Female Repro Flashcards
Primordial germ cells
Yolk sac ENDODERM➡️ D.mesentery ➡️gonadal ridge
⛔️gender yet
Repro system fn
Ova
(Endocrine fn) Secr Estrogen & Progesterone
Oogonia
At gonadal ridge➡️✳️mitosis
Form PRIMARY Oocyte
In gonadal ridge; 1st MEIOSIS div way b4 birth. [Replicated like MITOSIS]
⛔️ at PHOPHASE
Oogonia➡️✳️Primary oocyte (DS diploid 2n)
Completes MEIOSIS 1 (at/b4) Ovulation
Primary oocyte➡️ secondary oocyte (DS haploid n)
At fertilization:✳️ secondary oocyte completes MEIOSIS 2 [divides like MITOSIS]
Secondary oocyte➡️ovum (ss haploid 1n) & 2nd polar body
Ovary
Exocrine fn: ova
Endocrine fn: estrogen & progesterone
Cortex & medulla
Ovary Cortex
Sup. epi➡️ sim cuboidal
Tunica albuginea: DICCT
Stroma: LCT
In some ovaries, irregular shaped lumina, remnants of
Rete ovarii
Primary Oocyte & it’s encasing cells at ANY stg in it’s dev
Follicle
SINGLE layer of SQUAMOUS follicular epi over Primary Oocyte
Primordial follicle
Single layer of CUB/COL follic epi
Primary Follicle
STRATIFIED follic epi + dev THECA + Zona pellucida dev
Secondary Follicle
Follic epi w/ ANTRUM (liquor folliculli)
+ THECA i&e
Stratum granulosum, cumulus oorphus, corona radiata
Tertiary follicle=vesicular follicle
Mature=graffian follicle
Contains proteins binds Estrogen nec. for primary oocyte dev
Liquor folliculi
Theca interna
Endocrine cells
LH:✳️thecal cells➡️secr ANDROGENS
Atresia
Degen dev follic
Pyknosis: dark nuclei
Chromatolysis: dissolved nuclei
Glassy membrane: thickens BM
Cortical tissue at to border of equine ovary
Ovarian fossa
Tertiary follicle TI & FC ➡️ secr steroid hormones
Interstitial endocrine cells
Ovulation
pituitary: LH➡️✳️prostaglandin prod
➡️✳️collagenase ➡️⚡️digest follic wall
Bleeding on ovary
Corpus hemorrhagicum
Corpus luteum
Follic cells & theca interna cells
Ovary collagen scar after CL degen
Corpus albicans
Uterus layers
Endometrium: t.mucosa-submucosa, caruncles & ut gls
Myometrium: sm.M ⚪️i Lo & stratum vasculare
Perimetrium: t.serosa
