The Circulatory System Summer 2026

The Circulatory System

By Sara Alattar

​Circulation is the process by which blood is transported in blood vessels, to and from the various different parts of the body, by the pumping action of the heart.

Multiple Choice

What is the main function of the heart?

• Make blood

• Strengthen body cells

• Filter wastes

• Pump Blood

Multiple Choice

______________________ is the process by which blood is transported in blood vessels, to and from the various different parts of the body, by the pumping action of the heart.

• Circulation
• Excretion
• Digestion

​Parts of Circulatory System

Heart: Pumping blood to different parts of the body.
Blood: Carries materials between the heart and different body parts.
Blood Vessels: Channels that carry blood throughout the body.

Multiple Choice

______________Pumps blood to different parts of the body.

• The lungs
• The liver
• The heart

Multiple Choice

________________ are Channels that carry blood throughout the body.

• Muscles
• Blood vessels
• Nerves

Multiple Choice

___________________Carries materials between the heart and different body parts.

• Lungs
• Blood vessels
• Stomach

​

▶Transports important substances, such as oxygen and nutrients, to all parts of the body.

▶Distributes heat throughout the body.

▶Carries:

• waste products, such as carbon dioxide, away from body cells.

• disease-fighting materials produced by immune system.

• hormones to target organs

Multiple Choice

Circulatory system is responsible for distributing heat throughout the body.

• False
• True

Multiple Choice

Carrying waste products, such as carbon dioxide, away from body cells.

is a function of the _____________

• digestive system
• circulatory system
• nervous system

Multiple Select

Blood __________________________

Choose two answers

• carries disease-fighting materials produced by immune system.

• is responsible for producing hormones

• breaks down food using Enzymes

• carries hormones to target organs

​Carry blood away from the heart.
Have thick smooth muscle layer to tolerate the pressure with which blood is being pumped outside of the heart.

• ​The largest vessels are veins.

• They carry blood back to the heart.

• Skeletal muscle contraction keeps blood moving.

Capillaries are tiny thin vessels in which exchange of substances and wastes occurs.

Multiple Choice

How many blood vessel types do humans have?

• 4

• 5

• 3

• 2

Multiple Choice

The thickest and strongest blood vessel is the

• vein

• artery

• capillary

Multiple Choice

which of the blood vessels do you think have greatest blood pressure

• veins

• capillaries

• atria

• arteries

Multiple Choice

___________________carry blood back to the heart.

• Arteries
• Veins
• Capillaries

Multiple Choice

______________________are tiny thin vessels in which exchange of substances and wastes occurs.

• Veins
• Arteries
• Capillaries

Multiple Choice

__________________carry blood away from the heart.

• Capillaries
• Arteries
• Veins

Multiple Choice

The RIGHT pump of the heart pushes ___________________________________ blood to the lungs

• deoxygenated
• oxygenated
• carbonated

Multiple Choice

The LEFT pump pushes __________________ blood to the rest of the body (excluding the lungs).

• unoxygenated
• oxygenated
• deoxygenated

Multiple Choice

The word pulmonary means

• related to the lungs
• related to the heart
• related to the stomach

Multiple Choice

As the blood reaches the lungs, what is removed from the blood?

• oxygen

• carbon dioxide

• red blood cells

• white blood cells

Multiple Choice

This chamber of the heart RECEIVES blood returning from the body

• Right Atrium
• Right Ventricle
• Left Atrium
• Left Ventricle

Multiple Choice

This chamber of the heart RECEIVES oxygen rich blood back from the lungs

• Right Atrium

• Left Atrium

• Right Ventricle

• Left Ventricle

Multiple Choice

The diagram shows part of the human circulatory system. Which part carries deoxygenated blood at high pressure?

• A - Pulmonary Artery

• B - Pulmonary Vein

• C - Aorta

• D - Left Ventricle

Multiple Choice

Which vessel carries oxygenated blood from the lungs to the heart?

• Pulmonary artery

• Pulmonary vein

• Aorta

• Superior vena cava

Multiple Choice

What are the four main components of the blood?

• White blood cells, hormones, antibodies, glucose

• Plasma, red blood cells, white blood cells, platelets
• Hormones, enzymes, nutrients, waste products

​Red blood cells: Carry oxygen to the body cells

​

​White blood cells: Fight infections

​

​Plasma (liquid part of the blood): Transports glucose, fats, vitamins, minerals, hormones, and waste products between body cells.

​Platelets: Form blood clots to prevent bleeding

Multiple Choice

______________________Blood component that carry oxygen to the body cells

• White blood cells
• Platelets
• Plasma
• Red blood cells

Multiple Choice

______________________Blood component that fight infections

• White blood cells
• Platelets
• Plasma
• Red blood cells

Multiple Choice

______________________Blood component that form blood clots to prevent bleeding

• White blood cells
• Platelets
• Plasma
• Red blood cells

Multiple Choice

______________________Blood component that transports glucose, fats, vitamins, minerals, hormones, and waste products between body cells

• White blood cells
• Platelets
• Plasma
• Red blood cells