Respiratory System Quiz

During the process of inspiration, volume in the lungs __________ causing pressure in the lungs to __________.

• increases, increases

• decreases, increase

• decreases, decreases

• increases, decrease

What happens during external respiration?

• Oxygen diffuses from the lungs into the blood; carbon dioxide diffuses into the lungs from the blood.

• Oxygen diffuses into the lungs into the blood; carbon dioxide diffuses out of the lungs from the blood.

• Oxygen diffuses out from the tissues into the blood; Carbon dioxide diffuses into the tissues from the blood.

• Oxygen diffuses into the tissues into the blood; Carbon dioxide diffuses out of the tissues from the blood.

What happens during internal respiration?

• Oxygen diffuses from the lungs into the blood; carbon dioxide diffuses into the lungs from the blood.

• Oxygen diffuses into the lungs into the blood; carbon dioxide diffuses out of the lungs from the blood.

• Oxygen diffuses out from the tissues into the blood; Carbon dioxide diffuses into the tissues from the blood.

• Oxygen diffuses into the tissues from the blood; Carbon dioxide diffuses out of the tissues into the blood.

Into which adjacent structure do tertiary bronchi transmit air during inspiration?

• Alveoli.

• Bronchioles.

• Primary bronchi.

• Respiratory bronchioles.

Gas exchange in the tissues of the lung is known as —

• external respiration.

• internal respiration.

• pulmonary ventilation.

• respiratory gas transport.

If atmospheric pressure is greater than alveolar pressure, what process will occur?

• Exhalation.

• Inhalation.

• Lungs will collapse.

• No net movement of air.

During the process of normal exhalation —

• intercostals contract

• intrapulmonary pressure decreases

• air moves into alveoli

• lung volume decreases

During the process of normal inhalation

• intercostals contract

• intrapulmonary pressure decreases

• air moves out of the alveoli

• lung volume decreases

During the process of normal inhalation the air pressure inside the lung is —

• more than the atmospheric pressure outside, causing air move into the lungs

• less than atmospheric pressure outside, causing air moves out of the lungs

• less than atmospheric pressure outside, causing air to move into the lungs

• more than the atmospheric pressure outside, causing air to move out

How is most oxygen transported in the body?

• As carbaminohemoglobin

• Bound to hemoglobin

• Dissolved in blood plasma

• In the form of bicarbonate