Circulatory System

The Circulatory System

Carrying blood around the body

Humans are made of cells.

​

• Like all organisms, humans are made of cells.

• A group of cells is called a tissue.

• A group of tissues is called an organ.

• A group of organs is called an organ system.

• A group of organ systems is called an organism.

• The organ systems work together to keep the organism alive.

• We will learn about 7 human organ systems.

Reorder

Put these in order from simplest (1) to most complex (5)

• Cell

• Tissue

• Organ

• Organ System

• Organism

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Match

Match the diagram to its name.

Cell

Tissue

Organ

Organ System

Organism

• Cell

• Tissue

• Organ

• Organ System

• Organism

Reorder

Put these in order from simplest (1) to most complex (5).

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Match

Match the system diagram to its name.

Circulatory System

Digestive System

Respiratory System

• Circulatory System

• Digestive System

• Respiratory System

Match

Match the system diagram to its function.

Carries blood around the body

Turns food into fuel

Absorbs O₂ and releases CO₂

• Carries blood around the body

• Turns food into fuel

• Absorbs O₂ and releases CO₂

Match

Match the system name to its function.

• Circulatory System

• Digestive System

• Respiratory System

Carries blood around the body

Turns food into fuel

Absorbs O₂ and releases CO₂

• Carries blood around the body

• Turns food into fuel

• Absorbs O₂ and releases CO₂

Circulatory System

​

• Circulate is a verb that means to travel around.

• So, the Circulatory System lets blood travel around the body.

• The goal of the circulatory system is to carry oxygen to every cell in the body.

• If a cell does not receive oxygen from the circulatory system, it will die.

Multiple Choice

What does circulate mean?

• To stop moving completely.
• To travel around.

• To draw a circle.

• To move in a straight line.

Multiple Choice

Which system lets the blood travel around the body?

• Nervous system
• Respiratory system
• Digestive system
• Circulatory system

Multiple Choice

The goal of the circulatory system is to carry ___ to every cell in the body.

• oxygen

• waste

• carbon dioxide

• germs

Multiple Choice

What will happen to a cell that does not receive oxygen from the blood?

• The cell will die.

• The cell will make its own oxygen.

• The cell will survive without oxygen.

The Heart

​

• The Heart, which is an organ, contracts to pump the blood.

• Blood with no oxygen travels from the heart to the lungs.

• The lungs fill the blood with oxygen, and then the blood travels back to the heart.

• Blood with oxygen travels from the heart to the rest of the body.

• The blood drops off the oxygen at the cells, and then travels back to the heart.

• Then the cycle starts again!

Reorder

Sequence these steps of circulation.

• START: Blood with no oxygen travels from the heart to the lungs.

• The lungs fill the blood with oxygen, and it travels back to the heart.

• Blood with oxygen travels from the heart to the rest of the body.

• The blood drops off the oxygen at the cells and then travels back to the heart.

• The blood with no oxygen reaches the heart, and the cycle starts again!

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Multiple Choice

Which body part pumps the blood?

• The Heart

• The Lungs

• The Cells

Multiple Choice

Which body part fills the blood with oxygen?

• The Heart

• The Lungs

• The Cells

Multiple Choice

Which body part takes the oxygen from the blood?

• The Heart

• The Lungs

• The Cells

Multiple Choice

What type of body part is the heart?

• Cell

• Tissue

• Organ

• Organ System

• Organism

Multiple Choice

Which picture shows a human heart?

Labeling

Label the parts of the Circulatory System.

Drag labels to their correct position on the image

Lungs

Heart

Blood Vessels

​

• Blood Vessels include arteries, capillaries, and veins.

• Arteries travel AWAY from the heart.

• They are shown in red, because the blood they carry is full of oxygen.

• Capillaries bring blood to the cells.

• They are shown in red and blue, because the blood in the capillaries drops off its oxygen.

• Veins travel BACK to the heart.

• They are shown in blue, because the blood they carry has no oxygen.

Dropdown

Arteries carry blood ​

Select answer

the heart.

Veins carry blood ​

Select answer

the heart.

Dropdown

​

Select answer

carry blood ​ away from the heart.

​

Select answer

carry blood ​back to the heart.

Dropdown

Arteries are shown in ​

Select answer

because they are ​

Select answer

.

Veins are shown in ​

Select answer

because they are ​

Select answer

.

Multiple Choice

Which blood vessels carry blood away from the heart?

• Arteries
• Veins
• Capillaries

Multiple Choice

Which blood vessels carry blood to the cells?

• Arteries
• Veins
• Capillaries

Multiple Choice

Which blood vessels carry blood back to the heart?

• Arteries
• Veins
• Capillaries

Multiple Choice

Blood in the arteries is ___.

• Full of oxygen

• Empty of oxygen

• Dropping off its oxygen

Multiple Choice

Blood in the capillaries is ___.

• Full of oxygen

• Empty of oxygen

• Dropping off its oxygen

Multiple Choice

Blood in the veins is ___.

• Full of oxygen

• Empty of oxygen

• Dropping off its oxygen

Labeling

Label the parts of the Circulatory System.

Drag labels to their correct position on the image

Veins

Capillaries

Lungs

Heart

Arteries

Match

Match the part to its job.

• Artery

• Capillary

• Vein

• Heart

• Lungs

Transports blood away from the heart

Carries blood to the cells

Transports blood back to the heart

Pumps the blood

Provides oxygen to the blood

• Transports blood away from the heart

• Carries blood to the cells

• Transports blood back to the heart

• Pumps the blood

• Provides oxygen to the blood

Blood Cells

• Blood is made of 4 parts:

  • Red Blood Cells - carry oxygen

  • White Blood Cells - fight germs

  • Platelets - help the body stop bleeding by forming clots

  • Plasma - a liquid that carries the blood cells

• Since blood is made of cells, blood is a tissue.

Multiple Choice

Blood is made of cells. So blood is a ___.

• Tissue

• Organ

• Organ System

• Organism

Match

Match the blood cell to its function.

• Red Blood Cells

• White Blood Cells

• Platelets

• Plasma

Carry Oxygen

Fight Germs

Help the body stop bleeding

Carry the blood cells

• Carry Oxygen

• Fight Germs

• Help the body stop bleeding

• Carry the blood cells

Pulse

• When your heart beats, your blood is pumped around your body.

• The number of times your heart beats in 1 minute is called your pulse.

• Doctors measure your pulse to make sure your heart is not beating too fast or too slow.

• You can check your pulse on your wrist or neck.

• When sitting still, most humans have a pulse between 60 and 100 beats per minute.

• When you exercise, your pulse increases to help your cells get more oxygen.

Multiple Choice

The number of times your heart beats in one minute is called your ___.

• pulse

• cholesterol level
• blood pressure
• respiratory rate

Multiple Select

Two places you can check your pulse are ___.

(Pick 2!)

• Wrist

• Neck

• Eyeballs

• Pinky Finger

• Knees

Multiple Choice

Pulse is measured in ___.

• Beats per minute

• Beats per hour

• Beats per second

Multiple Choice

When sitting still, most people have a pulse between ___.

• 60 and 100 beats per minute

• 150 and 200 beats per minute

• 5 and 10 beats per minute

Multiple Select

When would you expect your pulse to increase?

(Pick 2!)

• You are running to catch the van.

• You are sitting quietly and taking notes.

• You are sleeping in bed.

• You are playing soccer with your friends.

Circulatory System Review

​

• The Heart contracts to pump the blood.

• Blood with no oxygen travels from the heart to the lungs.

• The lungs fill the red blood cells with oxygen, and then the blood travels back to the heart.

• Blood with oxygen travels from the heart to the rest of the body through the arteries.

• The blood drops off the oxygen at the cells through the capillaries.

• The blood with no oxygen travels back to the heart through the veins.

• Then the cycle starts again!

Match

Match the part to its job.

• Artery

• Capillary

• Vein

• Heart

• Lungs

Transports blood away from the heart

Carries blood to the cells

Transports blood back to the heart

Pumps the blood

Provides oxygen to the blood

• Transports blood away from the heart

• Carries blood to the cells

• Transports blood back to the heart

• Pumps the blood

• Provides oxygen to the blood

Labeling

Label the parts of the Circulatory System.

Drag labels to their correct position on the image

Capillaries

Heart

Arteries

Veins

Lungs

Reorder

Sequence these steps of circulation.

• START: Blood with no oxygen travels from the heart to the lungs.

• The lungs fill the blood with oxygen, and it travels back to the heart.

• Blood with oxygen travels from the heart to the rest of the body.

• The blood drops off the oxygen at the cells and then travels back to the heart.

• The blood with no oxygen reaches the heart, and the cycle starts again!

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Open Ended

Describe the steps of the Circulatory System, starting with,

"First, blood with no oxygen leaves the heart."