the oxygen content of the blood
the nitrogen content of the blood
receptors in the larynx
the carbon dioxide content of the bkxxl
D. the carbon dioxide content of the bkxxl
Contract
relax
expand
shows no change
Copper
Magnesium
Iron
Manganese
the larynx is closed
the trachea gets narrowed
the gas exchange area of lungs is increased
the gas exchange area of lungs is decreased
neuron
alveolus
bronchus
none of these
sucking-in air
pushing expired air out
pushing mucus out
keeping the alveolar air in circulation
exchange of gases between lungs and blood
cellular respiration
exchange of gases between lungs and atmosphere
respiration in open air
Amoeba
Bed bug
Hydra
Tapeworm
less than that is lung capillaries
equal to that in lung capillaries
double of that in lung capillaries
half of that in lung capillaries
expiration
inspiration
respiration
oxidation
asthma
pericarditis
bronchitis
pneumonia
protein
polysaccharide
enzyme
none of these
Glottis
Vocal cords
Vocal sacs
Epiglottis
the oxygen content of the blood
the nitrogen content of the blood
receptors in the larynx
the carbon dioxide content of the bkxxl
hypercapnia
pulmonary edema
hypoxia
emphysema
3 per cent
25 per cent
16 per cent
20 per cent
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
moist
immersed in water
very thin
vascular
egg-laying mammals only
marsupial mammals only
eutherian mammals only
all the mammals
haemocyanin
haemoglobin
myoglobin
haemoerythrin
25-30 times
10-15 times
14-18 times
20-25 times
vital capacity
residual volume
inspiratory capacity
any of these
yeast cell in fermentation
a liver cell in glycolysis
an Amoeba in aerobic respiration
a muscle cell in lactic acid formation
larynx
epiglottis
glottis
bronchi
residual volume
tidal volume
vital capacity
lung volume
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
chemicals
physical conditions
nerves
all of these
500 ml
1000 ml
2000 ml
3000 ml
dome shaped
oblique
flattened
normal
conjunctiva
pleura
meninges
peritoneum
cerebral cortex
hypothalamus
medulla oblongata
procencephalon