Vocab (eng)

alveolus (plural: alveoli)

Air sac in the lung

bronchus (plural: bronchi)

Branch of the trachea (windpipe) that is a passageway into the lung; bronchial tube

inspiration

Breathing in (inhalation)

expiration

Breathing out (exhalation)

lobe

Division of a lung.

pleura

Double-layered membrane surrounding each lung

pulmonary parenchyma

Essential parts of the lung, responsible for respiration; bronchioles and alveoli.

visceral pleura

Inner layer of pleura lying closer to the lung tissue

epiglottis

Lid-like piece of cartilage that covers the larynx, preventing food from entering the larynx and trachea during swallowing.

base of the lung

Lower portion of the lung; from the Greek basis, foundation. Basilar means located at or in the base.

adenoids

Lymphatic tissue in the nasopharynx; pharyngeal tonsils.

hilum of the lung

Midline region where the bronchi, blood vessels, and nerves enter and exit the lungs. Hilar means pertaining to (at) the hilum.

diaphragm

Muscle separating the chest and abdomen. It contracts to pull air into the lungs and relaxes to push air out.

palatine tonsil

One of a pair of almond-shaped masses of lymphatic tissue in the oropharynx (palatine means pertaining to the roof of the mouth).

paranasal sinus

One of the air cavities in the bones near the nose.

nares

Openings through the nose carrying air into the nasal cavities.

parietal pleura

Outer layer of pleura lying closer to the ribs and chest wall.

respiration

Process of moving air into and out of the lungs; breathing

mediastinum

Region between the lungs in the chest cavity. It contains the trachea, heart, lymph nodes, aorta, esophagus, and bronchial tubes.

glottis

Slit-like opening to the larynx.

bronchioles

Smallest branches of the bronchi. Terminal bronchioles lead to alveolar ducts.

pleural cavity

Space between the folds of the pleura.

cilia

Thin hairs attached to the mucous membrane epithelium lining the respiratory tract. They clear bacteria and foreign substances from the lung.

pharynx

Throat; including the nasopharynx, oropharynx, and laryngopharynx.

apex of the lung

Tip or uppermost portion of the lung. Apical means pertaining to or located at the apex.

larynx

Voice box; containing the vocal cords.

trachea

Windpipe.