1. Urinary System: Answer -Kidneys -Ureters -Bladder -Urethra 2. Functions of Kidney and Ureters: Answer -Maintain Composition and Volume of BodyFluids (homestatic) -Filter in or Excrete out blood constituents as needed -***Filtered at Nephrons (nephrons filter urine in kidneys) -Excrete waste (urine) 3. Functions of Bladder: Answer • Smooth muscle sac • Serves as a reservoir for urine • Composed of 3 layers of muscle tissue called Detrusor muscle • Sphincter guards opening between urinary bladder and urethra • Urethra conveys urine from bladder to exterior of body 4. Functions of Urethra: Answer • Male urethra functions in excretory and reproductivesystems • No portion of female urethra is external to the body 5. Micturition (urination): Answer •Process of emptying the bladder -Detrusor muscle contracts, internalsphincter relaxes, urine enters posterior urethra