Vitamin c is relatively nontoxic

Upper respiratory tract includes

Pharynx

Alveoli

Two mainstem bronchi divided into five labor bronchi, three in the left and two in the right

Right lung

Parietal pleural is membrane that covers the Lungs

Negative pressure in the minute space between the pleurae serves to keep the lungs inflated

The amount of gas remaining in lungs after normal expiration

Maximum amount of air patient can breathe in after a resting expiration

With age

In obstructive lung disease

During inspiration, thoracic spine extends enabling greater excursion of the sternum

Transverse diameter can be increased by

During inspiration, angle at costochondral junction increase making ribs segments shorter

During inspiration, vertical dimention can be increased by