Download Parts of the Circulatory System

Circulatory System Notes
__________________________ system by which ____________ and nutrients reach the
body's cells, and ________________ materials are carried away. It also carries substances
called _________________, which control body processes, and antibodies to fight invading
germs.
Parts of the Circulatory System
Divided into three major parts: __________, _________, and blood vessels.
1. The Heart
 It is a ________________ _____________ and the
size of your ___________.
 Thick muscular walls. Divided into _______ chambers
or compartments.
 Upper chambers – ___________ and _________
___________ (single=atrium) -receives blood coming IN
from the veins.
 Lower chambers – __________ and _________ _______ squeeze blood OUT into the
arteries.
 ___________ -flaps that open and close as blood moves through chambers= the heart
“sounds.”
2. The Blood
Pumped by your heart and carries nutrients, water, oxygen and waste products to and from
your body cells. Made up of liquids, solids and small amounts of oxygen and carbon dioxide.
4 Parts of Blood: red blood cells, white blood cells, platelets, and plasma.
 Red Blood Cells
Carry _______________________ from the lungs to all the cells of the body.
Take _____________________________ and transports it back to the lungs
About ___________________________ Red Blood Cells in ONE drop of blood.
 White Blood Cells
White blood cells protect the body from germs.
White blood cells attack and destroy ______________ when they enter the body.
 Platelets are blood cells that help stop bleeding.
 Plasma
The ________ part of the blood.
The plasma carries the blood cells throughout the body.
Plasma is made in the _________________.
3. The Blood Vessels
Hollow ______________ that blood travels through.
3 Kinds of Blood Vessels:
a. __________________________________________
b. _________________________________________
c. _________________________________________
 Arteries
Carry blood ______________ from the heart.
Main
artery called the ______________.
Aorta divides and branches into many smaller arteries.
Arteries carry ______________ blood- shown in red.
 Capillaries
Very ________ _________; only one cell thick
Connect _______________ to _________________.
GAS EXCHANGE HAPPENS IN THE CAPILLARIES!
Food and oxygen _______________to the body cells.
Carbon dioxide and other waste products returned to the bloodstream.
After going through capillaries, it is now _________________ and full of waste products.
 Veins
Receive blood from the capillaries;
Carry blood BACK TO the heart
Veins carry __________________ blood- shown in blue.
Why is it called the Circulatory System?
The heart, the lungs, and the blood vessels work together to form the ________________
part of the circulatory system. Heart acts as ______________ pump.
CIRCULATORY SYSTEM DIAGRAM
Blood from the right side pump is deoxygenated (oxygen-poor) and going to the LUNGS.
Blood from the left side pump is oxygenated and going to the body cells.
LABEL & SHADE your diagram (blue= deoxygenated, red= oxygenated)