Starter quiz
- The cardiovascular system links with the ______ system to get air in to the body to the working muscles.
- skeletal
- muscular
- respiratory ✓
- nervous
-
- Where does air enter our body?
- 'nose' ✓
- Exercise increases heart rate as more oxygen is required around the body.
- True ✓
- False
Name the organ that has been identified in the image below.- 'lung' ✓
- Match the correct component to the body system it is part of.
- bronchi⇔respiratory system ✓
- pectorals⇔muscular system ✓
- capillary⇔cardiovascular system ✓
- ribcage⇔skeletal system ✓
- The process where oxygen and carbon dioxide are switched between the lungs or the muscles and the bloodstream is known as?
- breathing
- respiration
- blood flow
- gaseous exchange ✓
-
Exit quiz
Which part of the respiratory system is identified in the image below?- 'trachea' ✓
- Where does gaseous exchange take place?
- alveoli ✓
- bronchioles
- heart
- capillaries ✓
-
- What happens to the rate of gaseous exchange when a person exercises?
- it increases ✓
- it decreases
- it stays the same
- It stops.
-
- Put the pathway of air into the correct order.
- 1⇔Air containing oxygen enters the body via the nose or mouth.
- 2⇔Oxygen travels down the trachea to the lungs.
- 3⇔Oxygen then travel through either the right or left bronchus.
- 4⇔The oxygen then travels down the bronchioles.
- 5⇔Oxygen reaches the alveoli.
- 6⇔This is where gaseous exchange happens as oxygen then diffuses into the blood.
- Carbon dioxide ______ from a high concentration in the blood capillary to a low concentration in the alveoli.
- 'diffuses' ✓
- Describe the process of gaseous exchange when you breathe out by putting the statements in the correct order.
- 1⇔Working muscles produce waste products like carbon dioxide.
- 2⇔Carbon dioxide diffuses from the muscle fibres to the blood capillaries.
- 3⇔The veins take the blood back to the heart.
- 4⇔The heart pumps the blood back to the lungs.
- 5⇔Carbon dioxide in the blood capillaries diffuse into the alveoli.
- 6⇔The carbon dioxide then travels up through the respiratory system to be exhaled.
Worksheet
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Video
Lesson Details
Key learning points
- Air enters through the mouth/nose, travels down the trachea and bronchi to the alveoli where gaseous exchange occurs.
- Gaseous exchange is the process of diffusion where oxygen moves into the body and carbon dioxide moves out.
- Diffusion is the movement of particles (e.g. oxygen) from an area of high to an area of low concentration.
- Gaseous exchange increases during/immediately after exercise.
Common misconception
Gaseous exchange only involves oxygen.
Gaseous exchange is when oxygen and carbon dioxide diffuse between the lungs and the blood, and then between the blood and muscle tissues.
Keywords
Trachea - the windpipe that connects the larynx (voice box) to the bronchi, allowing air to pass to and from the lungs
Bronchi - two main branches off the trachea that lead to the lungs, where they further divide into bronchioles
Alveoli - tiny air sacs in the lungs where gaseous exchange between air and blood takes place
Gaseous exchange - the process where oxygen and carbon dioxide are switched between the lungs or the muscles and the bloodstream
Diffusion - the movement of molecules from an area of higher concentration to an area of lower concentration
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