cerebral cortex
hypothalamus
medulla oblongata
procencephalon
C. medulla oblongata
neuron
alveolus
bronchus
none of these
residual volume
tidal volume
vital capacity
lung volume
medulla oblongata
spinal cord
vagus nerve
cerebrum
the oxygen content of the blood
the nitrogen content of the blood
receptors in the larynx
the carbon dioxide content of the bkxxl
less than that is lung capillaries
equal to that in lung capillaries
double of that in lung capillaries
half of that in lung capillaries
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
protein
polysaccharide
enzyme
none of these
larynx
epiglottis
glottis
bronchi
expiration
inspiration
respiration
oxidation
dull red
bluish red
bright red
dull brown
hypercapnia
pulmonary edema
hypoxia
emphysema
Contract
relax
expand
shows no change
asthma
pericarditis
bronchitis
pneumonia
absence of oxygen
diminished amount of oxygen delivered to the tissues
both (a) and (b)
none of these
cerebral cortex
hypothalamus
medulla oblongata
procencephalon
external nares
pharynx
larynx
bronchi
sucking-in air
pushing expired air out
pushing mucus out
keeping the alveolar air in circulation
5000 ml of oxygen per day
5000 ml of oxygen per hour
500 ml of oxygen per hour
200 ml of oxygen per minute
carbohydrates are synthesised
proteins are broken down
fat molecules are metabolised
energy is liberated
Cells lining the lung cavities
Cells found in blood
All living cells of the body
RBC only
lack of sufficient amount of haemoglobin
lack of sufficient amount of erythrocytes
arterial hypoxia
anaemic hypoxia
haemocyanin
haemoglobin
myoglobin
haemoerythrin
25-30 times
10-15 times
14-18 times
20-25 times
500 ml
1000 ml
2000 ml
3000 ml
trachea
bronchi
bronchioles
none of these
RBC
WBC
Both (a) and (b)
RBC and hormones
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
Amoeba
Bed bug
Hydra
Tapeworm
conjunctiva
pleura
meninges
peritoneum
vital capacity
residual volume
inspiratory capacity
any of these