Cardiovascular Cardiovascular

» “Cardio-” = heart» “-vascular” = vessel

» “Cardio-” = heart» “-vascular” = vessel

FunctionFunction» Transport materials needed by

cells» Oxygen» Glucose

» Remove waste materials from cells» Carbon dioxide» urea

» Pump (heart) » Continuously circulates blood

» Transport materials needed by cells» Oxygen» Glucose

» Remove waste materials from cells» Carbon dioxide» urea

» Pump (heart) » Continuously circulates blood

The HeartThe Blood

The Blood Vessels

The HeartThe Blood

The Blood Vessels

Major ComponentsMajor Components

THE HEARTTHE HEART• The heart is the most vital organ

in the circulatory system. • About the size of your fist.• It is made up of four main parts

called chambers.• Left and right ventricle• Left and right atrium

• The heart is the most vital organ in the circulatory system.

• About the size of your fist.• It is made up of four main parts

called chambers.• Left and right ventricle• Left and right atrium

• The blood vessels provide the pathway in which blood travels.

• There are three types of blood vessels:• Arteries- direct blood away from heart.• Capillaries-very thin! Allow nutrients,

oxygen to diffuses easily through capillary walls.

• Veins- blood vessels that direct blood back to the heart.

• The blood vessels provide the pathway in which blood travels.

• There are three types of blood vessels:• Arteries- direct blood away from heart.• Capillaries-very thin! Allow nutrients,

oxygen to diffuses easily through capillary walls.

• Veins- blood vessels that direct blood back to the heart.

THE BLOOD VESSELSTHE BLOOD VESSELS

THE BLOODTHE BLOOD» Platelets

» Clump together in damaged area of skin to help reduce blood loss.

» Red Blood Cells » carries hemoglobin (Gives cells their red color)» Hemoglobin clings to oxygen and transports it through the

body.

» Blue Blood Cells » carries waste

» White Blood Cells » Release antibodies that destroy pathogens and clean wounds

» Platelets» Clump together in damaged area of skin to help reduce

blood loss.

» Red Blood Cells » carries hemoglobin (Gives cells their red color)» Hemoglobin clings to oxygen and transports it through the

body.

» Blue Blood Cells » carries waste

» White Blood Cells » Release antibodies that destroy pathogens and clean wounds

Mmmm….Blood!!!Mmmm….Blood!!!

How everything works together…

How everything works together…

» Your blood carries oxygen & nutrients to all the cells in your body.

» It also carries away the waste products like carbon dioxide.

» The left side of the heart pumps oxygenated blood to the body.

» The right side of the heart pumps deoxygenated blood to the lungs where oxygen can be absorbed by the hemoglobin carrying red blood cells.

» Your blood carries oxygen & nutrients to all the cells in your body.

» It also carries away the waste products like carbon dioxide.

» The left side of the heart pumps oxygenated blood to the body.

» The right side of the heart pumps deoxygenated blood to the lungs where oxygen can be absorbed by the hemoglobin carrying red blood cells.

Movie time!Movie time!

What is Blood Pressure?

What is Blood Pressure?

» Is a measure of the force exerted by the blood on the wall of the arteries.» An example is 120/80 (systolic

pressure/diastolic pressure.»Systolic pressure is the result of the

contraction of the ventricles (normal 110-140)»Diastolic pressure is during the ventricle

relaxation (normal 70-90)

» Is a measure of the force exerted by the blood on the wall of the arteries.» An example is 120/80 (systolic

pressure/diastolic pressure.»Systolic pressure is the result of the

contraction of the ventricles (normal 110-140)»Diastolic pressure is during the ventricle

relaxation (normal 70-90)

funny youtube blood pressure movie

Blood Pressure MovieBlood Pressure Movie

Be good to your heart!Be good to your heart!

The EndThe End