CIRCULATORY SYSTEM

the system that circulates blood and lymph through the body, consisting of the heart, blood vessels (veins and arteries),

and lymphatic vessels and glands

https://www.youtube.com/watch?v=oE8tGkP5_tc

http://kidshealth.org/kid/closet/movies/CSmovie.html?tracking=59983_C#cat20449

Heart, Arteries, Veins, and Blood Cells

Heart- Pumps blood to the rest of your body Arteries- take blood away from the heart to the body (RED)Veins- bring blood back to the heart from the body (BLUE)Red Blood Cells- Main part of blood – these cells take Oxygen from lungs and bring to bodyWhite Blood Cells- help the body fight against infection and diseasesPlatelets- help your body clot and repair itself so you won’t bleed too muchPlasma- pale yellow liquid that holds the blood cells

https://www.youtube.com/watch?v=4GUYdaM3QIY

Red and White Blood Cells Images:http://www.google.com/search?q=red+blood+cells&safe=active&es_sm=122&source=lnms&tbm=isch&sa=x&ei=5n5cvcjzlmg2oqtynoc4dq&ved=0cacq_auoaq&biw=1366&bih=643&surl=1#safe=active&tbm=isch&q=red+and+white+blood+cells

https://www.youtube.com/watch?v=xpsGsfuffEM

This is a WHITE BLOOD CELL and it’s in your blood!

White Blood cells are the cells of the immune system that help protect the body against both infectious disease and foreign invaders

https://www.youtube.com/watch?v=5LjLFrmKTSA

Red Blood Cells:http://www.google.com/search?q=red+blood+cells&safe=active&es_sm=122&source=lnms&tbm=isch&sa=x&ei=5n5cvcjzlmg2oqtynoc4dq&ved=0cacq_auoaq&biw=1366&bih=643&surl=1

5 million red blood cells will fit on the head of a pin.

Platelets life:https://www.youtube.com/watch?v=vEmsaXA-go0

The primary purpose of plasma is to transport nutrients,

hormones, and proteins to the parts of the body that need it. Cells also deposit their waste products into the plasma, and

the plasma in turn helps remove this waste from the

body. Blood plasma also ushers the movement of all the elements of blood through the

circulatory system.

• Plasma can be used to treat people who have suffered from burns, shock, trauma, and other medical emergencies.

http://www.sumanasinc.com/webcontent/animations/content/humanheart.html

• 50% of your heart’s weight is muscle

• Cardiac muscle never gets tired

• 70 beats per minute at rest• 70 milliliters of blood

pumps every minute• 4 chambers• Muscles squeeze blood

through chambers• Valves keep blood from

flowing back into heart• Heart animation: http://

kidshealth.org/teen/your_body/body_basics/heart.html#cat20121

Veins appear blue because light, penetrating the skin, is absorbed and reflected back to

the eye. Since only the higher energy wavelengths can do this, only higher energy

wavelengths are seen. And higher energy wavelengths are what we call "blue."

https://www.youtube.com/watch?v=lk0HMqwreIo

• Blood pressure is measured as systolic (sis-TOL-ik) and diastolic (di-ah-STOL-ik) pressures. "Systolic" refers to blood pressure when the heart beats while pumping blood. "Diastolic" refers to blood pressure when the heart is at rest between beats.

• Your body is very sensitive to changes in blood pressure. For example, if you stand up quickly, your blood pressure may drop for a short time. Your body adjusts your blood pressure to make sure enough blood and oxygen are flowing to your brain, kidneys, and other vital organs.

• Most forms of hypotension happen because your body can't bring blood pressure back to normal or can't do it fast enough.

• Some people have low blood pressure all the time. They have no signs or symptoms, and their low blood pressure is normal for them.

Category Systolic(top number) Diastolic

(bottom number)

Normal Less than 120 And Less than 80

Prehypertension 120–139 Or 80–89

High blood pressure

Stage 1 140–159 Or 90–99

Stage 2 160 or higher Or 100 or higher

Q: If you wear a bracelet too tight and it cuts off circulation, will your hand fall off?

A: The pressure around your wrist causes the blood to not be able to flow through your hand. Your hand will start to turn purple,

showing that oxygen-rich blood is not coming into you hand. If you notice this and take the

bracelet off, your blood will begin to flow normally and you will be fine. If the object

was on you for too long, cells would die and not be able to regrow. Then your hand would

have to be amputated. (cut off)

Q: How long do you have to be outside before frostbite sets in and your body parts start to fall off?

https://www.youtube.com/watch?v=T8zkvdkzU7A

What happens whenSomeone has a heart

Attack?

~ Types of Blood ~There are 8 different types of blood. They are given names based on having or not having “antigens”. Antigens are substances that can cause your body

to reject the new blood.•Group A – has only the A antigen on red cells (and B antibody in the plasma)•Group B – has only the B antigen on red cells (and A antibody in the plasma)•Group AB – has both A and B antigens on red cells (but neither A nor B antibody in the plasma)•Group O – has neither A nor B antigens on red cells (but both A and B antibody are in the plasma)

(+) blood types have a third antigen called the Rh factor.(-) blood types do NOT have the third antigen called the Rh factor.

Rh (+) blood has to be given to Rh (+) patientsRh (-) blood has to be given to Rh (-) patients