There are two lungs, the right and left, each divided into - - - - - - - 🐻

The lungs consist mainly of tiny air-containing sacs called - - - - - 🐻

تكملة which number approximately - - - - - in an adult

The alveoli are the sites - - - - - - - - 🐻

Inspiration (inhalation) is the movement of air from the external environment through the airways into during breathing T/F??

In a healthy adult at rest, approximately - - - - - - 🐻

The air passages behind the larynx can be divided into two regions؟؟؟؟ اذكرهم

The conducting zone extends from the top of the trachea to the beginning of the respiratory bronchioles. contains T/f 🐻

The conducting zone contains no alveoli and does not exchange gases with the blood. T/F

-------site of gas exchange. a) Bronchioles b) Alveoli c) Lung

Which of the following is not true about inspiration? a) Intake of air into lungs. b) Contraction of internal intercostal muscles. c) Increase in volume of thoracic cavity.

6) The surface of the alveolar cells is dry T/F

Explratio is intake of air into lungs T/F

Inspiration Is decrease in volume of thoracic cavity T/F

In Inspiration Relaxation of external intercostal muscles ( muscles present between ribs ) and contraction of internal intercostal muscles occur . T/F

The typical value of residual volume is a ) 500ml b ) 3000 ml c ) 1200 ml

The Po2 in alveoli equals to ---- a ) 160 mmhg b ) 100 mmhg c ) 105 mmhg

The Po2 of blood in the pulmonary veins and systemic arteries is about 5 mmHg more than that in average alveolar T/F

Decrease in ventilation lead to a ) Increase in alveolar Po2 b ) Decrease in alveolar Po2 c ) Decrease in alveolar Pco2