Question

Gas exchange between the air in the lungs and the blood takes place in the Select one: a. alveoli. b. primary bronchi. c. terminal bronchioles. d. trachea. e. respiratory bronchi.

Answer 1

Gas exchange between the air in the lungs and the blood takes place in the alveoli.

ALVEOLI:

• Gaseous exchange is a phenomenon whereby gases (carbon dioxide and oxygen) are taken in and out of the body.

• Carbon dioxide is a product of respiration, hence, giving out. Oxygen is a reactant, hence, taken in. Carbon dioxide and oxygen are absorbed and removed from the blood in the general respiratory process.

• The alveoli are richly supplied with blood capillaries and are sites of gaseous exchange in some living organisms.

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