| 영문 | hormone | 한글 | 호르몬 |
|---|---|---|---|
| 설명 | 호르몬이란 특정한 내분비선에서 생성, 저장되어 있다가, 관류하는 혈액 중으로 분비된 다음 혈액에 실려 멀리 떨어져 있는 표적세포(호르몬이 작용을 나타내는 세포)에 이르러 그곳에서 특정한 기능을 발휘하는 물질을 말한다. 내분비샘이 아니더라도 어느 세포나 세포군에서 세포외액 중으로 분비된 다음 다른 세포에 가서 세포의 기능을 변동시키는 물질의 일부도 호르몬의 범주에 포함시키고 있으며 이들을 특별히 국소호르몬이라 부른다(예-아세틸콜린, 아드레날린, 콜레시스토키닌 등). 이에 비해서 특정 내분비샘에서 혈중으로 분비되는 진정한 의미의 호르몬들을 일반호르몬이라고 부른다. 호르몬을 흔히 3종의 무리로 분류를 하는데 아드레날린이나 thyroxine과 같이 아미노산의 유도체로 된 호르몬들(amine derivative), 많은 아미노산을 재료로 만들어졌거나 당단백으로 된 단백호르몬(peptide hormone), 그리고 콜레스테롤을 재료로 만들어진 지방호르몬(steroid hormone) 등으로 구분되며 이들은 대체로 종류에 따라 작용메커니즘을 달리하고 있다. |
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| 영문 | luteinizing hormone(LH) | 한글 | 황체형성호르몬 |
|---|---|---|---|
| 설명 | 여성의 월경은 정해진 순서에 의해 일어나게 된다. 먼저 난포자극호르몬이 뇌에서 분비되어 여성의 난소를 자극하게 되면 난포가 자극받아 난포호르몬(에스트로젠)을 분비하게 되고 이것은 다시 되먹이기 메커니즘 의해 뇌에 작용을 하여 황체화호르몬이 뇌에서 분비되고 이것이 이른바 절정에 이르렀을 때, 난포에서 배란이 일어나게 된다. 이후 난포는 황체로 변하게 되며, 배란된 난자가 수정되지 아니하면, 황체는 황체호르몬(프로게스테론)을 분비한 뒤 퇴화되고 곧 이어 월경이 일어나게 된다. 이 일은 정상적인 대부분의 여성에서 28일을 주기로 일어나며, 대개 황체화호르몬 절정 이후 마지막은 14일로 일정하다고 한다. |
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| testicular biopsy | <procedure> The removal of a fragment of a testicle for examination under the microscope. (13 Jan 1998) |
|---|---|
| testicular cancer | <oncology> A malignant growth that arises from a glandular cell in the testis. Common symptoms include a painless testicular mass in a male between the ages of 15 and 35 years. Monthly self-examinations are recommended in those between the ages of 15 and 39 years of age. (13 Jan 1998) |
| testicular cord | A group of structures which go through the inguinal canal to the testis. The structures include the vas deferens, arteries, veins, lymphatic vessels, and nerves. (12 Dec 1998) |
| testicular duct | The secretory duct of the testicle, running from the epididymis, of which it is the continuation, to the prostatic urethra where it terminates as the ejaculatory duct. Synonym: deferent canal, deferent duct, spermatic duct, spermiduct, testicular duct, vas deferens. (05 Mar 2000) |
| testicular dysgenesis | A congenital derangement of seminiferous tubular structure and function, resulting in male infertility; the defect in spermatogenesis may be incomplete, as in maturational arrest or premature sloughing, or spermatogenesis may be completely absent, as in the Sertoli-cell-only syndrome. (05 Mar 2000) |
| testicular feminisation | <endocrinology> if genetic males lack receptors for testosterone they develop as females and are unresponsive to male hormones. (13 Jan 1998) |
| testicular feminization | A condition, due to lack of cellular receptors for testosterone and dihydrotestosterone, in which the subject is phenotypically female but lacks nuclear sex chromatin and is of xy chromosomal sex. The uterus and tubes are absent or rudimentary, and the gonads are typically testes and may be abdominal or inguinal in position. The incomplete form is marked by partial fusion of the labioscrotal folds and clitoromegaly, and at puberty, variable feminization and partial virilization may both take place. (12 Dec 1998) |
| testicular feminization syndrome | <syndrome> A type of male pseudohermaphroditism characterised by female external genitalia (may be ambiguous if the syndrome is incomplete), incompletely developed vagina often with rudimentary uterus and fallopian tubes, female habitus at puberty but with scanty or absent axillary and pubic hair and amenorrhoea, and testes present within the abdomen or in the inguinal canals or labia majora; epididymis and vas deferens are usually present; androgens and oestrogens are formed, but target tissues are largely unresponsive to androgens; individuals are sex chromatin-negative and have a normal male karyotype; X-linked recessive inheritance; there is a defect in the androgen receptor protein. (05 Mar 2000) |
| testicular implant | A device placed surgically in the scrotum in males with absence or severe hypoplasia of the testis. Synonym: testicular prosthesis. (05 Mar 2000) |
| testicular microlithiasis | <radiology> Ultrasound features: multiple intratesticular non-shadowing echogenic foci, size: 1 - 3 mm, variable number, distribution: usually diffuse pathology: cellular degeneration, central calcified core clinical significance: prevalence: 0.05-0.6%, possible association with primary testicular malignancy, association: cryptorchid testes, infertility Ref: Backus et al., Radiology 1994; 192:781-785 (12 Dec 1998) |
| testicular plexus | The autonomic plexus derived from the aortic plexus and accompanying the testicular artery. Synonym: plexus testicularis, spermatic plexus. (05 Mar 2000) |
| testicular prosthesis | A device placed surgically in the scrotum in males with absence or severe hypoplasia of the testis. Synonym: testicular prosthesis. (05 Mar 2000) |
| testicular relapse | <oncology> Recurrence of leukaemia in the testicles. The disease may be restricted to the testicles or may also show evidence of disease in either the bone marrow or CNS. Treatment will depend on the timing and extent of relapsed disease. (13 Jan 1998) |
| testicular scan | <radiology> Tc-99m pertechnetate 30 mCi, interpretation: torsion = cold defect, epididymo-orchitis = hot spot, trauma = hot or cold (12 Dec 1998) |
| testicular torsion | <surgery> An acute condition that results when there is a twisting of the spermatic cord in the scrotum, thus compromising the blood supply to that testicle. Symptoms include severe testicular pain and swelling. (13 Jan 1998) |