breathing and exchange of gases

it is the volume of air inspired or expired during normal breathing without any effort. 500ml

what is tidal volume?

what is inspiratory reserve volume?

it is an extra amount of air that can be inspired forcibly after normal inspiration. 2500-3000ml

expiratory reserve volume. explain.

1000ml-1100ml. it is extra amount of air that can be expelled after forcible expiration

residual volume. explain

it is the volume of air that remains in lungs even after forcible expiration. it is the reason why our lungs doesn’t collapse

what is inspiratory capacity?

total volume of air a person can inspire after normal expiration. TV+IRV

TLC-FRC

what is expiratory capacity?

total volume of a person ca expire after normal inspiration. TV+ERV

VC-IRC

functional residual capacity

volume of air that remains in lungs after normal expiration. ERV+RV

TLC-IC

VITAL CAPACITY. EXPLAIN

max volume of air a person can breathe in after forced expiration. ERV+TV+IRV

OR maximum volume of air a person can breathe out after a forced inspiration

what is total lung capacity?

total volume of air accommodated in lungs at end of a forced inspiration.

RV+ERV+TV+IRV OR

VC+RV

name the disease according to the symptoms:

1. inflammation of mucous membrane of nasal passage

2. watery secretion by mucous gland

3. continuous sneezing and watery eyes

4. fever

rhinitis

carbon monoxide can kill a person because of its high affinity for

haemoglobin

after a long deep breath we do not respire for some seconds due to?

less co2 in blood

the change from 2 to 3 indicates

change indicates decrease in volume of lung thus increase in pressure of lungs which leads to expulsion of air

label each part

a- systematic vein , b- pulmonary artery

c- pulmonary vein d- systematic artery

how much amount of oxygen and co2 is present in atmospheric air

o2-159mm hg' co2- 0.3 mm hg

amount of o2 and co2 in alveloli--

o2-- 104

co2- 40 which is same as oxygen level of deoxygenated blood and tissue

where co2 level is also 40 for oxygenated blood

amount of deoxygenated blood of co2?

45

amount of o2 in oxygenated blood and

amount of co2 in tissue

95

45

during expiration and inspiration what is shape of diaphragm

expiration-- dome shaped/convex

inspiration-- flatten