Skip to main content Accessibility help

We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.

Close cookie message
×
  1. Home
  2. Search

Refine search

Refine search

Access:
Content type:
Publication date:
Apply   From and To filters
Subject: Show more
Journals Show more
Publishers: Show more
Societies Show more
Series: Show more
Collections: Show more

Actions for selected content:

Select all | Deselect all
  • View selected items
  • Export citations
  • Download PDF (zip)
  • Save to Kindle
  • Save to Dropbox
  • Save to Google Drive

Save Search

You can save your searches here and later view and run them again in "My saved searches".

Please provide a title, maximum of 40 characters.
Cancel
×

2 results

  • Chapter 8 - New concepts in the genetics of male reproduction and infertility

  • Edited by Larry I. Lipshultz, Stuart S. Howards, University of Virginia, Craig S. Niederberger, University of Illinois, Chicago
  • Book:
    Infertility in the Male
    Published online:
    19 May 2010
    Print publication:
    24 September 2009, pp 122-131

  • Summary

    The understanding of embryology provides a foundation for the mastery of anatomy. In the treatment of men with infertility, it is only appropriate that one deals with the basics of fetal development of the male reproductive tract. This chapter reviews the germ layers from which all tissues organize themselves and develop, and also reviews the ductal system and its critical role in reproduction. The cloaca, as incorporated yolk sac, is an endoderm-lined cavity, anchored at the caudal end by the cloacal membrane. The mesonephric ducts, which are mesodermal structures, are connected to the urogenital sinus bilaterally. The common excretory ducts eventually move into the prostatic part of the urethra and become known as the verumontanum. Testosterone stimulates numerous changes in the existing ductal system. In the presence of testosterone, the phallus lengthens and enlarges to form the penis.

  • Histological features in routine tonsillectomy specimens: the presence and the proportion of mesenchymal tissues and seromucinous glands

  • Suna Erkiliç, Abdullah Aydin, N. Emrah Koçer
  • Journal:
    The Journal of Laryngology & Otology / Volume 116 / Issue 11 / November 2002
    Published online by Cambridge University Press:
    08 March 2006, pp. 911-913
    Print publication:
    November 2002

  • Tonsillectomy is a frequently performed operation but there is little information about the histological features of a tonsillectomy specimen. In this study, we re-evaluated archival materials of 1220 cases who underwent tonsillectomy because of hyperplastic tonsils. Haematoxylin and eosin sections of the cases were re-examined and the presence and the proportion of mesenchymal tissues (skeletal muscle, cartilage, fat, bone) and seromucinous glands were noted as focal, multifocal or abundant. The incidence of skeletal muscle was 89 per cent (1085 cases; 206 focal, 465 multifocal, 414 abundant), seromucinous glands 35 per cent (429 cases; 236 focal, 134 multifocal, 59 abundant), fat 21 per cent (251 cases; 208 focal, 43 multifocal), cartilage three per cent (31 cases), and bone one per cent (seven cases). Also in 165 cases (14 per cent) skeletal muscle, in 12 cases (one per cent) was seromucinous glands, in eight cases (one per cent) was cartilage, in seven cases (one per cent) fat, and in four cases (less than one per cent) bone were found between hyperplastic lymphoid tissue. It can be concluded that mesenchymal tissues (skeletal muscle, cartilage, fat, bone) and seromucinous glands may be seen in different proportions in routine tonsillectomy specimens.