lungs
They bring oxygen into blood and remove carbon dioxide. This topic is part of Human Body within Science & Nature. This page currently draws on 30 supporting questions, with answers and bonus facts available below.
lungs trivia questions
The lungs are organs primarily used for what?
Answer: Gas exchange
Bonus fact: They bring oxygen into blood and remove carbon dioxide.
What tiny air sacs are the main sites of gas exchange in lungs?
Answer: Alveoli
Bonus fact: Alveoli provide a large surface area.
What membrane surrounds each lung and lines the chest cavity?
Answer: Pleura
Bonus fact: Pleural fluid reduces friction during breathing.
Many amphibians begin life in water with gills and later develop lungs through what process?
Answer: Metamorphosis
Bonus fact: Frog tadpoles are a familiar example of amphibian metamorphosis.
What tiny structures in the lungs exchange gases with blood?
Answer: Alveoli
Bonus fact: Alveoli provide a large thin surface for diffusion.
Which valve controls blood leaving the right ventricle for the lungs?
Answer: Pulmonary valve
Bonus fact: It opens into the pulmonary artery.
Oxygen exchange in the lungs occurs mainly in what structures?
Answer: Alveoli
Bonus fact: Alveoli are surrounded by capillaries.
What kind of blood does the pulmonary artery carry from the heart toward the lungs?
Answer: Oxygen-poor blood
Bonus fact: The pulmonary veins return oxygen-rich blood from the lungs to the left side of the heart.
Which blood cells carry oxygen from the lungs to body tissues?
Answer: Red blood cells
Bonus fact: Red blood cells use hemoglobin to transport oxygen.
In the lungs, where does oxygen pass into surrounding capillaries?
Answer: Alveoli
Bonus fact: Carbon dioxide moves in the opposite direction, from capillary blood into the alveoli.
Which blood vessels carry oxygen-rich blood from the lungs to the left side of the heart?
Answer: Pulmonary veins
Bonus fact: Pulmonary veins are unusual among veins because they carry oxygen-rich blood.
The chest contains the heart and what major breathing organs?
Answer: Lungs
Bonus fact: The thoracic cavity houses the heart and lungs.