Reproductive physiology Flashcards
1
Q
Regulatory hormones
A
- GnRH (gonadotrophin releasing hormone) =produced from hypothalamus
- LH (lutenising hormone)= anterior pituitary gland
- FSH (follicle stimulating hormone)= produced from anterior pituitary gland
- T (testosterone)= produced from testis
2
Q
Male reproductive system
A
/
3
Q
Spermatogenesis
A
/
4
Q
Male reproductive function
A
- starts at puberty
- functions continually
- normally continues throughout the rest of life
- sperm quantity and quality generally decreases with increasing age
- LH stimulates testosterone production
- FSH and testosterone sustain sertoli cell function
- sertoli cells support spermatogenesis
5
Q
Female reproductive function
A
- starts at puberty
- functions cyclically
- normally operates until 45 years old
- egg quality generally decreases with increasing age
- FSH stimulates ovarian follicle development and 17beta-estradiol synthesis
- LH stimulates progesterone production
- steroids regulate uterine endometrium
6
Q
The female reproductive system
A
/
7
Q
Changes in the female hypothalamus-pituitary axis
A
/
8
Q
Female circulating hormones
A
/
9
Q
Menstrual cycle
A
/
10
Q
Folliculogenesis
A
/
11
Q
Oogenesis
A
-ovulation=release of mature oocyte from the ovary
12
Q
Fertilisation
A
/
13
Q
Post-fertilisation
A
- Meiosis of maternal chromosomes resumes, forming female pronucleus (23 chromatids) and second polar body
- sperm chromosomes decondense to form male pronucleus
- chromatids in both pronuclei are duplicated=then align on mitotic spindle and are separated into 2 identical daughter cells (first cleavage division of the embryo)
