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terminal respiratory unit.Medical dictionary. 2011.
acinus — One of the minute grape shaped secretory portions of an acinous gland. Some authorities use the terms a. and alveolus interchangeably, whereas others differentiate them by the constricted openings of the a. into the excretory duct. [L. berry,… … Medical dictionary
Acinus, pulmonary — The ending of a tiny airway in the lung, where the alveoli (air sacs) are located. In anatomy, an acinus is a round cluster of cells, usually epithelial cells, that looks somewhat like a knobby berry. The word acinus means berry in Latin. (The… … Medical dictionary
Chronic obstructive pulmonary disease — Classification and external resources Gross pathology of a lung showing centrilobular type emphysema characteristic of smoking. This close up of the fixed, cut lung surface shows multiple cavit … Wikipedia
lobule — A small lobe or subdivision of a lobe. SYN: lobulus [TA]. ala central l. [TA] SYN: wing of central l.. SYN: pars inferior alae lobuli centralis [TA], pars superior ali lobuli centralis [TA]. ansiform l. comprises the greater part of the … Medical dictionary
unit — 1. One; a single person or thing. 2. A standard of measure, weight, or any other quality, by multiplications or fractions of which a scale or system is formed. 3. A group of persons or things considered as a whole because of mutual activities or… … Medical dictionary
terminal respiratory unit — the part of the lung distal to a single terminal bronchiole; it is the anatomical and functional unit of the lung and consists of a respiratory bronchiole, two or more alveolar ducts, and alveoli. Called also primary lobule of lung, pulmonary… … Medical dictionary
respiratory disease — ▪ human disease Introduction any of the diseases and disorders that affect human respiration (respiration, human). Diseases of the respiratory system may affect any of the structures and organs that have to do with breathing, including the… … Universalium
Emphysema — For the condition describing air trapped under the skin, see subcutaneous emphysema. Emphysema Classification and external resources A lateral chest x ray of a person with emphysema. Note the barrel chest and flat diaphragm … Wikipedia
alveolus — A small cell, cavity, or socket. 1. SYN: pulmonary a.. 2. One of the terminal secretory portions of an alveolar or racemose gland. 3. One of the honeycomb pits in the wall of the stomach. 4. SYN … Medical dictionary
Cell — The basic structural and functional unit in people and all living things. Each cell is a small container of chemicals and water wrapped in a membrane. Each cell in the human body there are 100 trillion cells in each of us contains the entire… … Medical dictionary
