No it will not.
Blood leaving the lungs is oxygenated
at altitude amount of red blood cells increases . [fatima]
The blood leaving the lungs is loaded with oxygen, while blood entering the lungs is about to get oxygen from the respiratory system.
No.
veins and blood vessels
Waste and deoxygenated blood
the sodium ion and chloride remain dissociated in the blood is around 10%
Increase of altitude does affect blood pressure, but not by much. And your body will adapt over time. For example, people at higher altitudes produce more red blood cells to carry oxygen. If you have cronic hypertention or you are on meds for high blood pressue you should probably talk to your doctor before going to an altitude of over 4000 feet.
No, but the blood leaving is.
if blood entering the heart gets mixed with blood leaving the heart the the blood leaving the heart will get poluted. the blood entering the heart is poluted when it enters the heart, the heart cleans it up; so when the blood leaves the heart it is clean so if it gets polluted the person may get sick and this leads to his/her death.
Blood entering the kidneys has more water; the water is extracted by the kidneys and sent through the ureter to the bladder.
vasoconstriction of the pulmonary blood vessels