Respiratory System By me

What is the main function of the respiratory system?

• Digest food

• Control body temperature

• Pump blood

• Take in oxygen and release carbon dioxide

Where does air enter the body in the respiratory system?

• Eyes

• Trachea

• Lungs

• Nose and mouth

What is the long tube made of muscle and cartilage that the air travels into?

• Trachea

• Larynx

• Esophagus

• Bronchi

What do the bronchi split into to take air to each lung?

• Alveoli

• Bronchioles

• Capillaries

• Pithctungs

What are the smaller branches of the bronchi called?

• Alveoli

• Bronchioles

• Capillaries

• Pithctungs

What are the air sacs called that are covered in tiny blood vessels?

• Capillaries

• Bronchioles

• Alveoli

• Pithctungs

Which muscle helps in expanding the lungs to take in oxygen?

• Diaphragm

• Quadriceps

• Hamstrings

• Biceps

What happens to the lungs when the diaphragm relaxes?

• Contract and release carbon dioxide

• Expand and take in oxygen

• Collapse

• Stay the same size

What gas is released by the respiratory system?

• Oxygen

• Hydrogen

• Nitrogen

• Carbon dioxide

What covers the alveoli in the respiratory system?

• Bones

• Capillaries

• Nerves

• Muscles