Week 4

1.

1 point

What happens to air pressure in the lungs when the diaphragm relaxes?

Air pressure decreases

Air pressure increases

Inhalation

Nothing

2.

1 point

Valves are located between the atrium and ventricles. What role do the valves play?

To aid oxygenated blood to travel to the lungs

To ensure that blood only flows in one direction

To ensure the heart is sealed

To prevent other fluids from entering the heart

3.

1 point

The heart is separated into 2 sides, consisting of 4 chambers.

These are called:

Right and left atrium, right and left ventricle

Right and left chamber, right and left ventricle

Right and left atrium, right and left valves

Right and left aorta, right and left ventricle

4.

1 point

The vein that carried oxygenated blood from the lungs to the heart is called:

Aorta

Pulmonary vein

Vena cava

Right ventricle

5.

1 point

In the respiratory system, air flows in the following order:

Nasal cavity and mouth, pharynx, trachea, bronchi, bronchioles, alveoli

Nasal cavity and mouth, pharynx, trachea, bronchioles, bronchi, alveoli

Nasal cavity and mouth, pharynx, trachea, bronchi, alveoli, bronchioles

Nasal cavity and mouth, trachea, pharynx, bronchi, bronchioles, alveoli

6.

1 point

What is the role of capillaries?

Allow the passing of oxygen to tissues and removal of carbon dioxide

Removal of lactic acid

Carry vitamins and minerals to all tissues in the body

Stimulates fast and slow twitch muscle fibres during physical activity

7.

1 point

What occurs when the diaphragm contracts?

Yawning

Inspiration

Coughing

Exhalation

8.

1 point

The chamber of the heart that received de-oxygenated blood is:

Right atrium

Left atrium

Left ventricle

Right ventricle

9.

1 point

The left side of the heart is thicker and more muscular because:

Pumps de-oxygenated blood to the lungs

It is receives the oxygen-rich blood from the lungs and pumps it to the body

Has a thicker layer of fat which acts as protection

Allows carbon dioxide to be removed and oxygenated blood to be pumped around the body

10.

1 point

Arteries are responsible for :

removal of oxygen

Carrying blood to the heart

Carrying blood away from the heart

Gaseous exchange