Parts of the Respiratory System and Their Functions

Front

The biochemical process in which the cells of an organism obtain energy by combining oxygen and glucose, resulting in the release of carbon dioxide, water, and ATP.

Back

Respiration

Front

The physical process of inhalation and exhalation wherein oxygen is obtained and carbon dioxide is expelled.

Back

Breathing

Front

1. Breathing 2. External respiration 3. Transport of respiratory gases 4. Internal respiration.

Back

Four processes of respiration

Front

Gas exchange occurs between the alveoli of the lungs and blood.

Back

External respiration

Front

Blood transports oxygen from the alveoli to the cells and carbon dioxide from the cells to the alveoli.

Back

Transport of respiratory gases

Front

Gas exchange occurs between the blood and cells.

Back

Internal respiration

Front

Includes the nasal cavity, pharynx, and larynx.

Back

Upper respiratory tract

Front

Includes the trachea, bronchi, bronchioles, alveoli, lungs, and diaphragm.

Back

Lower respiratory tract

Front

First entry point for inhaled air.

Back

Nasal cavity

Front

Lined with mucus that traps microorganisms and debris in inhaled air.

Back

Vestibule region