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Transcript
Cardiovascular
& Circulatory
Systems
Fun Facts!!!
 If we looked at all the blood vessels in
your body, what would the total length be?
 Around the world twice!
 How many times will
 your heart beat in a lifetime?
 3 billion!!
4
8
To lungs
to get O2
4
1
5
5
6
2
7
1
3
8
 1. Function of CV system
 Provides nutrients and oxygen through blood
 Carries away waste (CO2)
 Helps fight disease
Cardiovascular &
Circulatory System
Three Parts:
1. Heart
2. Blood Vessels
3. Blood
Structures - Heart
1.Shape- Strawberry
2.Size-Fist
3.Weight- 1 pound
4.Location- Center of
the chest
THE HEART
Heart - Structures
 1. Septum – Divides
the Heart into Right
and Left
 2. Chambers
 Atrium – Top
(smaller)
 Ventricle- Bottom
(bigger)
 3 Valves- keep blood
flowing in one
direction
RT Side- Without 0xygen
LT Side- With Oxygen
Blood Vessels
 1. Arteries (RED) -Carries
Blood Away from the Heart
 2. Veins (BLUE)- Carry Blood
Back to the Heart
 3. Capillaries -Where
exchange of nutrients takes
place (O2, Waste, Etc…)
 Blood Vessels
 http://www.youtube.com/watch?v=CjNKbL
_-cwA
 Circulationhttp://www.youtube.com/watch?v=PgI80U
e-AMo&feature=related
 Capillarieshttp://www.youtube.com/watch?v=Q530H1
WxtOw
Blood Pressure
Definition: The Force of the
Blood against the Walls of the
Arteries
120/80
Systole: Top Number of Blood
Pressure (ventricles
contracting)
Diastole: Bottom Number of
Blood Pressure (ventricles
filled w/ blood and relaxed)
Blood - Function
1.Carries food and
oxygen to all cells
2.Rid the body of
waste
Blood Components
1. Red Blood
Cells
2. White
Blood Cells
3. Platelets
4. Plasma
Red Blood Cells
1. Made in the Marrow
of Bones
2.Carry Oxygen
3.Hemoglobin
1. The Protein that
attracts O2 to the
RBC
2.Prone to
Defect/illnesses
White Blood Cells
 1.Made in the Marrow
of Bones
 2. Defend the Body
against Disease
 3. Called Leukocytes
Plasma
1.The Liquid part
of Blood (55% of
blood)
2.Mostly Water
Blood Components
Platelets
 1. Aid in the clotting of
blood
 2. How does it do
this?





Cut occurs. Platelets Activated
Platelets RUSH to the wound
Fibrin is released (Spider Web)
Web is formed over Wound
Trapped Cells Harden and
form a Scab
PLATELETS = SPIDERMAN
PLATELETS- STEP 1
 Cut occurs…. Platelets Actived!
PLATELETS – STEP 2
 Platelets RUSH to the wound!
PLATELETS- STEP 3
 Fibrin is released (Spidey Web)
PLATELETS – STEP 4
 Web is formed over Wound.
PLATELETS – STEP 5
-Trapped Cells Harden and form a Scab
SPIDEY SAVES THE DAY 
Blood Types
 A, B, AB, O
 Donor-Person who gives blood
 Recipient- Person who receives blood
 Clumping-Occurs when the blood types do
not mix
Blood Types
A, B, AB, O
Recipient
D
o
n
o
r
Mix?
A
B
* AB
O
A
Yes
No
YES
No
B
No
Yes
YES
No
AB
No
No
YES
No
*O
YES
YES
YES
YES
*O = Universal Donor
*AB =Universal Recipient
SO HOW DOES BLOOD
MOVE THROUGH THE
HEART AND BODY???
Lets see how the heart
works
 http://www.youtube.com/watch?v=mH0QT
WzU-xI
Circulation
PULMONARY- BLOOD WITH LITTLE OXYGEN IS PUMPED FROM RT SIDE OF
HEART TO LUNGS
SYSTEMIC- BLOOD RICH WITH OXYGEN IS FROM LT SIDE OF HEART TO
CELLS OF THE BODY
MYOCARDIUM- SPECIAL TYPE OF MUSCLE THAT HELPS HEART CONTRACT
RHYTHMICALLY
Superior Vena
Cava
Aorta
Pulmonary
Artery
Pulmonary Vein
RT
Atrium
LT Atrium
Tricuspid
Valve
LT
Ventricle
Bicuspid
Valve
RT Ventricle
Inferior Vena Cava
Septum
1. Blood enters through superior
and inferior vena cava
2. The blood enters the
right atrium
3. Blood passes through Tricuspid Valve
4. Blood spills into right ventricle
5. Blood enters the pulmonary
arteries.
6. From here, blood goes to
your lungs to pick up O2
7. Oxygen rich blood returns to your
heart through pulmonary veins
8. Blood enters left atrium.
9. Blood passes through Bicuspid Valve
10. Blood enters the left ventricle
11. Blood is pumped through the aorta
and delivered to rest of body.
Pathway of Blood Through
the Heart
 Any questions?
 Lets watch it again…
 http://www.youtube.com/watch?v=JA0Wb
3gc4mE