THE CIRCULATORY SYSTEM

What it does…

How it works…

Circulatory System - Objectives Understand the anatomy of the

heart and how it works Describe the pathway of blood

throughout the body and how it pertains to your health

Know and discuss the issues that people face, and the steps taken to help someone with heart problems

What does it do? Transportation

systems for the body.

Transports: Nutrients Water Oxygen

Also Carries away Waste from your body.

Waste Materials Carbon Dioxide

This system connects all of your cells to one another.

3 Parts of the Circulatory System The Heart

Has 4 chambers

Blood Broken into 4 parts

Blood Vessels 3 types

The Heart

Organ in your body

Made of Cardiac Muscle

About the size of your fist

Location: Center of your chest slightly to the left

The Heart Beats three

billion times in an average lifetime

Job: Pump blood to your body

Have to keep this healthy by Exercise Eat Healthy No Smoking

The Heart has Four Chambers Right Atrium

Where oxygen poor blood enters the heart

Right Ventricle Pumped from

here to the lungs by the pulmonary artery.

Left Atrium Blood is

obtained from the pulmonary vein and brought here

Left Ventricle Pumped from

here to all over the body

Blood Substance that is

pumped throughout the body

Travels through thousands of miles of vessels throughout your body

Carries the nutrients and waste to and from the body

A young person has about 1 gallon of blood in their body, an adult has 5 quarts

Made of many liquids, solids, oxygen, and carbon dioxide

Inside your Blood Red Blood Cells

Carry oxygen and carbon dioxide to and from cells.

Contain Hemoglobin which is where the oxygen and carbon dioxide is held

There are about 5 million red blood cells in one drop of blood.

Constantly made in bone marrow

Inside your Blood

White Blood Cells Attack,

surrounds, and destroys pathogens that enter the body.

Prevents infection Made only when

in demand

Inside Your Blood Plasma

Liquid part of the blood

Carries all the essentials to where they have to go

Made in the liver

Platelets Help us from

bleeding all the time

Attach to the opening and close it by attracting more platelets and other parts of the blood. They form what we call a scab

Blood Vessels

Three Types Arteries

Carry blood away from your heart

Veins Carry blood back

to your heart Capillaries

Connect arteries to veins and are where the nutrients are released.

Other things to know… Heart Rate (HR)

The number of times your heart contracts per minute.

Pulse The surge of blood

that results from the contractions of the heart.

Blood Pressure (BP) Systolic

The amount of pressure it takes to push the blood out of your ventricles

Diastolic The amount of

pressure it takes to push the blood out of the atriums to fill up the ventricles

How to Keep the System Healthy? Reduce the

amount of fat in your diet

Reduce the amount of salt in your diet

Exercise regularly Maintain a

healthful weight

Practice stress free management

Avoid using or inhaling tobacco products

Seek medical help for infections