Reproductive life history

Reproductive life history PowerPoint PPT Presentation


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Puberty. Puberty is a transition period in life.The final endpoint of puberty is the production of viable gametes.. Puberty. Puberty is a transition period in life.The final endpoint of puberty is the production of viable gametes.Associated with an orderly sequence of physiological, anatomical and psychological landmarks.Occurs at different ages in different individuals.Age of puberty influenced by external factors..

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Reproductive life history

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1. Reproductive life history Hypogonadotrophic hypogonadism – 0.025% in males; 0.01% in females GnRH neurons arise in olfactory bulbs and migrate along pathways laid down by extracellular adhesion molecules. Kallmans syndrome - resistance to GnRH by mutations in receptorHypogonadotrophic hypogonadism – 0.025% in males; 0.01% in females GnRH neurons arise in olfactory bulbs and migrate along pathways laid down by extracellular adhesion molecules. Kallmans syndrome - resistance to GnRH by mutations in receptor

2. Puberty

3. Puberty

6. Indices of puberty

10. Pubertal changes

11. Adrenarche Adrenal androgens: (and may be particularly important therefore in women in which ovarian androgens are relatively small Adrenal androgens: (and may be particularly important therefore in women in which ovarian androgens are relatively small

12. Adrenarche Adrenal androgens: (and may be particularly important therefore in women in which ovarian androgens are relatively small Adrenal androgens: (and may be particularly important therefore in women in which ovarian androgens are relatively small

13. 2003 – 09.30 up o here!2003 – 09.30 up o here!

14. Pubertal changes

21. Adolescent growth spurt The acceleration of growth and increased fat deposition tends to occur earlier in girls than in boys.The acceleration of growth and increased fat deposition tends to occur earlier in girls than in boys.

22. Adolescent growth spurt The acceleration of growth and increased fat deposition tends to occur earlier in girls than in boys.The acceleration of growth and increased fat deposition tends to occur earlier in girls than in boys.

29. Pubertal changes

34. Society for Endocrinology Endocrine Nurse Training Course John MacIntyre Centre University of Edinburgh Tuesday 30th August 2005 Case Presentation - Precocious Puberty Stephanie Ward Paediatric Endocrine Clinical Nurse Specialist Great Ormond Street Hospital for Children NHS Trust

35. Details M.M. 11 ½ months Female White, Caucasian

36. Examination and Investigation Pelvic Ultrasound - large bulky uterus, measuring approximately 5.3 x 1.5 x 1.8 cms.. Brain MRI - There is a pedunculated non-enhancing mass extending inferiorly from the floor of the third ventricle on the left. Features are those of a hypothalamic hamartoma (benign tumour)

37. LH secretion at puberty

38. LH secretion at puberty

39. LH secretion at puberty

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