Slide151Imagei1/7Ovary(Cat)-LowMagFolliclesofvarying stages of developmentare locatedinthecortexThemedullacontainsbloodvesselslymphatics&loosectAtthislowmag.largefolliclessomewithoocvtescanbeseeneasily.Smallerfolliclesarelocated neartheperiphery
2. Different phases.--childhood:before development- all follicleareprimordial follicle(700,000-2,000,000)---puberty: the abilityfor reproducebegintodevelop(40,000 primordial follicle)---sexual maturity: (400-500 are released) different stage of follicles can be seenhave a cyclic change-menstrual cycle--menopause (climacteric): the ability ofreproduction decrease---senescence: all follicle disappear, replaced by CT
2. Different phases -childhood: before development- all follicle are primordial follicle(700,000-2,000,000) -puberty: the ability for reproduce begin to develop(40,000 primordial follicle) -sexual maturity: (400-500 are released) • different stage of follicles can be seen • have a cyclic change-menstrual cycle -menopause (climacteric) : the ability of reproduction decrease -senescence: all follicle disappear, replaced by CT
3. Development and maturation offollicle*component of a follicleprimary oocytefollicular cells*stages offolliclesPrimordial follicleGrowing follicleprimary folliclesecondary follicleMaturefollicle
3. Development and maturation of follicle *component of a follicle primary oocyte follicular cells *stages of follicles Primordial follicle Growing follicle primary follicle secondary follicle Mature follicle
(1Primordialfollicletheearliest stage offolliclelocatedin theperipheral cortex1millionatbirth,40,000beforepuberty
(1)Primordial follicle the earliest stage of follicle located in the peripheral cortex 1 million at birth, 40,000 before puberty
Structure> primary oocyte(in prophase of 1st meiotic division).30uminDlarge, vesicular nucleus with prominent nucleoluslight eosinophilic cytoplasm> follicular cell:a single layer of flattened cell surrounding the primaryoocyte
Structure primary oocyte ( in prophase of 1st meiotic division) •30um in D •large, vesicular nucleus with prominent nucleolus. •light eosinophilic cytoplasm follicular cell: a single layer of flattened cell surrounding the primary oocyte