The first segment of the urethra is the prostatic urethra, which runs through the prostate gland in males. It measures about 3-4 cm in length and serves as a passageway for both urine and semen. The prostatic urethra is surrounded by prostate tissue, which contributes to the fluid component of semen during ejaculation. In females, the urethra is much shorter and does not have a prostatic segment.
The male urethra is divided into four parts: the prostatic urethra, which runs through the prostate gland; the membranous urethra, the shortest segment that passes through the urogenital diaphragm; the spongy (or penile) urethra, which runs through the penis and is surrounded by erectile tissue; and the external urethral orifice, where urine and semen are expelled from the body. Each segment has distinct anatomical features and functions.
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.
The portion of the urethra between the prostate and penis is called the membranous urethra. It is a short segment located in between the prostatic and spongy parts of the urethra. It passes through the urogenital diaphragm before continuing through the penis.
The membranous urethra is a segment of the male urethra that extends from the prostatic urethra to the bulbous urethra. It is approximately 1-2 centimeters long and passes through the urogenital diaphragm, which contains the external urethral sphincter. This section is relatively narrow and is more susceptible to injury compared to other parts of the urethra, making it clinically significant in trauma cases. In females, the urethra is shorter and does not have a distinct membranous section.
The glandular urethra refers to a portion of the male urethra, specifically the segment located within the prostate gland. It is responsible for transporting urine and semen out of the body. This section contains mucous glands that secrete fluids, which help lubricate the urethra and facilitate the passage of urine and sperm. The glandular urethra plays a crucial role in both the urinary and reproductive systems.
The epididymus leaves the testies and connects ot the Vas Deferens (also called the Ductus Deferens) which attaches to the ejaculatory duct. The ejaculatory duct is a short segment that connects to the urethra.
Crustaceans have poisonous claws on the first segment.
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The act of measuring the circumference of the urethra with a urethra gauge is called urethra gauging, an assessment performed by a health-care provider.The act of dilating the size of the urethra with a urethra sound is called urethra sounding, an intervention performed by a health-care provider.Urethra sounds are used to dilate the size of the urethra, usually performed by a urology specialist (urologist). This process of urethra sounding is performed on patients with urethra strictures as an intervention. This process of dilating the urethra differs from the measurement process in that the process of urethra sounding is an intervention. The process of urethra gauging is an assessment. Urethra gauges are used by doctors, nurses, and physician assistants to measure the circumference of the urethra prior to insertion of a urinary catheter, indwelling urinary catheter/Foley catheter. However, patients that undergo urinary catheterization without first the use of a urethra gauge are more likely to require the services of a urologist to circumvent further complications of improper urinary catheterization.
the urethra
The prostatic or membranous urethra
For any segment base address, segment first physical address will have 0 in the least significant position in hexadecimal format. Let say, our Segment base =0x1234, and we calculate segment first physical address as 0x12340