1. Body Systems
Circulatory

2. Function Distribute blood to all the cells in the body.
The red blood cells carry the O2 for cellular respiration.
Then RBCs carry the CO2 produced in cells back to the lung for exhalation

3. Structure Heart muscle 4 chambers Right atria Left atria
Right ventricle
Left Ventricle

4. Flow of Blood Right atria Right ventricle Pulmonary artery Lungs
Pulmonary vein
Left atria
Left ventricle
Aorta
Body
Right atria
Pulmonary circulation
Systemic circulation

5. Heart Chambers Atria-Blood enter heart Right side Deoxygenated blood
Left side oxygenated blood
Ventricles-Blood leaves the heart
Right side lead to lungs
Left side leads to body

6. Parts of the Heart To Body To R. Lung Septum From upper body
To L. Lung
From Left Lung
From R. Lungs
Septum
From Lower body

7. Pulmonary and Systemic systems
Pulmonary system
Systemic System
Systemic System

8. Arteries Capillaries Carry blood away from the heart
Thicker because they are under pressure from the pumping of the heart.
Small
1 cell thick

9. Veins Carry blood to the heart
Thinner walls because they are not under pressure from the heart pumping.
Blood moves back to the heart through movement of the skeletal muscle.

10. Valves
Flaps of connective tissue between atria and ventricle of heart and at the exits of ventricles
Tricuspid- Between R. Atria and Ventricle
Bicuspid- Between L. Atria and ventricle
Prevents back flow of blood by maintaining one-way flow through the heart and the veins
Increases pumping efficiency of the heart

11. Pacemaker
Sinoatrial (SA) node -located in right aorta ignites and initiates contractions of Atrium.
Autorythmic cells (self exciting)
Delayed impulse carried to atrioventricular (AV) node in bottom of Atria.
AV note relays impulse via the Bundles of His to the Purkinje Fibers.
Ventricle contracts forcing blood out of the heart

12. SA and AV nodes
of His

13. Blood Component Function Red Blood Cell Contains hemoglobin.
Binds to 4 oxygen molecules.
Have no nucleus. Concave
Last 120 days
Produced by bone marrow-, ribs, humerus, femur, sternum
White blood cell
(leukocytes)
Produced in bone marrow, Have nuclei
Can travel through lymphatic system
Fights infections
Last for months to years in body
1% of blood
Platelets
Function in clotting
Produce fibrin which links together to form clot.
Plasma
Fluid portion
90% water
Contains dissolved proteins, enzymes ,gasses and waste

14. Blood Groups Group Marker on cell Antibody in Serum A A antigen Anti-B
B antigen
Anti- A AB
A antigen and B antigen
None O
Anti -A and
Anti -B
Universal Donor- O
Universal Recipient-AB

15. Rh factor(rhesus) A different marker on the cells.
If you are Rh + you have the antigen on your cells
If you are Rh- no antigen present

16. Blood pressure Force exerted on arteries as ventricles contract
Measured with sphyngmometer
Normal blood pressure for an adult:
120 = Systolic pressure = ventricles contract
Diastolic pressure ventricles relax

17. Circulatory diseases
Atherosclerosis- High blood pressure- Fatty deposits (plaque) builds up on artery walls
Heart attack- Blockage of blood vessels to the heart
Stroke- Blockage of blood vessels to the brain