how would blood flow in man when he is in space?
475696
blood doesn't need gravity to flow through your body.  The heart pumps it and the veins and arteries have valves which keep it going in the correct direction (ie no back flow).
11899
Venturing a guess here:\n\nCholesterol hardens you veins, and birds, due to the energy requirements of flight, need incredibly high blood pressure.  Bird lungs have a seperate entrance and exit, unlike mammalian lungs where CO2 goes out the same way O2 comes in.  The higher effeciency is necessary to power the large pectoral muscles.  I'd imagine that if there oxygen demands were that high, they'd need some strong blood vessels to carry their blood at high pressure.
986287
Walking, or any other form of non-airborne locomotion - you'd have to swim through the air\n\nCooking would be a bit complicated, everything would have to be contained. And forget a bowl of cereal.  Solid food would have to be in chunks, liquids in a pouch.\n\nCleaning up afterwards would be tough - how do you keep the hot soapy water in the sink?\n\nThink of all the things that would have to be restained from floating around as you go about your daily business.\n\nSleeping might be a bit more comfortable though, as long as you're tethered so you don't bump into walls all night long.\n\nAll in all, it would be similiar to life aboard a non-rotating space station.
829141
Higher partial pressure of O2 in atmosphere that that present in the blood.\n\nRemember, blood in the lungs will be DEOXYGENATED!
1009759
Increased blood flow...?
1109029
sending a probe to mars\n\nadvanced techniques in heart surgery
539604
as you move your muscles, they burn oxygen...blod flow increases to muscled to replace this lost oxygen...
619312
it goes into your lungs and then straight into your blood stream from there.  how do you think oxygen gets in your blood??
983290
yeah, i'm pretty sure that they need blood to survive, lol. how would oxygenated blood flow through their body?
395359
oxygen molecule in lungs diffuses into the blood stream return to the heart via the pulmonary vein (the only vein to carry oxygenated blood) into the left atrium, left ventricle, through the aortic semilunar valve, through the ascending aorta, arch of the aorta, descending aorta, common illiac artery, external illiac artery, femoral artery... from there it  depends where in the hind leg... by the way these are human names, I don't know how many would be different for animals... my comparative anatomy teacher used to make us do these kinds of questions all the time ;-)
148737
Contrary to the above answers, you could smell in space. However you would need a really strong smell to do so. \n\nUs humans need to draw large amounts of the air that  contains an odour through our nose in order to be able to detectit. Space of course contains no air, so to be able to smell anyhting in space the odour itself would need ot be very concentrated.\n\nBut certainly if I opened a bottle of ammonia 3 inches under your nose in space you would smell it just fine.\n\n>>>>>But in space, there is no atmosphere for them to\n>>>>> disperse in, so there is no way for the "smelly"\n>>>>> particles to diffuse to your nose.\n\nUnless the gravity is EXTREMELY dense , the smell is EXTREMELY faint or the the conditions are EXTREMELY cold those molecules will diffuse faster in space thanon Earth.\n\nAs they are liberated from the source they must have achieved vapourisation temperature. Therefore they already have significant velocity. The odour molecules will be colliding with each other and undergoing all the normal interactions. As they disperse more the velocity will remin unaltered but the movement will become linear rather than random brownian movement as they cease to interact. But that would only make the dispersion faster, not slower.\n\nIf you don't believe me consider this. If you placed a bowl of water on the surface of the moon what would happen?  If lack of an atmoosphere stops volatile molecules from dispersing how does the water evaporate in space? Now what would happen if you placed a small amount of ammonia in that water? If the ammonia molecules are dispersing far enough to allow evaporation then why would they not disperse further?\n\nFor all those who said that you can not smell in space this is the critical quetsion to answer. If you accept that ammonia, chlorine and other odoriferous materials can evaporate in space why dont you also believe they are capable of diffusing?\n\nAnd if you believe they are capable of diffusing why do you believe the ofactory glands couldn't react to them?\n\nAnd if you believe the olfactory glands could react to them wwhy do you believe that the neurons couldn't pass that to the brain?\n_______\n>>>>>This answer more pretains to solid 'smell' particles\n>>>>> rather than 'smelly' gasses.\n\nI'm not quite sure what that means. The only 'solid smell particles' are things like smoke. I'd guess that 99.9% of the odours humans detect are gaseous: perfume, ammonia, body adour, food and so sorth. All are caused by volatile materials, ie they exist as gas when we smell them.\n\nYou are correct that the tiny number of odours actually caused suspended solid particles could not travel readily in a vacuum. But most odours would travel further and faster in a vacuum.
242914
more than the magnitude of g-force the direction of g-force on our body matters;\nthe force the blood flows in our brain is very small but constant exposiure to a g-force of 10.2 or 10.3 the blood in our body stops flowing to the upper parts of the body (if we are lieing along anti parallel to the field of the gravitational field)blood stops flowing to aorta and vien and  of our upper body increasing the risk of paralysis,loss of senses and eventually death.
758386
Assuming there is oxygen present, in any direction. Most likely the direction which presents the input of oxygen i believe. Some great pictures on the NASA website linked below. There have been some controlled experiments for combustion done on Space Shuttles.
1174898
Not all the time, but a fair amount.  While in space, your muscles will begin to deteriorate and weaken.  This isn't a big problem while you're actually in space, but when you return to Earth's gravity, you'd be flopping around like a fish.  To prevent this, astronauts follow a strict physical fitness regiment to preserve their muscle quality.  They also only stay in space for a short amount of time (few months to a year tops) to prevent any permanent physical damage.
246088
ja :)..all objects with mass experience gravitational forces; about it's effects I don't know many, but the varicous veins for example are due to gravity in a way:blood doesn't flow up easily and gets stuck in his way and those are formed; also astronautes experience space motion sickness, when they are out the earth ( headache , nausea and even vomiting..yucky)...that's because our vestibular system is govern by the motion of liquid ,and when there is no gravity it originates changes.\nif you mean: humans ¨excert¨ gravitational forces by your question..I would say due to our little mass compared to the earth it means nothing (..unless you are really really fat! :P)
724851
Blood plasma, red blood cells, white blood cells, platelets, and numerous nutrients that are being delivered to various parts of your body.  \n\nStructurally speaking, the circulatory system is a complex set of arteries drawing blood away from your lungs and to every part of your body (including the brain and heart muscle), veins drawing blood toward your lungs, the heart that pumps to keep blood moving, and capillaries that drop of oxygen to cell tissue in exchange for carbon dioxide.
76097
blood, fluid pumped by the heart that circulates throughout the body via the arteries, veins, and capillaries (see circulatory system; heart). An adult male of average size normally has about 6 quarts (5.6 liters) of blood. The blood carries oxygen and nutrients to the body tissues and removes carbon dioxide and other wastes. The colorless fluid of the blood, or plasma, carries the red and white blood cells, platelets, waste products, and various other cells and substances