Deck 2: Respiratory and Circulatory System: Understanding the Basics

Question 1

The covering of lungs is called

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

Answer 1

pleural membrane

Question 2

The narrowest and most numerous tubes of lungs are termed as

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

Answer 2

bronchioles

Question 3

The exchange of gases in a mammal takes place is

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

Answer 3

alveoli

Question 4

Volume of air inspired and expired with each normal breath is called

A)tidal volume
B)inspiratory capacity
C)total lung capacity
D)residual volume

Question 5

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

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

Question 6

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

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

Question 7

Percentage of O₂ present in inhaled air in man is about

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

Question 8

Oxygen is transported in blood mainly by

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

Question 9

Asthma is a respiration disease caused due to

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

Question 10

Mountain sickness results due to

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

Question 11

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

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

Question 12

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

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

Question 13

In a closed circulatory system, blood is completely enclosed within

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

Question 14

The smallest blood vessel in the body is a

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

Question 15

Both erythrocytes and leucocytes are formed in the

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

Question 16

An erythrocyte lives for approximately

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

Question 17

The abnormal increase in the total RBC count is referred to as

A)pneumonia
B)polycythemia
C)leucopenia
D)anaemia

Question 18

The life span of human WBC is normally

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

Question 19

The function of vitamin K is in

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

Question 20

Oxygenated blood is carried by

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

Question 21

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

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

Question 22

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

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