Colour of oxyhaemoglobin is
dull red
bluish red
bright red
dull brown
Correct Answer :
C. bright red
Related Questions
The metal associated with haemoglobin is
Copper
Magnesium
Iron
Manganese
A normal man respires in a minute
25-30 times
10-15 times
14-18 times
20-25 times
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
The impulses reaching voluntary muscles for forced breathing originate from
medulla oblongata
spinal cord
vagus nerve
cerebrum
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
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 vibrations of which of these membranes produces vocal sounds?
Glottis
Vocal cords
Vocal sacs
Epiglottis
In all vertebrates, the oxygen transport is through
haemocyanin
haemoglobin
myoglobin
haemoerythrin
The regulatory centre for respiration is situated in the
cerebral cortex
hypothalamus
medulla oblongata
procencephalon
The greatest volume of air that can be expired after a maximum inspiratory affect, is its
residual volume
tidal volume
vital capacity
lung volume
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
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
Oxygen will diffuse through a membrane only if it is
moist
immersed in water
very thin
vascular
Air directly enters the tracheae via the
external nares
pharynx
larynx
bronchi
The iron containing haemoglobin pigment is a
protein
polysaccharide
enzyme
none of these
Colour of oxyhaemoglobin is
dull red
bluish red
bright red
dull brown
To take air into the lungs, the diaphragmmust be
dome shaped
oblique
flattened
normal
Oxygen is transported to every cell of the body through
RBC
WBC
Both (a) and (b)
RBC and hormones
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
All are lung diseases except
asthma
pericarditis
bronchitis
pneumonia
Anoxia means
absence of oxygen
diminished amount of oxygen delivered to the tissues
both (a) and (b)
none of these
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
In rabbits, respiration takes place in
Cells lining the lung cavities
Cells found in blood
All living cells of the body
RBC only
The respiratory tubes devoid of car-tilagenous rings are
trachea
bronchi
bronchioles
none of these
The functional unit of the lung is
neuron
alveolus
bronchus
none of these
Tissue respiration is a process by which
carbohydrates are synthesised
proteins are broken down
fat molecules are metabolised
energy is liberated
The medullary inspiratory centre is always under direct control of
chemicals
physical conditions
nerves
all of these
During inspiration in mammals, the diaphragm shall
Contract
relax
expand
shows no change