Meiosis, Development and Aging Flashcards
Complex multi-step process that is complete in 24 hours
Fertilization
- The sperm from a male meets an ovum from a female and forms a zygote
- The first cell that a lead to development of a new individual is a fetilized ovum
Zygote
It forms when a _________ form a male and an _________ (also called an egg cell) from a female joint.
sperm
oocyte
The point in which pregnancy begins and leads to a ___day journey for a female
280 day
Sperm and oocyte are ________, or sex cells
Gametes
Paired structures, called _________, where the sperm and oocyte are manufactured:
Gonads
Male Gametes:
The _____________ are packed into paired, oval organs called testes.
Seminiferous Tubules
Also passes through the epididymis and ductus deferentia, where they mature before exiting the body through the urethra during sexual intercourse.
Male Gametes
Originates in the ovaries
Female Gametes
The female sex cells develop in paired organs in the abdomen
Ovaries
The uterine tube carries the oocyte into a muscular, saclike organ
Uterus or Womb
Oocytes are ____________
Female gametes
Female Gametes: Each month after puberty, one vary releases an oocyte into a uterine tube.
The oocyte then moves to the uterus for implantation or __________
Expulsion
- Packed, paired, oval organs of seminiferous tubules
- Male Gonads
Testes
- Lie outside the abdomen within a sac
- This location keeps the testes cooler than the rest of the body for the development of sperm.
Scrotum
A tightly coiled tube in which sperm cells mature and are stored.
Epididymis
Epididymis continues to another tube
ductus deferens
Tube that carries sperm and urine out of body through the penis
Urethra