Difference between revisions of "Turner's Syndrome"

Revision as of 11:17, 15 July 2008

Occurs in Mares
X0 sex chromosome complement
Normal autosomal chromosome complement
Develop an ovary
There is only one active X chromosome, so Oocytes die.
The death of Oocytes is followed by loss of follicles.
This leads to Ovarian Dysgensis (abnormal development) and a highly regressed Streaky Ovary that does not secrete the normal ovarian steroid hormones.
The Ovary therefore lacks tone and has no follicular cycles.

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-#redirect[[Intersex#Abnormalities of chromosomal sex]]
+<big><center>[[Reproductive System|'''BACK TO REPRODUCTIVE SYSTEM''']]</center></big>
+<big><center>[[Reproductive_System#Fertilisation.2C_Implantation_and_Early_Embryonic_Development|'''BACK TO FERTILISATION , IMPLANTATION and EARLY EMBRYONIC DEVELOPMENT''']]</center></big>
+<big><center>[[Fertilisation%2C_Implantation_and_Early_Embryonic_Development_-Sexual_Differentiation-_Anatomy_%26_Physiology#Associated_Disorders|'''BACK TO SEXUAL DIFFERENTIATION''']]</center></big>
+== Aetiology ==
+* Occurs in Mares
+* X0 sex chromosome complement
+* Normal autosomal chromosome complement
+* Develop an ovary
+* There is only one active X chromosome, so Oocytes die.
+* The death of Oocytes is followed by loss of follicles.
+* This leads to Ovarian Dysgensis (abnormal development) and a highly regressed Streaky Ovary that does not secrete the normal ovarian steroid hormones.
+* The Ovary therefore lacks tone and has no follicular cycles.
+== Morphology ==
+* Normal external genetalia
+* Small stature
+* Flaccid Uterus
+* Small, inactive Ovaries
+* Complete absence of Ovarian activity and consequent Anoestrous