13117886
Descripción
Fichas por J yadonknow, actualizado hace más de 1 año
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Creado por J yadonknow
hace más de 6 años
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| Pregunta | Respuesta |
| Function | Gametogenesis |
| Internal/external/both | Oviparous -egg Viviparous - birth Ovoviviparous - embryo develops in an egg inside the body |
| What determine sex in mammals/birds? | Sex chromosomes XY/ZZ - Male XX/ZW - Female |
| Hermaphroditic animals | Simultaneous or Sequential |
| Female genitalia anatomy (11) | Ovary fimbriae infundullum ampulla isthmus intramural portion Fundus uterus body cervix vagina |
| Ovaries | Endocrine organs Oestrogen Progesterone |
| Oogenesis - Stage 1 | Primordial follicles. Enclosed by single layer of flattened follicular/granulosa cells and basal lamina. Stimulated at puberty to 1' follices. |
| Stage 2 - 1' follicles unilayered | Oocyte enlargens and fol/gran. cells ^ in size - form cuboidal cells. Oocyte produces Zona Pellucida Glycoproteins important in binding spermatozoa produced |
| Stage 2 - 1' Follicle multilayered | Fol/gran cells ^ number/thicc, become stratified Z.P. assembled |
| Stage 3 | 2' follicle Follicular fluid-filled spaces coalesce to form a cavity Granulosa cells start producing oestrogen |
| Stage 4 - what is formed? | Graafian (4') follicle) Antrum produced - large fluid filled cavity |
| What does C. radiata do? | C. radiata surrounds oocyte provides nutrients |
| What stimulates the proteolytic activity of ovulation? | Gonadotropin LH |
| Where is ovum expelled + picked up? | Entrance of uterine tube |
| How do fimbriae facilitate this process? | Vibrate to generate a current |
| Corpus luteum | Endocrine function follicular cells release progesterone |
| Corpus albicans | Ovarian scar of Conn.T. after C.L. degeneration |
| Where does fertilisation usually occur? | Ampulla |
| Secretory cells of uterine tube epithelia | Peg cells watery secretions for gamete nourishment Ciliated Cilia beat rate in response to oestrogen |
| Cause of ectopic pregnancy | Chlamydia trachomantis |
| Ectopic pregnancy | Fertilised egg embeds in uterine tube or peritoneal cavity |
| Comparative anatomy | Simplex - one child Duplex - multiple (rodent) Bicornate (pig) Bipartite (sheep/cow) |
| Uterine wall anatomy | Para peri/visceral peri/peri Endometrium Myometrium |
| Endometrium (3) | epithelial layer Menstrual cycle zygote embeds here |
| Myometrium (3) | Interwoven smooth muscle CT-Hormonal response = hypertrophy/hyperplasia during pregnancy |
| Diagram | Para/peri/myo/endo -> stratum basalis/functionalis |
| Endocervix | Simple columnar cells Crypts mucus secreting cells (oestrogen decreases viscosity) |
| Ectocervix | S.S. Non-K. E |
| Transformation zone | dysplasia - precancerous epithelial changes - associated with HPV |
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