Title: Prenatal Development of Pelvic Urethra in Goat (Capra hircus) Desarrollo Prenatal de la Uretra Pélvica en Cabras ( Capra hircus)
Abstract: Abhinov Vrema; Archana, P.; M. M. Farooqui & Ajay PrakashVREMA, A.; ARCHANA, A.; FAROOQUI, M. M. & PRAKASH, A . Prenatal development of pelvic urethra in goat (Capra hircus) .Int. J. Morphol., 31(2):729-738, 2013.SUMMARY: The study was conducted on the embryo/foeti of goat from 0-150 days of gestation, divided into group I (0-30days), group II (31-60 days), group III (61-90 days), group IV (91-120 days) and group V (121-150 days of gestation). In group Iwhole embryo was processed and serial sections were cut whereas, in rest of the groups, pelvic urethra was dissected out and thetissues from the representative areas were used for the study. Grossly, on 49.33 days of gestation the pelvic urethra was prese nt in theform of smooth cylindrical tube, approximately 4mm in length. The primordial of vesicular gland and bulbourethral gland appearedon 52 days of gestation at the junction of neck of urinary bladder with pelvic urethra and at the junction of pelvic and penile urethrarespectively. The length, width, height and circumference of pelvic urethra increased with increased in gestation period, howev er thelength (7 times) and circumference (9 times) increased maximum from group II to group V. The morphometrical parameters (length,width, height and circumference) of pelvic urethra were significantly correlated with the age and weight of foetus throughout g estationperiod. The colliculus seminalis, which was present in the form of ridge on 72 days of gestation, became distinct on 75 days ofgestation. Histologically, on 28 days of gestation, the urogenital sinus was present as a cleft with in the cluster of cells. O n 55 days ofgestation, the process of luminization started with in the wall of pelvic urethra, which started first in its caudal part and proceededcranially. All the four layers (Tunica mucosa, submucosa, muscularis and adventitia) were distinct. The lumen was lined with 3-4layers of stratified epitheliumin group II but in group III on 70 days of gestation and beyond this distinct transitional epith elium waspresent. The formation of cavernous spaces started at 59 days of gestation. Their number and size increased with increased in g estationperiod. The thickness of submucosa, muscularis and adventitia increased with the advancement in the age of foetus, whereas theheight of epithelium decreased.KEY WORDS: Anatomy; Histology; Pelvic urethra; Goat.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
Access and Citation
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot