Stonebraker Reproductive System Anatomy

STUDY
PLAY

Terms in this set (...)

Zygote
fertilized egg
Cleavage
rapid equal cell division, no growth, smaller and smaller
Morula
raspberry (~16 cells, 3 days)
Blastula
hollow ball (day 4, implantation)
Gastrula
in-folding that form "germ" layers (18 days)
Endoderm
gut
Mesoderm
muscles and organs
Ectoderm
skin, nerve
First Heartbeat
21 days (5wks)
Neural tube formation
28 days(6wks)
fertilization
occurs in fallopian tubes
Menstrual Phase
Shedding of endometrial lining; at end increase in estrogen (day 5)
Proliferative Phase
Increase in estrogen, due to development of follicles (eggs), increase in estrogen; thickening endometrium
Ovulation
Day 14, release of egg, spike in LH
Secretory Phase
Increase in progesterone by corpus luteum; increased blood supply to endometrium
progesterone
maintains endometrial lining, prevents menstruation; produced by corpus luteum and placenta
FSH
causes follicle to grow larger; secreted by anterior pituitary
LH (luteinizing hormone)
triggers ovulation; secreted by anterior pituitary
Endometrium
inner layer of uterus (blood vessels and mucous layer)
myometrium
middle smooth muscle layer of uterus
perimetrium
outermost layer of uterus
vagina
receives penis/sperm, birth canal
hymen
protective membrane at distal end
uterus
Receives, retains and nourishes fertilized egg
Fallopian tubes
receives and transports ovulated oocyte
Fimbriae
fingers at ends of tubes that wave ovary into tubes
Ectopic pregnancy
egg fertilized outside of tube
Primary spermatocyte
diploid cell that completes meiosis I to produce secondary spermatocytes
Secondary spermatocyte
haploid cells that complete meiosis II to produce 4 haploid spermatids
Acrosome
head of sperm; contains digestive enzymes to help sperm penetrate egg
peristalsis and cilia
How egg is moved down fallopian tubes
Oocyte
immature egg
Primary oocyte
diploid cell that completes meiosis I to produce ONE secondary oocyte and one polar body
Secondary oocyte
ovulated haploid cell the completes meiosis II to produce ONE ovum and one polar body IF fertilized
Graafian follicle
Mature follicle/oocyte; what ruptures ovary and expels egg
Corpus luteum
Ruptured follicle that remains in ovary; secretes LH to maintain endometrium; degenerated without fertilization
Ovaries
produce eggs (exocrine), produce estrogen/progesterone (endocrine)
Female External Genetalia
Vulva (Mons pubis, labia, clitoris, urethral and vaginal openings)
Bulbourethral glands
Mucus released during sex to clean urethra, act as lubrica
Prostate
at base of bladder; milky fluid activates sperm
Seminal vesicles
semen production
Epididymis
temporary storage of immature sperm
Vas deferens (ductus deferens)
runs from testes back into body around bladder to join urethra
Urethra
in males, part of urinary and reproductive system to transport urine and sperm (never at the same time)
prostatic urethra
travels thru the prostate
membranous urethra
between prostate and penis
penile urethra
travels thru the penis
Testes
Produce testosterone (endocrine); produces sperm (exocrine)
Seminiferous tubules
sperm production tubes in testes
Semen/Glands
nourish sperm
Scrotum
store testes; outside body, lower body temperature necessary to produce healthy sperm
Penis
delivers sperm
Follicular stage
egg/follicle matures, prepares for release (before ovulation) requires FSH
Path of Egg
Ovary, (fimbrae), fallopian tube, uterus
Luteal stage
corpus luteum produces progesterone to maintain and develop endometrium (if fertilization, then embryo takes over this job)
Path of Sperm
seminiferous tubules, epididymis, vas deferens, prostate urethra, membranous urethra, penile urethra
Male Exocrine Glands (order)
Seminal vesicles, prostate, bulbourethral
spermatogenesis
Spermatogonium- single parent cell (2N)
Primary= diploid (1 of them)
Secondary = haploid (2 of them)
Spermatids = haploid (4 of them)
oogenesis
Oogonium - single parent cell (2N)
Primary= diploid (1 of them)
Secondary = haploid (2 of them)
Ovum = haploid (1 of them); 3 polar bodies
YOU MIGHT ALSO LIKE...
STUDY GUIDE