Anoxia means
absence of oxygen
diminished amount of oxygen delivered to the tissues
both (a) and (b)
none of these
Correct Answer :
C. both (a) and (b)
Related Questions
The substances undergoing slow oxidation in the body during respiration are known as
Oxidases
Metabolites
ATP
ADP
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
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
All are lung diseases except
asthma
pericarditis
bronchitis
pneumonia
The process of breathing-in of oxygen rich air from outside is called
expiration
inspiration
respiration
oxidation
The iron containing haemoglobin pigment is a
protein
polysaccharide
enzyme
none of these
The greatest volume of air that can be expired after a maximum inspiratory affect, is its
residual volume
tidal volume
vital capacity
lung volume
Which of the following can respire in total absence of air (anoxyliosis)?
Amoeba
Bed bug
Hydra
Tapeworm
The rate of respiration is lowest at
sleeping
running
eating food
playing
The vibrations of which of these membranes produces vocal sounds?
Glottis
Vocal cords
Vocal sacs
Epiglottis
Ciliated epithelium in the trachea of mammals helps in
sucking-in air
pushing expired air out
pushing mucus out
keeping the alveolar air in circulation
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
During inspiration in mammals, the diaphragm shall
Contract
relax
expand
shows no change
Oxygen will diffuse through a membrane only if it is
moist
immersed in water
very thin
vascular
The respiratory tubes devoid of car-tilagenous rings are
trachea
bronchi
bronchioles
none of these
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 impulses reaching voluntary muscles for forced breathing originate from
medulla oblongata
spinal cord
vagus nerve
cerebrum
Colour of oxyhaemoglobin is
dull red
bluish red
bright red
dull brown
The maximum volume of inspirable air is called
vital capacity
residual volume
inspiratory capacity
any of these
The capacity of lungs for air in a healthy man is about
500 ml
1000 ml
2000 ml
3000 ml
In all vertebrates, the oxygen transport is through
haemocyanin
haemoglobin
myoglobin
haemoerythrin
Internal respiration refers to
exchange of gases between lungs and blood
cellular respiration
exchange of gases between lungs and atmosphere
respiration in open air
Oxygen is transported to every cell of the body through
RBC
WBC
Both (a) and (b)
RBC and hormones
The opening into the wind pipe or trachea is called
larynx
epiglottis
glottis
bronchi
A normal man respires in a minute
25-30 times
10-15 times
14-18 times
20-25 times
The condition in which the body suffers from acute oxygen shortage is called
anaemia
deoxygenation
detoxification
hypoxia
In rabbits, respiration takes place in
Cells lining the lung cavities
Cells found in blood
All living cells of the body
RBC only
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
Air directly enters the tracheae via the
external nares
pharynx
larynx
bronchi
The regulatory centre for respiration is situated in the
cerebral cortex
hypothalamus
medulla oblongata
procencephalon