Respiratory System Functions

Flashcards based on key functions and anatomical terms related to the respiratory system.

Nasopharynx

Passage for air, filters and humidifies inhaled air.

Oropharynx

Passage for air, food, and liquids; helps in swallowing.

Laryngopharynx

Passage for air and food, leads to the larynx and esophagus.

Glottis

Controls airflow to the lungs; involved in sound production.

Epiglottis

Covers the trachea during swallowing to prevent food from entering the lungs.

Vocal cords

Produce sound when air passes through them.

Thoracic Cavity

Contains and protects the lungs, heart, and other structures.

Parietal pleura

Lines the thoracic cavity; protects lungs and provides lubrication.

Visceral pleura

Covers the lungs; provides lubrication to reduce friction during breathing.

Larynx

Produces sound, protects the trachea during swallowing, regulates airflow.

Thyroid Cartilage

Provides structure and protection for the vocal cords.

Cricoid Cartilage

Provides support and structure to the larynx and trachea.

Trachea

Air passage between the larynx and lungs.

Esophagus

Transports food and liquids from the mouth to the stomach.

Apex

Facilitates gas exchange and provides lung expansion.

Right superior lobe

Facilitates gas exchange in the right lung.

Right middle lobe

Facilitates gas exchange in the right lung.

Right inferior lobe

Facilitates gas exchange in the right lung.

Diaphragm

Primary muscle for breathing; helps expand and contract the lungs.

Left superior lobe

Facilitates gas exchange in the left lung.

Left inferior lobe

Facilitates gas exchange in the left lung.

Principal bronchi

Main passageways for air to enter each lung.

Bronchioles

Carry air to the alveoli, where gas exchange occurs.

Alveoli

Site of gas exchange (oxygen and carbon dioxide) in the lungs.