AP BIOLOGY

Detailed explanation-1: -The urinary system includes the kidneys, ureters, bladder and urethra. This system filters your blood, removing waste and excess water. This waste becomes urine.

Detailed explanation-2: -Urethra. This tube allows urine to pass outside the body. The brain signals the bladder muscles to tighten, which squeezes urine out of the bladder. At the same time, the brain signals the sphincter muscles to relax to let urine exit the bladder through the urethra.

Detailed explanation-3: -The organ system responsible for removing waste from the blood is the excretory system. This system is also called the urinary system and the renal system. The four main structures of this system are the kidneys, ureters, bladder, and urethra.

Detailed explanation-4: -The principal function of the urinary system is to maintain the volume and composition of body fluids within normal limits. One aspect of this function is to rid the body of waste products that accumulate as a result of cellular metabolism, and, because of this, it is sometimes referred to as the excretory system.

Detailed explanation-5: -The urinary system is divided into two parts. The upper urinary system includes the kidneys and ureters. The lower urinary system includes the bladder and urethra. The kidneys remove waste and extra fluid from the blood to make urine.