Opposite of a patrilineal descent system is a matrilineal descent system, or a system of descent in which an individual's kin membership is traced through women.Again oversimplifying with some alliteration, it's one in which family descent is traced through the mamas!pposite of a patrilineal descent system is a matrilineal descent system, or a system of descent in which an individual's kin membership is traced through women. Again oversimplifying with some alliteration, it's one in which family descent is traced through the mamas!
Urethra: The urethra is the tube that carries urine from the bladder to outside of the body. In males, it has the additional function of ejaculating semen when the man reaches orgasm.When the penis is erect during sex, the flow of urine is blocked from the urethra, allowing only semen to be ejaculated at orgasm.rethra: The urethra is the tube that carries urine from the bladder to outside of the body. In males, it has the additional function of ejaculating semen when the man reaches orgasm.
Ureters are the two funnel-shaped tubes that carry urine from the kidneys to the bladder. A ureter that does not connect properly to the bladder and drains somewhere outside of the bladder is called an ectopic ureter.In boys the ectopic ureter usually drains into the urethra closer to the prostate.ctopic Ureter. Ureters are the two funnel-shaped tubes that carry urine from the kidneys to the bladder. A ureter that does not connect properly to the bladder and drains somewhere outside of the bladder is called an ectopic ureter. In boys the ectopic ureter usually drains into the urethra closer to the prostate.