Arrector pili muscle is the one with hair follicles that has a smooth muscle which is in an unconscious control rather than conscious control. This pull up the follicle causing the goose bumps then. Hope this is the right answer and will be of big help then.
The answer is true. The kidneys help filter and remove extra waste and extra water that turns into urine. The urine flows from the kidneys to the bladder through tubes called ureters. The bladder stores the urine until urination occurs.
You get tired when you run because our leg muscles don't get enough oxygen anymore.
