Transport systems - animals N5

Name the four chambers of the human heart.

Answer explanation

The four chambers of the human heart are:

* Left ventricle

* Right ventricle

* Left atrium

* Right atrium

As shown in the image.

Once essential substances such as glucose and ​ (a)   have entered the animal's body, they must be carried to all the animal's cells at a rate that is ​ (b)   than is possible by diffusion. In ​ (c)   this rapid transport of essential materials is achieved by the animals ​ (d)  

• oxygen
• faster
• mammals
• circulatory system

What does the circulatory system consist of? (select all that apply)

• Heart

• Blood

• Blood vessels

• Haemoglobin

Blood from the body enters the ​ (a)   by the main vein called the ​ (b)   . The right atrium contracts pumping blood into the ​ (c)  

• right atrium
• vena cava
• right ventricle
• left ventricle
• Aorta
• left atrium

Answer explanation

Blood enters the right atrium from the body through the vena cava, the main vein. The right atrium contracts, pumping blood into the right ventricle

The pulmonary artery...

• carries blood from the lungs back to the heart to be oxygenated

• carries blood from the heart to the lungs where it takes up oxygen

• contracts, pumping blood into the right ventricle

Answer explanation

The pulmonary artery takes deoxygenated blood from the heart to the lungs, where it becomes oxygenated.

The pulmonary vein...

• takes blood to all parts of the body

• carries blood away from the heart to the lungs to be oxygenated

• returns oxygenated blood from the lungs to heart

Answer explanation

The pulmonary vein returns oxygenated blood from the lungs to the heart's left atrium so that oxygenated blood can then be pumped around the body to deliver oxygen to every area.

The __ takes blood to all parts of the body

What areas are more muscular in the heart?

• Atrium

• Ventricles

Answer explanation

The ventricles are thicker because blood is pumped out of the heart at a greater pressure in these chambers in comparison to the atria

What is the purpose of the valves in the heart?

• To withstand the high pressure

• To carry blood towards the heart

• Prevent backflow of blood

Match the following

• Valve

• A vessel that carries blood towards the heart

• Vein

• A vessel that carries blood away from the heart

• Artery

• Present in the heart and veins to prevent backflow of blood

• Capillaries

• Small vessels that allow exchange to occur through their thin walls