The organ that receives reduced flow of blood during vigorous exercise is the

The organ that receives reduced flow of blood during vigorous exercise is the brain. During exercise, the body needs more oxygen and nutrients to produce energy, which requires an increase in blood flow to the muscles. To meet this demand, blood vessels in the muscles dilate, and blood is redirected away from other organs, including the brain. This is known as the "fight or flight" response, and it allows the body to prioritize the delivery of oxygen and nutrients to the muscles that need it most. While the brain does require a lot of oxygen and nutrients, it is able to maintain function with a reduced flow of blood for short periods of time during vigorous exercise.