respiratory system

the respiratory system is responsible for:

• oxygen entering the body and carbon dioxide leaving the body

• carbon dioxide entering the body and oxygen leaving the body.

• nitrogen leaving the blood stream.

• the regulation of nutrient absorption.

Which structure is the initial entry way for air to enter the respiratory system?

• pharynx

• nose

• lungs

• trachea

Which part of the respiratory system carries out gas exchange?

• bronchus

• lungs

• larynx

• nasal cavity

Which of the following is not part of the lower respiratory tract?

• bronchi

• trachea

• larynx

• lungs

What diffuses from the air in the alveoli into the blood?

• carbon dioxide

• nitrogen

• oxygen

• water

Which of the following is not part of the upper respiratory tract?

• epiglottis

• pharynx

• glottis

• bronchi

Which respiratory structure is used to produce sound?

• larynx

• nose

• glottis

• pharynx

what keeps the nasal cavity warm and humid

• hairs

• mucous

• water

• oxygen

The lungs are covered with a thin membrane called the

• bronchioles

• synovial

• serous

• pleura

what is the large, flat muscle connected to the ribs at the bottom of the chest cavity.

• lungs

• diaphragm

• pharynx

• larynx