Sperm Health Dictionary

This comprises the VAS DEFERENS, nerves and blood vessels, and it runs from the cavity of the ABDOMEN to the TESTICLE in the SCROTUM.... spermatic cord

Intracytoplasmic sperm injection (ICSI) is the most signi?cant therapeutic advance in male INFERTILITY treatment in the past 30 years. The technique is used when in vitro fertilisation (IVF – see under ASSISTED CONCEPTION) is not possible because the man has very few, motile, normal sperm (see SPERMATOZOON), or when previous attempts at IVF have not produced a fertilised EMBRYO. ICSI requires a single sperm which is injected directly into the cytoplasm of an egg previously retrieved from the woman. Once fertilised, the embryo is transferred to her UTERUS. For men with no sperm in the semen, it may be possible to retrieve sperm by needle aspiration of the EPIDIDYMIS under local anaesthetic (see ANAESTHESIA). Other techniques involve microsurgical retrieval from the epididymis or TESTICLE under a general anaesthetic. Potential complications include scrotal pain, bruising, HAEMATOMA formation and infection. ICSI and surgical sperm-retrieval require extensive training and expertise and is currently available in only a few selected

infertility units. Safety concerns relate to a higher-than-expected rate of abnormalities in the SEX CHROMOSOMES after ICSI, and also the potential risk of transmitting paternal genetic defects in the Y chromosome to sons born after ICSI.... intracytoplasmic sperm injection

The production of mature sperm (see SPERMATOZOON) in the testis (see TESTICLE). The sperm cells originate from the outermost layer of the seminiferous tubules in the testis: these multiply throughout reproductive life and are transformed into mature spermatozoa, a process that takes up to 80 days.... spermatogenesis

The passage of SEMEN without erection of the PENIS or ORGASM.... spermatorrhoea

See SPERMATOZOON.... spermatozoa

(Plural: spermatozoa.) This is the male sex or germ cell which unites with the OVUM to form the EMBRYO or fetus. It is a highly mobile cell approximately 4 micrometres in length – much smaller than an ovum, which is about 35 micrometres in diameter. Each millilitre of SEMEN contains on average about 100 million spermatozoa, and the average volume of semen discharged during ejaculation in sexual intercourse is 2–4 ml. (Some recent research suggests that male fertility is falling because of a reduction in the production of viable spermatozoa – possibly due to environmental factors, including the discharge of hormones used for agricultural purposes and for human hormonal contraception.)

Once ejaculated during intercourse the spermatozoon travels at a rate of 1·5–3 millimetres a minute and remains mobile for several days after insemination, but quickly loses its potency for fertilisation. As it takes only about 70 minutes to reach the ovarian end of the uterine tube, it is assumed that there must be factors other than its own mobility, such as contraction of the muscle of the womb and uterine tube, that speed it on its way.... spermatozoon

Contraceptive preparations that kill sperm. They may be in the form of gels, pessaries, cream or foam and should be used with a barrier contraceptive such as a diaphragm or a condom. (See CONTRACEPTION.)... spermicide

A harmless cyst of the epididymis containing fluid and sperm.... spermatocele

Linn.

Synonym: Borreria articularis (Linn. f.) F.N. Williams. Borreria hispida (L.) K. Schum. Spermacoce articularis L. f.

Family: Rubiaceae.

Habitat: The Himalaya, from Simla westwards to Assam and southwards to Kanyakumari.

Ayurvedic: Madana Ghanti.

Siddha/Tamil: Nellichoori.

Action: Leaves—an extract is given as an astringent in haemorrhoids and gall stones. Seeds—demulcent; given in diarrhoea and dysentery. Root—prescribed as a mouthwash to cure toothache. A decoction of the herb is used in the treatment of headache.

The weed is rich in calcium and phosphorus; contains beta-sitosterol, ursolic acid and D-mannitol.

The plant gave alkaloid borreline, along with beta-sitosterol, ursolic acid and iso-rhamnetin.... spermacoce hispida

The name applied to the blood vessels and other structures associated with the TESTICLE.... spermatic

Contraceptive preparations that kill sperm. They are usually recommended for use with a barrier device.... spermicides

see MESA.... microsurgical epididymal sperm aspiration

see PESA.... percutaneous epididymal sperm aspiration

(spermato-) combining form denoting 1. sperm. 2. organs or ducts associated with sperm.... spermat

either of two arteries that originate from the abdominal aorta and travel downwards to supply the testes.... spermatic artery

n. a small cell produced as an intermediate stage in the formation of spermatozoa. Spermatids become embedded in *Sertoli cells in the testis. They are transformed into spermatozoa by the process of spermiogenesis (see spermatogenesis).... spermatid

n. a cell produced as an intermediate stage in the formation of spermatozoa (see spermatogenesis). Spermatocytes develop from spermatogonia in the walls of the seminiferous tubules of the testis; they are known as either primary or secondary spermatocytes according to whether they are undergoing the first or second division of meiosis.... spermatocyte

n. (pl. spermatogonia) a cell produced at an early stage in the formation of spermatozoa (see spermatogenesis). Spermatogonia first appear in the testis of the fetus but do not multiply significantly until after puberty. They act as stem cells in the walls of the seminiferous tubules, dividing continuously by mitosis and giving rise to *spermatocytes.... spermatogonium

n. the presence of spermatozoa in the urine. Spermatozoa are occasionally seen on microscopic examination of the urine and their presence is not abnormal. If present in large numbers, the urine becomes cloudy, usually towards the end of micturition. Abnormal ejaculation into the bladder on orgasm (retrograde ejaculation) may occur after *prostatectomy or other surgical procedures or in neurological conditions that destroy the ability of the bladder neck to close on ejaculation.... spermaturia

a facility that collects, freezes, and stores human sperm for future use in *artificial insemination (see cryopreservation). Sperm is donated by men who relinquish legal rights to any future child, and donors’ identities are generally unknown to recipients. In some cases, men store their sperm for their own future use if they are to undergo a medical treatment that might leave them sterile.... sperm bank

see seminal analysis.... sperm count

n. the process by which spermatids become mature spermatozoa within the seminiferous tubules of the testis. See spermatogenesis.... spermiogenesis