Sience 9

Which of the following is the function of the respiratory system?

• send signals to the spinal cord and instruct other organs what to do

• take waste products and bring them out of the body

• to allow the exchange of gases to provide parts of the body with oxygen

• to take in glucose and transform it into energy

What are the parts of the respiratory system?

• lungs, air sac, ribs, liver

• lungs, trachea, larynx, pharynx, bronchi, bronchioles, alveoli, nasal, cavity

• lungs, trachea, larynx, pharynx, bronchi, bronchioles, alveoli, nasal cavity, heart

• throat, bronchioles, bronchi, alveoli, stomach, ribs

What is the flow of air during inhalation?

• lungs, mouth

• mouth, lungs, respiratory tubes

• mouth, respiratory tubes, lungs

• mouth, respiratory tubes, stomach, lungs

Where is the site of gas exchange and what material diffuses in and out of the blood?

• alveoli, O2 ​and CO2

• diaphragm, O2, ​and CO2

• lungs, Alveoli, O2​, and glucose

• lungs, Alveoli, O2 ​and N2

What organ filters out air?

• cilia

• lungs

• nostrils

• trachea

What do you call the flap that covers the passageway for air when eating or drinking?

• bronchi

• epiglottis

• larynx

• pharynx

What do you call the voice box which enables a person to produce sounds and speak?

• alveoli

• bronchi

• larynx

• pharynx

Where is the first entry of air during inhalation?

• bronchioles

• mouth

• nostrils

• trachea

What will happen if the respiratory and digestive tracts are completely separate in humans?

• it is impossible to breathe

• it will be harder to swallow the food

• there would be no need for an epiglottis

• trachea is not necessary anymore.

Which of the following is anatomically incorrect?

• The lungs contain many alveoli.

• The nasal and oral cavities are connected

  to the larynx through the pharynx.

• There are two nasal cavities in the nose.

• The trachea enters the lungs.