Contents
- 1 What are the smallest branches of the airway called?
- 2 What is the trachea branches into two narrower airways called?
- 3 What structure is around the narrowest part of the airway?
- 4 What are the branching airways?
- 5 What are the structures of the lower airway?
- 6 Which is the smallest conducting airway in the trachea?
What are the smallest branches of the airway called?
In your lungs, the main airways (bronchi) branch off into smaller and smaller passageways — the smallest, called bronchioles, lead to tiny air sacs (alveoli).
What is the trachea branches into two narrower airways called?
The windpipe (trachea) is the largest airway. The trachea branches into two smaller airways: the left and right bronchi, which lead to the two lungs.
What is the Carina?
(kuh-RY-nuh TRAY-kee-uh) A ridge at the base of the trachea (windpipe) that separates the openings of the right and left main bronchi (the large air passages that lead from the trachea to the lungs). Also called tracheal carina.
What structure is around the narrowest part of the airway?
The narrowest part of the adult airway is the vocal cords, but, in children, the narrowest part is the cricoid cartilage located in the subglottic area of the larynx. The trachea is a cylindrical structure formed by 16-20 U-shaped cartilaginous rings and a muscular/cartilaginous part that completes the tube.
What are the branching airways?
The bronchi themselves branch many times into smaller airways, ending in the narrowest airways (bronchioles), which are as small as one half of a millimeter (or 2/100 of an inch) across. The airways resemble an upside-down tree, which is why this part of the respiratory system is often called the bronchial tree.
What is the medical term for small airways?
small airways. A term for membranaceous bronchioles–noncartilaginous conducting airways with a fibromuscular wall and respiratory bronchioles–airways in which the fibromuscular wall is partially alveolated.
What are the structures of the lower airway?
The lower airway is made up of all structures below the larynx (voice box). As in the upper airway, there are structures that transfer air; the trachea, bronchi, and bronchioles, and structures that allow oxygen and carbon dioxide to be exchanged with the blood, the alveoli.
Which is the smallest conducting airway in the trachea?
The lobar bronchi then progressively split into shorter and narrower airways until the final, smallest conducting airway known as the terminal bronchiole is reached. On average there are roughly 17 branch points between the trachea and any particular terminal bronchiole.
Which is the smallest branch of the bronchial tree?
Acini are airways that originate from the terminal bronchioles. Respiratory bronchioles are the smallest bronchioles (< 0.5 mm in diameter); they connect the terminal bronchioles to the alveolar ducts. Gas exchange in the bronchial tree is initiated in the respiratory bronchioles.