Functions
What does the circulatory system circulate throughout the body?
what is blood.
Hypertension commonly called ___ _____ _______ causes the heart to work harder and can lead to such complications as a heart attack, a stroke, or kidney failure.
what is high blood pressure.
The circulatory system is a vast network of ______ and ________ through the body.
What is organs and vessels?
The ______ carry oxygen-rich blood away from the heart and where it needs to go.
what is Arteries.
the heart is a _______ organ that is around the size of a closed fist.
what is muscular organ.
The heart is made up of _____ independent systems that work together.
What is three, the heart (cardiovascular); lungs (pulmonary); and arteries, veins, coronary and portal vessels (systemic)
Cardiac ischemia means the heart muscle is not getting enough ______ to function properly. A person with cardiac ischemia will usually experience angina-like pain and may feel as though they are having a heart attack.
what is oxygen.
what is the most notable organ in the circulatory system?
what is the heart?
_____ carry oxygen-poor blood back from the body to the heart.
what is veins.
It carries deoxygenated blood to the lungs where it loads up with oxygen and unloads _____ _____.
What is carbon dioxide.
There are around ______ miles of blood vessels.
What is 69,000.
____ __________ is usually caused by a sedentary lifestyle and an unhealthful diet. Some people can also be genetically at risk of ____ __________.
what is high cholesterol.
true or false: Is the pulmonary circulation loop part of the circulatory system?
True: The pulmonary circulation loop is the portion of the circulatory system which carries deoxygenated blood away from the right ventricle of the heart, to the lungs, and returns oxygenated blood to the left atrium and ventricle of the heart.
Which is bigger, veins or arteries?
what is veins: Veins are generally larger in diameter, carry more blood volume and have thinner walls in proportion to their lumen. Arteries are smaller, have thicker walls in proportion to their lumen and carry blood under higher pressure than veins.
The heart has four _____ that help ensure that blood only flows in one direction:
what are valves.
True or false: The circulatory system is also called the vascular system.
True
A _____ can happen when one of the vessels that lead to the brain either becomes blocked by a blood clot or bursts. This stops blood flow and prevents oxygen from getting to the brain.
what is a stroke.
At each body part, a network of tiny blood vessels called _______ connects the very small artery branches to very small veins
what are capillaries.
What can cause a vein to break?
Blood clots can cause veins to be large and fragile. Vessel inflammation can also cause this. There is also a condition known as varicose veins where the veins are weak and therefore swell, especially in the feet. This is unlikely a problem with exercise--unless you are doing very traumatic exercise to your feet.
To pump blood throughout the body, the muscles of the heart must be coordinated perfectly — squeezing the blood in the right direction, at the right time, at the right pressure. The heart's activity is coordinated by _______ impulses.
what are electrical impulses.