The Respiratory System

What is the main function of the respiratory system?

• To break down food

• Supply the blood with oxygen

• Circulate the blood

External respiration involves air/ gases moving into and out of the lungs:

• True

• False

When you breathe in air, you bring oxygen into your lungs and blow out:

• Carbon monoxide

• Carbon dioxide

• Oxygen

• Hydrogen

What is the name of the tiny air sacs in the lungs?

• Bronchioles

• Capillaries

• Alveoli

• Bronchus

What happens when you breathe in?

• Your diaphragm expands and your ribcage contracts

• Your diaphragm contracts and your ribcage expands

• Your diaphragm explodes and your ribcage contracts

• Your diaphragm does not move and your ribcage expands

What are capillaries?

• Tiny air sacs in your lungs

• Tiny blood vessels in your lungs

• Tiny blood cells in your lungs

• Large blood cells in your lungs

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

• Gas exchange

• Absorption of nutrients

• Transport of oxygen

• Structural support

Normal respiration rates for an adult person at rest ranges from_ to _ breaths per minute:

• 8-10 bpm

• 12-20 bpm

• 22-30 bpm

• 0-6 bpm

This is the amount of air that is exchanged by the lungs at rest:

• Tidal Volume

• Expiratory reserve volume

• Residual volume

• Minute ventilation

Air passes through this passage way:

• Diaphragm

• Haemoglobin

• Nasal Cavity

• Capillaries