The greatest volume of air that can be expired after a maximum inspiratory affect, is its
residual volume
tidal volume
vital capacity
lung volume
Correct Answer :
C. vital capacity
Related Questions
In all vertebrates, the oxygen transport is through
haemocyanin
haemoglobin
myoglobin
haemoerythrin
The term used to denote the difference in volume between the total lung capacity and the vital capacity is
tidal volume
ventilation rate
residual volume
all of these
The capacity of lungs for air in a healthy man is about
500 ml
1000 ml
2000 ml
3000 ml
The substances undergoing slow oxidation in the body during respiration are known as
Oxidases
Metabolites
ATP
ADP
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 impulses reaching voluntary muscles for forced breathing originate from
medulla oblongata
spinal cord
vagus nerve
cerebrum
The medullary inspiratory centre is always under direct control of
chemicals
physical conditions
nerves
all of these
The maximum volume of inspirable air is called
vital capacity
residual volume
inspiratory capacity
any of these
The rate of respiration is lowest at
sleeping
running
eating food
playing
The respiratory portion of the respiratory tract consists of
Pharynx, larynx, trachea, bronchi and bronchioles
Trachea, bronchi, bronchioles, alveolar ducts and alveoli
Respiratory bronchioles, alveola ducts, alveolar sacs and alveoli
Bronchi, bronchioles, alveolar ducts, alveolar sacs and alveoli
The process of breathing-in of oxygen rich air from outside is called
expiration
inspiration
respiration
oxidation
The opening into the wind pipe or trachea is called
larynx
epiglottis
glottis
bronchi
The metal associated with haemoglobin is
Copper
Magnesium
Iron
Manganese
The greatest volume of air that can be expired after a maximum inspiratory affect, is its
residual volume
tidal volume
vital capacity
lung volume
Diaphragm is characteristic of
egg-laying mammals only
marsupial mammals only
eutherian mammals only
all the mammals
The oxygen content of expired air in man is
3 per cent
25 per cent
16 per cent
20 per cent
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
The condition in which the body suffers from acute oxygen shortage is called
anaemia
deoxygenation
detoxification
hypoxia
Tissue respiration is a process by which
carbohydrates are synthesised
proteins are broken down
fat molecules are metabolised
energy is liberated
In rabbits, respiration takes place in
Cells lining the lung cavities
Cells found in blood
All living cells of the body
RBC only
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
The functional unit of the lung is
neuron
alveolus
bronchus
none of these
The iron containing haemoglobin pigment is a
protein
polysaccharide
enzyme
none of these
Oxygen will diffuse through a membrane only if it is
moist
immersed in water
very thin
vascular
All are lung diseases except
asthma
pericarditis
bronchitis
pneumonia
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
The membrane covering the lungs is
conjunctiva
pleura
meninges
peritoneum
Internal respiration refers to
exchange of gases between lungs and blood
cellular respiration
exchange of gases between lungs and atmosphere
respiration in open air
The respiratory tubes devoid of car-tilagenous rings are
trachea
bronchi
bronchioles
none of these