Respiratory System

Microscopic air sacs in the lungs where gas exchange occurs are called

• villi

• alveoli

• bronchioles

• uvula

The trachea branches into two

• bronchioles

• alveoli

• epiglottis

• bronchi

Cartilaginous rings in the airways help to

• hold the airways open and prevent collapse

• exchange CO2 and O2 in the lungs

• prevent choking by covering the trachea when swallowing

• trap dirt, dust and bacteria as it enters your system

All the airways are lined with

• cilia and mucus

• mucus and bile

• gastric juice and HCl

• emulsify and enzymes

Oxygen enters the __________ and Carbon Dioxide enters the ____________ in gas exchange

• alveoli

  blood

• trachea

  trachea

• blood

  alveoli

• small intestine

  large intestine

A disease in which the alveoli get degraded and burst from smoking or pollution

• asthma

• emphysema

• lung cancer

• gout

A chronic allergy that restricts the size of the bronchioles

• asthma

• lung cancer

• bronchitis

• diarrhea

A genetic disorder characterized by excessive hard mucus buildup in the bodily organs

• Gallstones

• Pneumonia

• Emphysema

• Cystic Fibrosis

What is the purpose of the sinuses?

• gas exchange

• redirect the air back out of your ears

• keep air dry and cold

• keep air warm and moist

The muscle that controls inhalation and exhalation is called the

• heart

• lungs

• diaphragm

• nose