What's the difference between gonad and testicle?

Gonad


Definition:

  • (n.) One of the masses of generative tissue primitively alike in both sexes, but giving rise to either an ovary or a testis; a generative gland; a germ gland.

Example Sentences:

  • (1) Their effects on various lipid fractions, viz., triglycerides (TG), phospholipids, free cholesterol, and esterified cholesterol, were studied in liver, plasma, gonads, and muscle.
  • (2) In this study, pinealectomy did not alter the inhibitory effect of testosterone on neuroendocine-gonadal activity in the male rat, suggesting that the pineal gland does not mediate the response of the rat hypothalamic-pituitary axis to testosterone.
  • (3) This condition may be caused by the prolonged, repetitive elevations of gonadal steroids and other hormones known to suppress gonadotropin-releasing hormone secretion that are elicited by their daily exercise.
  • (4) Symptoms of gonadal insufficiency, in the presence of high serum levels of gonadotropins, generally indicate primary gonadal failure.
  • (5) An effective gonadal shield should reduce the gonadal dose to a level low enough to preserve spermatogenesis in most patients.
  • (6) Gonadoblastoma is an unusual tumor that typically arises in a streak gonad or an abnormal testis of an individual having a Y chromosome.
  • (7) Females had an increased excretion of PCBs and increased accumulation in gut and gonads compared to males.
  • (8) Microscopic examination of lesions from F1a and F2a animals, of gonads from F1b and F2b and of selected tissues from the F3a generation revealed no changes of toxicological significance.
  • (9) Gonadal deficiency is the most frequent and probably the most specific disorder.
  • (10) In addition, FSH and LH were low or normal in the presence of low testosterone levels, suggesting that the hypothalamic pituitary gonadal axis is impaired.
  • (11) GnRH has paracrine (local) effects in the gonads and placenta, acts as a neurotransmitter in the central nervous system, and has autocrine regulatory effects in some tumour cells.
  • (12) The gonadally unresponsive patients had either pituitary tumours or premature menopause.
  • (13) Only 7 of 241 hatchlings had gonads that had not differentiated fully into ovaries or testes.
  • (14) From these results, we conclude that opiate peptides are released in response to the suckling stimulus in the cynomolgus monkey and that they mediate the effects of suckling on PRL secretion in both gonadal-intact and agonadal cynomolgus monkeys.
  • (15) By LHRH treatment 36 testes (20.5%) reached the scrotum, when HCG was added in unsuccessful cases 47 other gonads (26.8%) descended.
  • (16) To determine the pathogenesis of carbohydrate intolerance associated with gonadal dysgenesis, plasma glucose, insulin, glucagon, and growth hormone responses to oral glucose and intravenous tolbutamide, arginine and insulin were evaluated in 21 nonobese patients, 7-19 years old.
  • (17) It was caused at the frequency close to 100% in dysgenic offsprings reared above 25 degrees C, of which gonads were morphologically clearly different from those of usual GD sterility, whereas there was no indication of GD-3 sterility at temperatures below 24 degrees C. Temperature sensitive period of GD-3 sterility was estimated to the prepupal stage by shift-down experiment.
  • (18) These data suggest that the mechanism by which gonadal steroids act in the injured nervous system is partly through the differential regulation of the regenerative properties of the injured cell, presumably via hormone receptor-mediated action at the level of the neuronal genome.
  • (19) In the mantle of the female sea mussel Mytilus galloprovincialis seasonal variations in the adenylate cyclase activity correlate with gonadal development.
  • (20) The effect of glucocorticoids on gonadal steroid and gonadotropic hormone concentrations and subsequent follicular activity in cows undergoing normal estrous cycles was evaluated by administration of dexamethasone (DXM) during the middle of the luteal phase.

Testicle


Definition:

  • (n.) One of the essential male genital glands which secrete the semen.

Example Sentences:

  • (1) The ureter was connected to the epididymis of the testicle.
  • (2) On 89 regularly descended, autoptically obtained testicles, the following morphometric investigations were performed: Calculations of the volums, the mean diameter of the tubuli seminiferi, the total lenght of the tubuli, the mean content of spermatogonia per cross section of one tubulus seminiferus, and the total number of spermatogonia.
  • (3) You can also blast individual eyeballs from their sockets, or – if you're particularly skilful – make their testicles explode like a pair of microwaved eggs.
  • (4) The majority of testicular germ cell tumors in adults are accompanied by neoplastic intratubular germ cells; these cells were uniformly absent in ten pure yolk sac tumors (endodermal sinus tumors) of the testicle in children studied morphologically and immunohistochemically.
  • (5) The earlier the treatment of congenital dystopic testicles is performed the larger are the chances of a development of the tubules corresponding to age.
  • (6) Inferiority complexes are not frequent, 81.2% of the men do not suffer from inferiority complexes and the remaining 18% suffer from an inferiority complex associated with the loss of the testicle or inadequate ejaculation of semen.
  • (7) The incidence of Sertoli cell tumors and seminoma was approximately twice as high in dogs with unilaterally retained inguinal testicles as in abdominal cryptorchids.
  • (8) On the other hand, metastases in the epididymis of extraurinary adenocarcinomas most of which were digestive, were not discovered until the increased size and pain in the testicle attracted the patient's attention and the exploration led to the identification of the tumour in the epidiymis (2, 4, 5).
  • (9) We feel that this is an appropriate procedure to be used in patients who have lost the testicles and scrotum traumatically, either one or both testicles, or in the situation where both testicles have been spared.
  • (10) In conditions with retention of the testicles in the upper inguinal region LH-RH proved to be more successful than gonadotropin.
  • (11) Testosterone and dihydrotestosterone inhibit the contractions at lower doses and stimulate the contractions at higher doses and thus may regulate the transport of spermatozoa from the rat testicle.
  • (12) This disparity from testicular lymphatic drainage of the rat suggests that the immunologic privilege, if any, in mice and guinea pigs has an alternative explanation (e.g., lymphatic effect of steroidal factors emanating from the testicles or adrenal gland and altering the response to foreign graft).
  • (13) "He couldn't stop interfering … He once made me so angry I had to lead him away by the testicles."
  • (14) Except for the tibia, muscle, and brain, stable zinc decreased in all tissues of calves fed the 1500 ppm lead diets, and differences were significant in pancreas, heart, and testicle.
  • (15) Oxygen uptake was significantly lower in the pituitary gland and testicles of malnourished males than of controls.
  • (16) Ultrasonic examination is recommended preoperatively in boys with non-palpable testicles in order to provide optimal surgical intervention.
  • (17) In this manner, he was able to act out (by virtue of his body-testicle equation) his identification with, and control over, the disappearing testicles in the setting of a claustrophilic union with the mother.
  • (18) Statistically postoperative parameters all were significantly improved and the left testicle volume increased.
  • (19) Depression of spermatogenesis and decrease in the mean seminiferous tubular size was seen in the "normal" testicle after unilateral torsion.
  • (20) Other findings included: small seminal vesicles in 1.6% of examinations (Brahman breed highest with 8.6%, P less than .001), enlarged ampullae, 1.9%, 'soft' testicles, 3.4% and small testicles, 7.5%.