)  900 - 1000 ml
D)  100 - 250 ml

Question 20

Typical 'lub-dub' sound heard in heartbeat are due to

Accepted Answer

A)  closing of bicuspid and tricuspid valves
B)  closing of semilunar valves
C)  closure of bicuspid-tricuspid valves followed by semilunar valves
D)  blood under pressure through aorta

Exam 2: Respiratory and Circulatory System: Understanding the Basics