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Questions tagged [blood-circulation]

Tag for questions regarding the circulation of blood through out the organism and issues that may arise from dysfunction of systemic circulation.

Systemic Circulation (Blood Circulation)

Systemic circulation is the part of the cardiovascular system which carries oxygenated blood away from the heart to the body, and returns deoxygenated blood back to the heart.

About Circulation of the Blood

The systemic circulation provides the functional blood supply to all body tissue. It carries oxygen and nutrients to the cells and picks up carbon dioxide and waste products.

Systemic circulation carries oxygenated blood from the left ventricle, through the arteries, to the capillaries in the tissues of the body. From the tissue capillaries, the deoxygenated blood returns through a system of veins to the right atrium of the heart.

NIH - National Cancer Institute

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Why don't we bleed interstitial fluid?

Interstitial fluid is the fluid between cells in tissues - forming the medium between cells and capillaries. From what I gather, the typical human has 5L of blood and 11L of interstitial fluid. This raises an interesting question. If I get cut, why…
John Hon
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Is there any justification for the claim that blood travels 12,000 miles per day?

An oft-quoted "fact" on the internet1,2,3 (and at least once in print4) is the claim: Your body has about 5.6 liters (6 quarts) of blood. This 5.6 liters of blood circulates through the body three times every minute. In one day, the blood travels a…
TripeHound
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Blood circulation - How to expand blood capillaries?

Do blood capillaries expand? If yes, through what means can it be done? And can warm water also be used to expand blood capillaries?
paul
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Do body lotions enter into bloodstream of people? And how do they do it?

I found this very disturbing: bombastic tabloid-style writing in capital and the content is doubtful. If it was correct or close "does it really take something like 26 seconds for a body lotion to enter into bloodstream?", you select a lotion…
hhh
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How superficial an artery has to be for pulse to be measured manually?

Why arteries pulse? How superficial an artery has to be for pulse to be measured manually?
euj
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Where is coagulation factor v produced?

My textbook (Physiology 9th edition, People's Medical Publishing House, Beijing) tells me that coagulation factor V is produced in endothelial cells and platelets, which is different from some other books (saying in liver). So where exactly is it…
Jiakai Jiang
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"Blood circulation". Why blood bleeds in atmosphere ?

If our body's blood pressure is 120 mm-Hg then why blood goes out of our body in 760 mm -Hg pressure if we have cuts?
user43680
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How much arteries expand during systole?

Arteries expand during systole. By what percentage, on an average, does the arteries' diameter change during systole with respect to diastole? Answer may depend upon type of artery i.e. elastic artery, muscular artery, arterioles etc, you may…
Rfvbgttredfv
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Elastic arteries and muscular arteries supplying to upper body

What are the elastic arteries and muscular arteries supplying blood to upper body (above heart) in humans?
yjb
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Cutting off circulation

How much force is required to cut off the blood circulation of, lets say the average human arm? I'm asking because i'm bored and want to try it on myself. I know that in just a couple of seconds with lack of blood flow you will lose complete use of…
The seven paths of pain
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What would happen if blood flow wasn't periodic?

Blood pressure has its systolic and diastolic parts due to the beating heart and the body's used to that kind of thing. What would happen to a person supported by a blood-pumping machine that applies steady blood pressure? What would happen short…
Loogai
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Is there a closed path through the circulatory system that never passes through the liver?

I know the liver is responsible for doing lots of stuff to the blood, including both adding glucose and removing "weird stuff" (stuff destroyed by hepatocytes). And I know that statistically every volume element of blood will eventually pass…
Ross Presser
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