semen

Examples of semen in the following topics:

• Semen

  • Semen is an organic fluid, also known as seminal fluid, that may contain spermatozoa.
  • Semen is produced and originates from the seminal vesicles, located in the pelvis.
  • The process that results in the discharge of semen is called ejaculation.
  • Semen quality is a measure of the ability of semen to accomplish fertilization and thus a measure of a man's fertility.
  • Semen can be preserved for long-term storage by cryopreservation.

• Accessory Sex Glands

  • The seminal vesicles secrete a significant proportion of the fluid that ultimately becomes semen.
  • Seminal vesicle fluid is alkaline, resulting in human semen with a mildly alkaline pH.
  • The vesicle produces a substance that causes the semen to become sticky after ejaculation, thought to help keep the semen near the cervix.
  • The high fructose concentrations provide nutrient energy for the spermatozoa when stored in semen in the laboratory.
  • The prostate also contains some smooth muscles that help expel semen during ejaculation.

• Urethra

  • In males, the urethra travels through the penis, and carries semen as well as urine.
  • Semen does not flow through the bladder or the rest of the urinary tract, instead it is a fluid made of sperm cells and other fluids that passes through a few different glands from the testes to the urethra through the va defrens.
  • Aside from semen, and the male urethra's greater length, it is structurally similar to the female urethra.

• Prostate Disorders

  • The prostate's primary function is to produce prostatic fluid, a component of semen.
  • Also, during ejaculation, smooth muscles in the prostate contract to help propel semen through the urethra.
  • Asymptomatic inflammatory prostatitis, Category IV prostatitis, is observed in 6-19% of men when pus cells are detected in their semen without manifestation of clinical symptoms.

• Sperm

  • Sperm quantity and quality are the main parameters in semen quality, a measure of the ability of semen to accomplish fertilization.

• Penis

  • It serves as a passage both for urine and semen.
  • The prostate as well as the bulbourethral glands add further secretions, then the semen is expelled through the penis.
  • Ejaculation is the ejection of semen from the penis and is usually accompanied by orgasm.
  • A series of muscular contractions delivers semen, containing sperm cells or spermatozoa, from the penis.

• Anatomy of the Male Reproductive System

  • To produce, maintain, transport, and nourish sperm (the male reproductive cells), and protective fluid (semen).
  • Semen and urine leave the penis through the urethra.

• Overview of the Male and Female Reproductive Systems

  • During this process, the erect penis of the male is inserted into the female's vagina until the male ejaculates semen, which contains sperm, into the vagina.
  • This may be an evolutionary adaptation to expel the semen left by other males while at the same time increasing the possibility of fertilization with the current male's semen.

• Surgical Sterilization

  • This prevents sperm produced in the testicles from entering the ejaculated semen (which is mostly produced in the seminal vesicles and prostate).

• Barrier Methods

  • The male condom is put on a man's erect penis and physically blocks ejaculated semen from entering the body of a sexual partner.
  • The female condom is inserted into the vagina, forming a barrier that prevents semen for contacting the vagina and external genitalia.