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 bladder is connected to the urethra, which delivers the urine to the outside of the body. The primary function of the urinary tract system is to remove substances from the blood, to form urine and help to regulate various metabolic processes. (Click an organ above to see its description.).Urethra. Function In females, the urethra is a tube that conveys urine from the urinary bladder to the outside of the body. In males, the urethra also functions as a urinary canal and as a passageway for cells and secretions from various reproductive organs.Structure The wall of the urethra is lined with mucous membranes and contains a relatively thick layer of smooth muscle tissue.he urinary tract system is a group of organs of the body, which are responsible for the excretion of urine. In humans, the urinary system includes 2 kidneys, a pair of tube-like structures, called the ureters, which connect the kidneys to the bladder.