bronchus
Sign in to saveA bronchus ( ; : bronchi, ) is a passage or airway in the lower respiratory tract that conducts air into the lungs. The first or primary bronchi to branch from the trachea at the carina are the right main bronchus and the left main bronchus. These are the widest bronchi, and enter the right lung, and the left lung at each hilum. The main bronchi branch into narrower secondary bronchi or lobar bronchi, and these branch into narrower tertiary bronchi or segmental bronchi. Further divisions of the segmental bronchi are known as 4th order, 5th order, and 6th order segmental bronchi, or grouped tog
AI overview
A bronchus is an airway in your lower respiratory tract that carries air down into your lungs, branching off from your trachea (windpipe) into progressively narrower tubes. These branching airways matter because they're essential for delivering air deep into your lungs, where oxygen can be absorbed into your bloodstream.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Anatomy.Name
- Bronchus
- Anatomy.Latin
- bronchus
- Anatomy.Greek
- βρόγχος
- Anatomy.Image
- 3D Medical Animation Bronchus Description.jpg
- Anatomy.Caption
- The bronchi are conducting passages for air into the lungs.
- Anatomy.Image2
- Blausen 0770 RespiratorySystem 02.png
- Anatomy.Caption2
- The bronchi form part of the lower respiratory tract
- Anatomy.System
- Respiratory system
- Anatomy.Artery
- Bronchial artery
- Anatomy.Vein
- Bronchial vein
- Anatomy.Nerve
- Pulmonary branches of vagus nerve
via Wikipedia infobox
Article
13 sectionsContents
- Structure
- Microanatomy
- Variation
- Function
- Clinical significance
- Bronchitis
- Aspiration
- Asthma
- Bronchial atresia
- Additional images
- Citations
- Sources
- External links
A bronchus ( ; : bronchi, ) is a passage or airway in the lower respiratory tract that conducts air into the lungs. The first or primary bronchi to branch from the trachea at the carina are the right main bronchus and the left main bronchus. These are the widest bronchi, and enter the right lung, and the left lung at each hilum. The main bronchi branch into narrower secondary bronchi or lobar bronchi, and these branch into narrower tertiary bronchi or segmental bronchi. Further divisions of the segmental bronchi are known as 4th order, 5th order, and 6th order segmental bronchi, or grouped together as subsegmental bronchi. The bronchi, when too narrow to be supported by cartilage, are known as bronchioles. No gas exchange takes place in the bronchi.
==Structure== The trachea (windpipe) divides at the carina into two main or primary bronchi, the left bronchus and the right bronchus. The carina of the trachea is located at the level of the sternal angle and the fifth thoracic vertebra (at rest).