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.
The ureters are tube shaped organs whose main function is to deliver urine from the kidneys downward to the urinary bladder. They have a funnel shaped area at the top where they connect to the kidneys called the renal pelvis.These tubes are approximately 9.8 inches (25 cm) long.hese 10 animal facts will amaze you. The ureters are tube shaped organs whose main function is to deliver urine from the kidneys downward to the urinary bladder. They have a funnel shaped area at the top where they connect to the kidneys called the renal pelvis. These tubes are approximately 9.8 inches (25 cm) long.