Lower Respiratory System.txt

Hollow sphere of cells in the lungs where oxygen and carbon dioxide are exchanged

Rounded top of each lung

Small tubular air passage that branches of from a bronchus and then branches into several alveoli. Its wall contains smooth muscle.

Tubular air passageway supported by cartilage rings. It forms an inverted Y below the trachea. Each primary bronchus enters a lung and branches into bronchioles. The bronchial tree includes the trachea, bronchi, and bronchioles. Bronchopulmonary refers to the bronchi and the lungs

Small hairs that flow in waves to move foreign particles away from the lungs and toward the nose and the throat where they can be expelled

Lidlike structure that seals off the larynx, so that swallowed food into the esophagus, not into the trachea

Indentation on the medial side of each lung where the bronchus, pulmonary arteries, and nerves enter the lung and the pulmonary veins exit

Structure that contains the vocal chords and is a passageway for inhaled and exhaled air. Its known as the voice box

Large division of a lung, visible on the outer surface

Central opening through which air flows inside the trachea , a bronchus, or a bronchiole

Organ of respiration that contains alveoli

Functional part of the lung (i.e., the alveoli) as opposed to the connective tissue framework

Protein-fat compound that reduces surface tension and keeps the walls of the alveolus from collapsing with each exhalation

Vertical tube with C-shaped rings of cartilage in it. Its an air passageway between the larynx and the bronchi

Alveolus (air sack)

Bronchiole

Bronchus

Bronchus

Lung

Glottis (of the larynx)

Hilum (indentation in an organ)

Larynx (voice box)

Lung; air

Lung; air

Trachea (windpipe)