Because blood is liquid, its boiling point is affected by pressure changes. Extremely low pressure would lower the boiling point enough that the blood would boil at a temperature less than body temperature.
The pressure in the astronaut's suit helps to counteract the lack of atmospheric pressure in space, preventing the body from swelling due to the vacuum of space. This pressure also helps to maintain a stable environment for the body's fluids and gases, allowing the astronaut to breathe and move more comfortably in space.
Do you want to know what happens to the limb, the astronaut or the space programme?
He/she dies!
The pressure gauge on a space suit is used to monitor and maintain the correct pressure inside the suit to ensure that the astronaut is protected from the vacuum of space. It helps regulate the suit's internal environment and ensures the astronaut can breathe and move properly.
Their bodies would become very weak.
If an astronaut took off his helmet in space, his body would explode from the lack of pressure in space before other problems would become noticeable.
If an astronaut is subjected to extremely low pressures, such as in outer space without a spacesuit, the blood may start to boil due to the lack of atmospheric pressure. This can lead to gas bubbles forming in the bloodstream, potentially causing serious harm to the astronaut's circulatory system and vital organs. Immediate medical attention would be needed to prevent serious injury or death.
the astronaut heart and muscles and bones shrink and get weaker ...this because: the earth's gravitational pull is strong so the heart pumps blood harder than it needs to in space so when a astronaut is in orbit it doesn't need to work so hard so they shrink. hope this helps.
BLAH
Blood vessels. Constriction of blood vessels increases blood pressure by reducing the space for blood flow, while dilation of blood vessels decreases blood pressure by increasing the space for blood flow.
the blood is always red . The red colour of the blood is caused by an iron compound hemoglobin. neither in earth nor in space hemoglobin could suddenly turn blue so the blood of the bleeding astronaut will always be red
They would quickly die of asphyxiation due to the lack of air and the astronauts blood would boil because there is very little pressure in space so this would lower the boiling point of your blood causing it to boil quicker at a lower temperature this would also contribute to killing the astronaut.