reproductive system Flashcards
produce offspring to ensure the survival of human species
Reproductive System
sperm cells (testes), egg cells (ovaries)
Production of Gametes
sperm and egg meet at fallopian tube
Fertilization
uterus - nourishing fetus
Development
milk
Nourishment
sex hormones (testosterone, estrogen, progesterone)
Production of Reproductive Hormones
sex cells ( sperm in males, oocytes in female)
Gametes
a special type of cell division that leads to formation of sex cells
Meiosis
type of cell division that occurs in non-reproductive cells, and produces exact copies of the parent cell
Mitosis
23 chromosomes (to produce offspring), chromosomes from gametes
Haploid
46 chromosomes, 22 homologous autosomal pairs
Diploid
XX
Female
XY
Male
what develops after fertilization
Zygote
14 to 56 days after fertilization
Embryo
56 days after fertilization
Fetus
testes, series of ducts, accessory glands and supporting structures
Male Reproductive System
saclike structure containing testis
Scrotum
male gonads, produce sperm cells, and secrete testosterone by interstitial
Testes
storage site of immature sperm cells
Epididymis
propels live sperm from their storage sites into the urethra
Vas Deferens/Ductus Deferens
minor operation, incision to the skin
Vasectomy
passage way for both urine and male reproductive fluids
Urethra
3 regions of urethra
1.) prostatic urethra
2.) membranous urethra
3.) spongy (penile) urethra
organ of copulation and function in the transfer of sperm cells from male to the female
Penis
Three tissue cause of erection enlargement
1.) corpora cavernosa
2.) corpus spongiosum
3.) spongy urethra
sac-like glands that lie at the base of the bladder and release a fluid that forms part of semen, 60% of seminal fluid
Seminal Vesicles
donut-shaped gland that produces fluid that nourishes and help in the transport of the sperm
Prostate Gland
tiny pea-sized glands inferior to the prostate gland that produces thick, clear mucus that drains into the penile urethra, lubricant
Bulbourethral Glands (cowper glands)
mixture of sperm and secretions from glands
Semen
interstitial cells increase in number and size
Spermatogenesis
sequence of events in which a boy begins to produce male hormones and sperm cells
Male Puberty
GnRH is released from neurons in the?
Hypothalamus
secrete two hormones, referred to as gonadotropins because they influence the functions of the glands
Anterior Pituitary Gland