Cardiovascular System Notes

1. Cardiovascular System

2. 1. Functions of blood
•transports oxygen
•transports nutrients
•transports waste materials
to the lungs and kidneys
•regulates body
temperature
•fights disease

3. 2. Parts of blood
•rbc’s: carry oxygen using
hemoglobin, a protein
that contains iron
•wbc’s: fight infection by
finding and killing
pathogens
•platelets: cell fragments
that cause blood to clot
•plasma: liquid part of
blood
red blood cell
white blood cell

4. 3. Parts of the heart
• see worksheet

5. 4. Blood flow through the heart and body
right
atrium
right
ventricle
pulmonary
artery
lungs
pulmonary
veins
left
atrium
left
ventricle
aorta
smaller
arteries
capillaries
small
veins
larger
veins
right
atrium

6. 5. Two Types of Circulation
•Pulmonary circulation:
blood flows from the
heart to the lungs and
back
•Systemic circulation:
blood flows from the
heart to the rest of the
body and back

7. 6. Comparing arteries, veins, & capillaries
Function
Pressure
Valves
Thickness
of Walls
Direction
of Flow
CapillaryVeinArtery
Type of
Blood Vessel
Away from
Thick
No
High
Distributes
blood,
carries O
2
and nutrients
Towards
Thin
Yes
Low
Returns blood,
carries CO
2
and other
wastes
Both
Very thin
No
Low
Exchanges O
2
and
nutrients with
cells, picks up
CO
2
and wastes

8. What color is blood?
•http://en.wikipedia.org/wiki/Blood
•http://www.madsci.org/posts/archives/apr2001/987619789.Gb.q.html