respiratory system

Primary function of respiratory system

Oxygen supply to cells and removal of carbon dioxide.

Major components of respiratory system

Nose, pharynx, larynx, trachea, bronchi, lungs.

Lung lobes

Right lung has 3 lobes; left lung has 2 lobes with cardiac depression.

Diaphragm movement

Inhalation: moves downward; Exhalation: moves upward.

larynx

holds vocal cords, voicebox

Definition of trachea

Windpipe leading from larynx to bronchi.

Definition of bronchi

Two main branches of trachea leading to lungs.

Definition of bronchioles

Smaller branches of the bronchi.

Definition of alveoli

Tiny lung sacs where gas exchange occurs.

Definition of diaphragm

Muscle wall separating thorax and abdomen; essential for breathing.

Pharynx is another term for ________

throat

external respiration

process of inhaling oxygen into the lungs and exhaling carbon dioxide

What is the function of cilia?

Catches pathogens that enter through the nose

Long, relaxed vocal cords produce _______ notes.

low

The 2 main branches at the bottom of the trachea that provide a passageway for air to the lungs is called the ________

bronchi

What structure helps prevent choking?

epiglottis

What muscles aid in inhalation?

diaphragm & intercostal

What is the normal respiration rate for adults?

12-16