8. Female Reproductive System Flashcards Preview

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Flashcards in 8. Female Reproductive System Deck (203)
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151

pituitary gland

an endocrine gland that is suspended under the brain in the fossa of the sphenoid bone

supplies hormones essential to many vital processes, such as FSH

152

follicle-stimulating hormone (FSH)

secreted by the pituitary gland

causes the ovary's follicles (tiny secretory sacs in the ovary) to secrete estrogen

pituitary gland → FSH → ovary follicles → estrogen → hypothalamus → luteinizing hormone (LH) → ovulation → corpus luteum → estrogen & progesterone → fimbriae move ovum to uterus

153

luteinizing hormone (LH)

loot EE uh nye zing

released by the hypothalamus to stimulate the follicle to mature and release its ovum (ovulation)

pituitary gland → FSH → ovary follicles → estrogen → hypothalamus → luteinizing hormone (LH) → ovulation → corpus luteum → estrogen & progesterone → fimbriae move ovum to uterus

154

ovulation

process in which developed ovum/egg is expelled from the ovarian follicle and swept into the fallopian tube

ovarian follicles mature → one or more of the ovarian follicles rupture → a developed ovum is released → ruptured follicle develops golden appearance (corpus luteum)

155

corpus luteum

secretes estrogens and progesterone

after egg is expelled from the follicle into the fallopian tube, the follicular cells on the surface of the ovary form the corpus luteum

last about 12-14 hours if fertilization does not occur

if fertilization does occur, the hCG secreted by zygote keeps corpus luteum active

ovarian follicles mature → one or more of the ovarian follicles rupture → a developed ovum is released → ruptured follicle develops golden appearance → secretes estrogen & progesterone → deteriorates and becomes nonfunctional if fertilization does not occur

 

156

estrogen

generic term for any steroid that produces estrus

responsible for the development of female secondary sex characteristics, as well as for producing a suitable environment for the fertilization (endometrial thickening), implantation, and nutrition in the early embryo by acting on the female genitalia during the menstrual cycle

157

progesterone

principal progestional hormone of the body

responsible for the development and maintenance of the endometrial lining

released by the corpus luteum, placenta, and the adrenal cortex

158

fimbria

(pl. fimbriae)

the feathery ends of each fallopian tube, draws matured ovum into the tube

159

uterine adnexa

accessory organs of the uterus

includes fallopian tubes and ovaries

160

follicle

secretory sac

161

perimetreum

outer layer of uterus

162

myometrium

muscle layer of uterus

163

endometrium

innermost lining of the uterus

164

fundus

top, raised area of the uterus between the outlets for the fallopian tubes

165

corpus

large central area of the uterus

AKA body

166

cervix

the lower narrowed area of the uterus

AKA neck of the uterus

167

vagina

muscular, tube-like organ through which uterine lining is shed when the ovum is not fertilized with a spermatozoon

if fertilization does take place, vagina becomes the birth canal for the newborn

168

Douglas' cul-de-sac

small area between uterus and rectum

AKA rectouterine pouch

169

vulva

 external female genitalia

consists of the orifice (vaginal opening), labia majora, labia minora, clitoris, and perineum

170

Bartholin's glands

paired glands in the vulva that secrete a mucous lubricant for the vagina

171

lobes

15-20 divisions in each breast in which milk-secreting cells are located

172

lactiferous ducts

small tubular structures that extend from milk-secreting cells and expand into lactiferous sinuses as they converge like spokes toward the nipple

173

conception

event that occurs when one ovum unites with one sperm as a result of sexual intercourse or fertilization in a clinical setting

marks the beginning of pregnancy

174

zygote

cell formed when the sperm and ovum unite

175

gestation

period of about 38 weeks in which the development of a new individual occurs from conception to birth

176

implantation

embedding of a zygote into the uterine lining about 7-10 days after ovulation

177

human chorionic gonadotropin

hormone secreted by the zygote during implantation

prevents corpus luteum from deteriorating and allows the continued production of estrogen and progesterone to support the pregnancy and prevent menstruation

178

embryo

3rd to 8th week of life

179

amnion

thin but tough membrane lining the chorion, containing the embryo and later the fetus

surrounded by amniotic fluid

180

chorion

CORE ee ahn

outermost extraembryonic membrane

composed of trophoblast lined with mesoderm and develops villi about 2 weeks after fertilization