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What muscle assists in emptying the male urethra?
The assists in emptying the male urethra
How does the bladder hold back urine?
With the sphincter muscle, found at the junction of the bladder and the urethra. Involuntary muscles. There is a whole part of the brain that controls involuntary responses and functions. Example:breathing, heart pumping blood.
What is the Part of the urethra within the Urogenital diaphragm?
The part of the urethra within the urogenital diaphragm is called the membranous urethra. It is a short segment of the urethra that passes through the urogenital diaphragm, which is a sheet of muscle and connective tissue located between the pelvic cavity and perineum.
What controls smooth muscle and cardiac muscle?
Autonomic system
What muscle controls the size of the bronchioles in the lungs?
SmooTh muscle
What is the urethra?
In both men and women, the urethra is the tube through which urine is excreted from the urinary bladder to outside the body. Urine flows from the bladder out of the body by way of the urethra when the sphincter muscle is relaxed. The urethral sphincter muscle is at the base of the bladder and controls the release of urine from the bladder into the urethra, which then flows out of the meatus (opening at the end of the urethra) when urinating. The urethra is approximately 1 1/2 inches long in females and around 8 inches long in males. The urethral meatus is located at the tip of the penis in men and between the clitoris and vaginal opening in women. In males the urethra also carries semen from the ejaculatory duct outwards through the penis. The semen is directed from the reproductive organs through the vas deferens tube for semen that intersects with the urethra at the prostate gland. A valve there at the base of the urethra directs the flow of either urine or semen through the urethra and out of the meatus.
What excretes urine?
Smooth muscle surrounding the bladder pushes urine out of the urethra.
What must relax in order for urination to occur?
The external urethral sphincter, a muscle that surrounds the urethra, must relax to allow the flow of urine out of the bladder and through the urethra. Relaxation of this muscle is controlled by the autonomic nervous system.
Cardiac muscle controls the what?
The heart.
What is the cardiac muscle controls?
heart
Does urethra have valves?
No the bladder has a sphincter muscle to control flow but past that is clear sailing.
What is the superior upper portion of the male urethra encircled by?
The superior upper portion of the male urethra is encircled by the internal urethral sphincter, which is a smooth muscle that helps control the flow of urine from the bladder into the urethra.
