Converse of object

• call: The hollow chamber at the front of the guard is called the alveolus.

• surround: The pulmonary arteries form pulmonary capillaries, which surround alveoli.

• ventilate: Experimental and clinical studies in the 80's confirmed that high peak airway pressures in ventilated alveoli lead to further lung damage.

• fill: This main histological feature is due to severe hemorrhage into the alveoli ( alveoli filled with red blood cells ).

• enter: As the oxygen enters the alveoli, it has a partial pressure of oxygen of about 100 mm/Hg.

Adjective modifier

• small: The small alveolus will get smaller, the large one will get larger, and so on until the small alveolus collapses completely!

• tiny: Each tiny alveolus is surrounded by a network of capillaries that joins veins and arteries.

• maxillary: A recent photograph shows the broad, expanded maxillary alveolus and acutely vaulted hard palate.

Modifies a noun

• cannot: The alveoli cannot deflate completely so less oxygen is taken into the lungs, leading to breathing difficulties.

Noun used with modifier

• lung: However, deep inhalation is still required to produce the rapid pulse of nicotine to the brain associated with absorption in the lung alveoli.

Preposition: in

• lung: There are about 300 million alveoli in each lung.

Preposition: of

• lung: External respiration takes place in the alveoli of the lungs.