Lower Respiratory Tract consists of?

Bronchi, Bronchioles, Alveoli, Lungs, Diaphragm

Bronchi description?

Two passageways the trachea branches into Lined with cilia and mucus

Bronchi function?

Lead air into lungs

Bronchioles description?

Smaller tubes that branch from bronchi into lobes of lungs Lined with cilia and muscus

Bronchioles function?

These tubes lead air to the alveoli

Alveoli description?

Millions per lung Cluster of microscopic, one cell thick air sacs Moist and surrounded by capillaries

Alveoli function?

Site of gas exchange during respiration (air in the lungs and blood in capillaries)

Lungs description?

Protected by ribs, sternum, and spine Right lung has three lobes, left lobe two.

Lungs function?

Contains variety of tubes/chambers where gases are exchanged between lungs and blood

Diaphragm description?

Dome shaped layer of muscle that separates the lungs from the stomach and liver

Diaphragm function?

It's movement is responsible for breathing Inhale - contracts Exhale - relaxes