Respiratory System Vocabulary

A collection of vocabulary flashcards covering key terms related to the respiratory system.

Respiratory System

The system responsible for the exchange of gases in the body, including the lungs and airways.

Cellular Respiration

The process where cells use oxygen to produce ATP, releasing carbon dioxide as a byproduct.

ATP

Adenosine triphosphate, the energy currency produced in cellular respiration.

Carbon Dioxide

A gas byproduct of cellular respiration.

Aerobic Cellular Respiration

Cellular respiration that occurs in the presence of oxygen.

Nasal Cavity

The passageway where air is warmed, humidified, and filtered before it enters the lungs.

Pharynx

The junction of both food and air; part of the throat.

Trachea

A cylindrical tube with cartilage rings that provides air passage to the lungs.

Epiglottis

The structure that prevents food from entering the trachea during swallowing.

Alveoli

Tiny air sacs in the lungs that facilitate gas exchange.

Surfactant

A substance that reduces surface tension in the alveoli, promoting efficient lung function.

Pulse Oximetry

The monitoring and measurement of a person's pulse and oxygen saturation levels.

Nasal Turbinates

Bony structures within the nasal cavity that regulate inhaled air by warming, moistening, and filtering it.

Adenoids

Lymph tissues located in the throat that help trap and filter out harmful bacteria and viruses.

Tonsils

Special types of lymph tissues in the throat that aid in the immune response.

Bronchi

The main airways that branch off from the trachea and lead into the lungs.

Bronchiole Tubes

Smaller air passages that branch off from the bronchi and carry air into the lungs.

Vibrissae

Coarse hairs located in the nasal vestibule that filter large particles and dust from inhaled air.