True. There is a external and internal sphincter
The urethral sphincter is broken down into two separate muscles, the internal and external sphincter muscles of the urethra. The internal muscle is located where the urethra joins the bladder. It is under involuntary control and works by balancing the sympathetic (keeping closed) and parasympathetic (opening) nervous systems. The second muscle is located just after the prostate gland. It is under voluntary control and works by the somatic nervous system.
The Urinary System extracts waste from your body. The organs, tubes, muscles, and nerves that work together to create, store, and carry urine are the urinary system. The urinary system includes two kidneys, two ureters, the bladder, two sphincter muscles, and the urethra. http://kidney.niddk.nih.gov/kudiseases/pubs/Yoururinary/
A sphincter is a circular band of muscle tissue that, when contracted, cuts off the flow of material from one place to another. There are two urinary sphincters, one at the base of the bladder and one at the pelvic canal along the urethra. The purpose of both sphincters is to prevent urinary leakage.
Urine passes from the urinary bladder through the urethra to the outside of the body.
The urinary system - also known as the renal system - produces, stores and eliminates urine, the fluid waste excreted by the kidneys. The urinary system includes two kidneys, two ureters, the bladder, two sphincter muscles and the urethra.
The kidneys each have a ureter that goes to the urinary bladder. One urethra goes from the urinary bladder to the outside surface of the body. Sphincters (ring-like muscles) control the opening and closing of the urethra.
Urethra
The Urinary system includes your kidney's urethra,and your bladder:)
The urethra is part of the reproductive and urinary system of the male.
The smooth muscle sphincter at the base of the urinary bladder closes.
The urinary system is comprised of the kidneys, ureters, bladder, and urethra. Carcinoma is cancer. "Carcinoma of the urinary" is a cancer of the kidneys, ureters, bladder or urethra.
The urethra.