Respiratory System

The upper respiratory tract includes all of these except the: ________________.

• nasal cavities

• soft palate

• primary bronchi

• nasopharynx

During swallowing, the larynx is covered by the: _______________.

• soft palate

• epiglottis

• vocal cords

• thyroid cartilage

During swallowing, the nasopharynx is covered by the: __________________.

• hard palate

• oropharynx

• epiglottis

• soft palate

The trachea is kept open by which tissue?

• fibrous connective tissue

• cartilage

• ciliated epithelium

• elastic connective tissue

In the nasal cavities and trachea, mucus and pathogens are swept to the pharynx by: _______________.

• ciliated epithelium

• simple squamous epithelim

• cartilage

• elastic connective tissue

The part of the pharynx that is a passageway for air only is the: _________________________.

• nasopharynx

• oropharynx

• laryngopharynx

• tracheopharyn

Inhaled air passes from the trachea to the: _________________.

• primary bronchi

• larynx

• pharynx

• secondary bronchi

The serous fluid between the pleural membranes keeps the membranes together and: _______________.

• exchange gases

• creates friction

• destroys pathogens

• prevents friction

The tissue fluid that lines the alveoli is important to: ________________.

• prevent diffusion of gases

• prevent friction

• trap pathogens

• permit diffusion of gases

The respiratory centers in the brain are located in the: ________________.

• pons and cerebral cortex

• medulla and cerebral cortex

• hypothalamus and pons

• medulla and pons