Reproductive Flashcards
(49 cards)
2 modes of Reproduction
Sexual
Asexual
2 types of Sexual Reproduction
Internal
External
eg. Fission, budding, fragmentation, Parthenogenesis
Asexual
(absence of fertilization)
Parthenogenesis
- release gametes outside of body & then fertilized (eg. In frogs)
External fertilization
- transfer sperm from male to female by a special structure
Internal Fertilization
In anurans, 2 modes of reproduction:
Oviparity
Ovoviviparity
- or live birth; form eggs (nourished by food stored in egg) that hatch in the body of the female & the young are born alive
Ovoviviparity
- or egg laying; eggs are deposited outside of the body of the female
Oviparity
- principal organs of reproduction in males
Testes
consist of seminiferous tubules
Testes
produce sperm & the male sex hormone
Testes
male sex hormone
testosterone
(where sperms are formed)
seminiferous tubules
sperm production through meiosis
Spermatogenesis
- houses the testes in humans
Scrotum
in frog, while sperms are residing in the tubules, they are nourished by _____
Sertoli cells
stores sperm, propel sperm to penis, passageway for sperm to ductus/vas deferens
Epididymis
- coiled tubule merging w/ seminiferous tubules (in human)
Epididymis
- passageway of sperm to the ejaculatory duct
Vas deferens/sperm duct/Wolfian duct
(mesonephric duct in male frog)
Vas deferens/sperm duct/Wolfian duct
- in frogs, tiny ducts lying within mesorchium; has connections to the collecting tubules
Vas efferentia
3 types of acessory glands
Seminal vesicle
Prostate gland
Bulbourethral gland
- secrete seminal fluid containing substances
Accessory glands