At Westonci.ca, we provide clear, reliable answers to all your questions. Join our vibrant community and get the solutions you need. Discover the answers you need from a community of experts ready to help you with their knowledge and experience in various fields. Get immediate and reliable solutions to your questions from a community of experienced professionals on our platform.

Which of the following cardiovascular problems do a majority of astronauts experience on return to Earth from spaceflight?
A. Reduction in arterial pressure and decreased brain perfusion during orthostasis
B. Increase in arterial pressure and decreased brain perfusion during orthostasis
C. Reduction in arterial pressure and increased brain perfusion during orthostasis
D. Increase in arterial pressure and increased brain perfusion during orthostasis