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Atmospheric air (21% of the air you breath is oxygen) is inhaled through the mouth and into the lungs via negative pressure created in the chest cavity by accessory muscles. Once in the lungs, the air continues to travel in the airways until it reaches the tiny air-filled sacs called alveloli. Your body contains about 150 million alveoli, each of which are about one cell thick and covered with capillary blood vessels. The sheer number and thin membrane of alveoli increases surface area within the lungs, optimizing the alveolus' ability to allow gasses to diffuse through their membrane in mass quantity. Oxygen follows a concentration gradient from ambient air still in the alveoli (where it is more concentrated), through alveolar membranes into deoxygenated blood returning to your lungs via blood vessels leaving the right side of the heart. This concentration gradient is what drives oxygen into the blood plasma (the fluid component of blood). Once here, the hemoglobin in red blood cells begin to pick up the oxygen molecules from the plasma where a majority of it is ultimately stored. In fact, approximately 98% of oxygen in the blood of a healthy adult is bound to hemoglobin in this manner and is referred to as "oxygen saturation." This oxygen saturation can be measured with a device called a "pulse oximeter" that passes a light through your skin, quantifying the percentage of oxygen bound to hemoglobin. Most people in medicine consider a oxygen saturation of > 95% to be normal. BLood can sometimes become purple in this proccess.
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∙ 12y ago
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∙ 8y agoThe heart gets blood the same as any other organ gets blood. Oxygen rich blood leaving the lungs goes back to the heart and is pumped to the body organs, including the heart itself.
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∙ 11y agoThe myocardium of the heart is supplied with blood by the coronary arteries.
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∙ 8y agoThe heart gets its oxygen from the blood, just like all other tissue in the body.
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∙ 15y agoVia the left and right coronary arteries.
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∙ 10y agocoronary arteries
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∙ 11y agoconary arteries
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∙ 11y agoendocardium
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What does myocardium receive it's blood supply directly from?
The myocardium receives blood from the coronary arteries.
What is deficient blood supply to the myocardium called?
ischemia
Where is myocardial tissue?
You have three layers in the heart. Outer layer is pericardium, middle layer is myocardium and inner layer is endocardium. Myocardium is composed mainly of cardiac muscles, connective tissue and blood vessels.
If the blood supply to the myocardium stops what happens?
that part of the heart tissue dies
What can a person with type B blood receive?
a person with O+/- blood can only receive O+/- blood respectively. O+ can give blood to any other + blood type, and O- can give blood to anyone.
What does myocardium receive it's blood supply directly from?
The myocardium receives blood from the coronary arteries.
When the myocardium does not receive enough blood?
Infarction
Where does the myocardium receive its blood supply?
the coronary arteries
Where does the Myocardium receive all of its blood supply?
coronary arteries
Trace the pathway of a drop of blood from the myocardium of the heart to the arm?
The myocardium does not have blood flow to the arm. The myocardium is the muscle of the heart and therefore only supplies blood to the heart.
Which coronary artery supplies blood to the inferior myocardium?
The Right Coronary Artery supplies blood to the inferior myocardium
What layer of the heart actually pumps blood?
The myocardium (middle layer) has the bulk of the muscle which pumps blood from the ventricles.
Where does blood enter the myocardium?
Oxygenated blood is brought to the myocardium by coronary arteries. These arteries are located all around he surface of the heart.
Which provide blood to the myocardium?
Coronary arteries
Blood is supplied to the myocardium by means of the?
coronary
Myocardium is made of?
The myocardium is the middle layer of the walls of the heart, made of cardiac muscle, that contracts to push out blood.
Functions of myocardium?
pumping blood and gives morphine
