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T or F: Phase one of the heart takes blood from the lungs to the heart and then back to the heart.
You are located in your foot. Travel to and through the right side of your heart, and pick up oxygen.
Foot, Vein, Inferior Vena Cava, Right Atrium, Tricuspid Valve, Right Ventricle, Pulmonary Valve, Pulmonary Artery, Lungs
4 functions of the circulatory system
Carries little oxygen away from cells, Carries needed substances to cells, fights diseases, Takes away wastes
How is the heart protected?
The sternum and ribs form a cage around the heart protecting it from damage
Whats the difference between these two chambers?
The right atrium has oxygen poor blood and the left atrium has oxygen rich blood
Where does the blood come from in the upper right chamber? What blood vessels put blood into these chambers?
Upper Body. Superior Vena Cava, Inferior Vena Cava
Whats the difference between the lower chambers?
The right ventricle has oxygen poor blood, left ventricle has oxygen rich blood. The left ventricle puts more force than the right ventricle because it pumps blood through the body.
What artery layer acts as an control gate?
muscle layer. It relaxes to organs that need a lot of blood and contracts to organs that need little
Why should you not exercise vigorously shortly after eating?
After you eat, your digestive system needs more blood. If you exercise vigorously, more blood flows to the skeletal muscles, which means your food may not be digested properly.
Name the three factors that enable flodd to return to your heart?
Contraction of skeletal muscles, Larger veins have valves, Breathing pressure
What instruments measure bp? How is it measured? How is it expressed?
sphygmomonameter and stethoscope. A cuff is wrapped around the upper arm air is pumped until blood flow in the artery is cut off then releases listens to the pulse and records two numbers. In mm as a fraction a healthy bp is 120/80 or lower.
a condition in which an artery wall thickens as the result of the build up of fatty materials
What are the effects of hypertension?
makes heart work harder to pump blood, damages the walls of blood vessels
3 ways to maintain CV health
Exercise regularly, eat a balanced diet low in saturated/trans fat, sodium, and cholesterol, and avoid smoking
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