Anatomy & Physiology - Respiratory System

Which gas do we breathe in most during one breath?

• Oxygen

• Carbon Dioxide

• Nitrogen

• None of these

What percentage of oxygen do we breathe in?

• 10%

• 20%

• 30%

• 50%

Which of these make up the lungs?

• Trechea

• Bronchi/Bronchioles

• Alveoli

• All of these

What happens when you breathe in?

• Nothing

• Your diaphragm moves up

• Your diaphragm moves down

• Air moves out

What happens when you breathe out?

• Nothing

• Your diaphragm moves up

• Your diaphragm moves down

• Air moves in

Which of these are true when you breathe in?

• Diaphragm contracts and lowers (descends)

• Rib cage expands

• Lungs inflate (fill with air)

• All of these

Which comes first in the journey of air through the body?

• Nose/Mouth

• Trachea

• Bronchioles

• Alveoli

What is the larynx also known as?

• Lungs

• Funny bone

• Voice box

• None of these

What is a function of the nose?

• Filter air

• Warm air

• Moisten air

• All of these

Where does gaseous exchange occur?

• Bronchi

• Trachea

• Throat

• Alveoli