In a man at rest the body's cells consume approximately
5000 ml of oxygen per day
5000 ml of oxygen per hour
500 ml of oxygen per hour
200 ml of oxygen per minute
Correct Answer :
D. 200 ml of oxygen per minute
Related Questions
The iron containing haemoglobin pigment is a
protein
polysaccharide
enzyme
none of these
The respiratory disease immediately related to cigarette smoking is
hypercapnia
pulmonary edema
hypoxia
emphysema
The vibrations of which of these membranes produces vocal sounds?
Glottis
Vocal cords
Vocal sacs
Epiglottis
Oxygen is transported to every cell of the body through
RBC
WBC
Both (a) and (b)
RBC and hormones
Tissue respiration is a process by which
carbohydrates are synthesised
proteins are broken down
fat molecules are metabolised
energy is liberated
Air directly enters the tracheae via the
external nares
pharynx
larynx
bronchi
Emphysema is a respiratory disease in which
the larynx is closed
the trachea gets narrowed
the gas exchange area of lungs is increased
the gas exchange area of lungs is decreased
Colour of oxyhaemoglobin is
dull red
bluish red
bright red
dull brown
Pulmonary artery
returns highly oxygenated blood to the left heart for distribution throughout the body
returns highly oxygenated blood to right heart for distribution throughout the body.
delivers blood to lungs low in oxygen
delivers highly oxygenated blood in lungs
Diaphragm is characteristic of
egg-laying mammals only
marsupial mammals only
eutherian mammals only
all the mammals
The maximum volume of inspirable air is called
vital capacity
residual volume
inspiratory capacity
any of these
Anoxia means
absence of oxygen
diminished amount of oxygen delivered to the tissues
both (a) and (b)
none of these
The opening into the wind pipe or trachea is called
larynx
epiglottis
glottis
bronchi
The substances undergoing slow oxidation in the body during respiration are known as
Oxidases
Metabolites
ATP
ADP
During inspiration in mammals, the diaphragm shall
Contract
relax
expand
shows no change
The "mountain sickness" in persons climbing to high attitudes without the aid of oxygen cylinders is due to
lack of sufficient amount of haemoglobin
lack of sufficient amount of erythrocytes
arterial hypoxia
anaemic hypoxia
The condition in which the body suffers from acute oxygen shortage is called
anaemia
deoxygenation
detoxification
hypoxia
Which of the following can respire in total absence of air (anoxyliosis)?
Amoeba
Bed bug
Hydra
Tapeworm
The carbon dioxide pressure in the lung capillaries is
less than that in alveolar air
more than that in alveolar air
equal to that in alveolar air
similar to oxygen pressure in the capillaries
In response to high altitude hypoxia supply of oxygen to the tissue is maintained by
increased alveolar ventilation and increased cardiac output
shift in the haemoglobin dissociation curve to the right
increased erythrocytes and haemoglobin content of blood
all of these
To take air into the lungs, the diaphragmmust be
dome shaped
oblique
flattened
normal
The oxygen pressure in the alveolar air is
less than that is lung capillaries
equal to that in lung capillaries
double of that in lung capillaries
half of that in lung capillaries
The regulatory centre for respiration is situated in the
cerebral cortex
hypothalamus
medulla oblongata
procencephalon
In frog, the alveoli are surrounded by
flattened and ciliated cells to increase the surface area of lungs
columnar and ciliated cells to increase the surface area of lungs
only ciliated cells to increase the surface area of lungs
only squamous cells to decrease the surface area of lungs
The respiratory tubes devoid of car-tilagenous rings are
trachea
bronchi
bronchioles
none of these
The oxygen content of expired air in man is
3 per cent
25 per cent
16 per cent
20 per cent
The capacity of lungs for air in a healthy man is about
500 ml
1000 ml
2000 ml
3000 ml
Among the following, the maximum amount of usable energy is released per-molecule of glucose by
yeast cell in fermentation
a liver cell in glycolysis
an Amoeba in aerobic respiration
a muscle cell in lactic acid formation
The rate of respiration is lowest at
sleeping
running
eating food
playing
All are lung diseases except
asthma
pericarditis
bronchitis
pneumonia