Parts and Function of Respiratory System

tiny hairs that are located on the surface cells of the mucous membrane that moves back and forth.

• nostril

• cilia

• trachea

• mouth

the voice box, where vocal chords are located

• pharynx

• larynx

• nose

• throat

a cartilaginous tube that connects the larynx to the bronchi of the lungs.

• trachea

• epiglottis

• esophagus

• rib

two branches at the end of the trachea, each lead to a lung

• bronchioles

• bronchi

• ribs

• epiglottis

the functional respiratory units (air sacs) in the lung where gases are exchanged

• bronchioles

• alveoli

• bronchi

• cilia

Which of the following is the function of respiratory system?

• transports carbon dioxide to all the cells in the body and remove oxygen

• intakes oxygen and expels carbon dioxide

• inhales carbon dioxide and exhales oxygen

During exhalation, The diaphragm _________ and moves ___________

• relaxes, upward

• contracts, downward

• relaxes, downward

• contracts, upward