Ejaculation - Wikidoc > 자유게시판

Ejaculation has two phases: emission and ejaculation proper. The emission section of the ejaculatory reflex is beneath management of the sympathetic nervous system, whereas the ejaculatory section is underneath control of a spinal reflex at the level of the spinal nerves S2-four through the pudendal nerve. Throughout emission, the two ducts often called vas deferens contract to propel sperm from the epididymis the place it was saved as much as the ampullae at the highest end of the vas deferens. The start of emission is usually skilled as a "point of no return," often known as level of ejaculatory inevitability. The sperm then passes by means of the ejaculatory ducts and is combined with fluids from the seminal vesicles, the prostate, and the bulbourethral glands to kind the semen, or ejaculate. During ejaculation proper, the semen is ejected by way of the urethra with rhythmic contractions.[1]

Throughout heterosexual intercourse, the vagina gives sexual stimulation to the penis, usually leading to orgasm and ejaculation. Normally, ejaculation is required for emission of sperm; if ejaculation occurs while the penis is both close to or within the lady's vagina, sperm can then fertilize a lady's egg and impregnate her. Nonetheless, virtually all males produce a small amount of pre-ejaculate fluid when their penis is erect and they are sexually stimulated, and this pre-ejaculate may comprise some sperm which also can lead to pregnancy. For that reason, coitus interruptus should result in undesirable pregnancies for couples engaging in vaginal intercourse if different types of start control usually are not used as effectively.

Sadly, it's troublesome to remove false-positive check results. For instance, a mammogram may accurately show abnormal cells within the breast ducts that would grow to be cancerous, when in actuality they aren't life-threatening and will not cause signs [source: National Cancer Institute]. Patients screening for ovarian cancer could also be given a cancer antigen 125 blood take a look at (CA-125). If a woman's CA-125 stage is elevated, most cancers is suspected and extra testing may outcome. The issue is, lots of other circumstances may cause an elevated CA-125 level, equivalent to diverticulitis, site (laptopcheck.org) pregnancy and even normal menstruation, so the test is not advisable for girls with solely an average danger of ovarian most cancers [source: Laughlin-Tommaso].

Wind Damp: Arthritis is a manifestation of this pattern. Like dampness in nature, which is persistent and requires time to eradicate, the dampness pathogenic influence is tough to cure and takes some time to resolve. The affect of wind additionally causes the pain to migrate from joint to joint, typically disappearing for a while solely to reappear without warning. Treatment for this syndrome contains herbs that drain dampness and improve circulation of qi and blood by way of the affected areas. Moxibustion therapy -- the application of heat -- is especially useful in this case.

Spina bifida: Spina bifida is a failure within the closure of the bony vertebral column with or without protrusion of the nerve tissue of the spinal cord. Paralysis under the defect typically accompanies spina bifida if the spinal cord does protrude. When the spinal cord does not protrude, the vertebral defect could go unnoticed. Clues to indicate the presence of this form of spina bifida are abnormalities of the skin and tufts of hair overlying the spine in the decrease part of the again.