the windpipe that connects the larynx (voice box) to the bronchi, allowing air to pass to and from the lungs

two main branches off the trachea that lead to the lungs, where they further divide into bronchioles

tiny air sacs in the lungs where gaseous exchange between air and blood takes place

the process where oxygen and carbon dioxide are switched between the lungs or the muscles and the bloodstream

the movement of molecules from an area of higher concentration to an area of lower concentration

Air pathway from the atmosphere to alveoli and gaseous exchange

Physical education

The structure of the heart

Blood vessels, blood cells and the vascular shunt

A practical exploration of the pathway of blood

The cardiac cycle

The relationship between heart rate, stroke volume and cardiac output

A practical exploration of how the cardio-respiratory systems work together

Mechanics of breathing and interpretation of a spirometer trace

This unit will examine the structure and function of both the cardiovascular and respiratory systems. It includes the correct anatomical names and location of different chambers, valves and blood vessels as well as the pathway of air through to the alveoli and how gaseous exchange occurs.

Anatomy and physiology: the cardio-respiratory system

Which part of the respiratory system is identified in the image below?

What happens to the rate of gaseous exchange when a person exercises?

Air containing oxygen enters the body via the nose or mouth.

Oxygen travels down the trachea to the lungs.

Oxygen then travel through either the right or left bronchus.

The oxygen then travels down the bronchioles.

This is where gaseous exchange happens as oxygen then diffuses into the blood.

Put the pathway of air into the correct order.

Carbon dioxide {{ }} from  a high concentration in the blood capillary to a low concentration in the alveoli.

Working muscles produce waste products like carbon dioxide.

Carbon dioxide diffuses from the muscle fibres to the blood capillaries.

The veins take the blood back to the heart.

The heart pumps the blood back to the lungs.

Carbon dioxide in the blood capillaries diffuse into the alveoli.

The carbon dioxide then travels up through the respiratory system to be exhaled.

Describe the process of gaseous exchange when you breathe out by putting the statements in the correct order.

The cardiovascular system links with the {{ }} system to get air in to the body to the working muscles.

Exercise increases heart rate as more oxygen is required around the body.

Name the organ that has been identified in the image below.

Match the correct component to the body system it is part of.

The process where oxygen and carbon dioxide are switched between the lungs or the muscles and the bloodstream is known as?

Air pathway from the atmosphere to alveoli and gaseous exchange

Lesson outcome