Definition

1. Noun:
   • The bronchi and lungs: The "lower respiratory tract" refers specifically to the anatomical structures located below the larynx (voice box), primarily comprising the trachea (windpipe), bronchi, bronchioles, and the lungs themselves. It is the section of the respiratory system responsible for gas exchange.

Usage

• The term "lower respiratory tract" is used in medical, biological, and health contexts to distinguish this part of the airway from the upper respiratory tract (nose, nasal cavity, pharynx, larynx).
• It is typically used as a singular noun phrase.

Examples

• Noun:
  • Pneumonia is an infection that inflames the air sacs in one or both lungs, affecting the lower respiratory tract.
  • The doctor explained that the illness had progressed from his throat into his lower respiratory tract.
  • Smoking can cause significant damage to the lower respiratory tract over time.

Advanced Usage

• "Lower respiratory tract infection (LRTI)": A common medical term for infections such as bronchitis and pneumonia that occur in this region.
  • Hospital admissions often increase during winter due to lower respiratory tract infections.

Variants and Related Words

• Upper respiratory tract (n): The part of the respiratory system above the larynx, including the nose, sinuses, pharynx, and larynx.
• Respiratory system (n): The complete biological system consisting of organs and structures used for breathing, including both the upper and lower tracts.

Synonyms

• Pulmonary tract: A less common synonym emphasizing the lungs.
• Bronchopulmonary system: A technical term referring to the bronchi and lungs together.

Notes

• The "lower respiratory tract" is a fixed anatomical term. It is not commonly used in idioms or phrasal verbs.
• Understanding this term is crucial for discussing respiratory health, diseases, and medical treatments.

Noun

1. the bronchi and lungs