THE CIRCULATORY SYSTEM THE THREE COMPONENTS THAT MAKE

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THE CIRCULATORY SYSTEM THE THREE COMPONENTS THAT MAKE UP THE HUMAN CIRCULATORY SYSTEM

THE CIRCULATORY SYSTEM THE THREE COMPONENTS THAT MAKE UP THE HUMAN CIRCULATORY SYSTEM

What makes up the circulatory system?

What makes up the circulatory system?

The 3 components are: THE HEART THE BLOOD VESSELS THE BLOOD

The 3 components are: THE HEART THE BLOOD VESSELS THE BLOOD

The Function of the Circulatory System To deliver oxygen and nutrients to the entire

The Function of the Circulatory System To deliver oxygen and nutrients to the entire body. Transportation system to remove waste products from the body.

Components of the circulatory system

Components of the circulatory system

Blood • Over half of our blood is Plasma: which carries hormones, nutrients and

Blood • Over half of our blood is Plasma: which carries hormones, nutrients and waste products. • Red Blood cells: primary job is to carry oxygen throughout the body • White blood cells: help fight infection and foreign invaders • Platelets: a solid in the blood that helps with blood clotting

Blood vessels • Are tubes that form a network to carry blood all throughout

Blood vessels • Are tubes that form a network to carry blood all throughout the body • Arteries: Carry oxygen rich blood away from the heart and to the rest of the body • Veins: Carry oxygen depleted blood back to the heart • Capillaries: tiny blood vessels are the sites where nutrients, oxygen and waste materials are exchanged between blood and body cells

Blood vessels Arteries are thick walled and can handle higher pressure than veins. Veins

Blood vessels Arteries are thick walled and can handle higher pressure than veins. Veins are thin walled vessels with low pressure.

Artery/vein ultrasound Ultrasound of an artery and vein

Artery/vein ultrasound Ultrasound of an artery and vein

Capillaries

Capillaries

Heart • Continually beating pumping blood throughout the body and into the lungs where

Heart • Continually beating pumping blood throughout the body and into the lungs where blood picks up oxygen • The heart is a muscle about the size of your fist and sits behind the sternum (breastbone) • Heart beats on average 60 -80 times per minute at rest • The heart is the center of the circulatory system

Is the heart muscle the same as all our other muscles? For example, our

Is the heart muscle the same as all our other muscles? For example, our bicep muscle in the arm?

Let’s get to work! • Squeeze the ball for 60 seconds • Count how

Let’s get to work! • Squeeze the ball for 60 seconds • Count how many times you squeezed the ball in that 60 second time frame

Observations

Observations

Heart as a muscle • Do muscles fatigue? • Did your arm and hand

Heart as a muscle • Do muscles fatigue? • Did your arm and hand muscles get tired? • How many times does the heart beat on average per minute? • The heart muscle is made up of unique cardiac muscle fibers that are not likely to fatigue

Common problems affecting the circulatory system

Common problems affecting the circulatory system

List a few problems of the circulatory system • High blood pressure (Hypertension) •

List a few problems of the circulatory system • High blood pressure (Hypertension) • Anemia • Atherosclerosis • Heart Attack