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Anatomy Wk 12
Respiratory System
Term | Definition |
---|---|
alveolar duct | airway that branches from the smallest bronchioles; alveolar sacs arise from alveolar ducts |
alveolus | literally, a small cavity; alveoli of lungs are microscopic saclike dilations of terminal bronchioles; gas exchange in the lungs occurs across the membranes of the alveoli |
arytenoid cartilage | either of a pair of cartilages found in the supporting framework of the larynx |
bronchiole | small branch of a bronchus |
bronchopulmonary segment | region of the lung supplied by a tertiary bronchus [bronch-windpipe, |
costal surface | region of the lungs that lies against the ribs; rounded to match contour of thoracic cavity |
hilum | lit on medial surface of each lung where primary bronchi and pul-monary vessels enter; slit on medial surface of each kidney where blood vessels and other structures enter the kidney; any other such notch or slit in an organ |
horizontal fissure | separates the superior lobe of the right lung from the middle lobe |
lingual tonsil | tonsil located at the base of the tongue |
oblique fissure | fissure in the lungs that separates the inferior and medial lobes |
palatine tonsil | either of a pair of tonsils located behind and below the pillars of the fauces |
parietal pleura | serous membrane that lines the entire tho-racic cavity |
vibrissa | coarse hair found in the skin of the vestibule of the nose |
visceral pleura | the serous membrane that adheres to and covers the lung |
vomeronasal organ (VNO) | sensory organ for detecting pheromones (sex signal molecules) located in the muscosa of the nasal septum |