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Mammalogy

Modern Mammal Reproduction

QuestionAnswer
Male Anatomy Testes, epididymis, vas deferens, seminal vesicles, urethra, penis, scrotum
Position of Testes In abdominal cavity; Seasonally descended; Permanently descended
Spermatogenesis occurs in... Seminiferous tubule
Leydig cells Produce testosterone
Semen's purpose is... For sperm nourishment; Lubercent; Decreasing vaginal acidity
Female Reproductive Purposes... Produce ova; Receive sperm; Protect and nourish embryo; Birth young; Nourish offspring
Female Anatomy Ovaries, ova and hormones, oviducts/Fallopian tubes, uterus, cervix, vagina, vulva
Female Reproduction FSH to enlarge follicle; Follicle to surface; LH causes rupture; Ovum passes oviduct
Mammalian Uteri Types Didelphous; Duplex; Bipartite; Bicornuate; Simplex
Uteri Type; Didelphous Marsupials; Paired uteri; Paired Oviducts; Paired Vaginal canals
Uteri Type: Duplex Eutherian; Two uteri; Two cervixes; One vagina; Lagomorphs and rodents
Uteri Type: Bipartite Eutherian; Two uteri; One cervix; Carnivores and cetaceans
Uteri Type; Bicornuate Eutherian; Most common; Uterian horns fused distally and separate proximally; Insectivores, bats, artiodactyls, perissodactyl
Uteri Type; Simplex Eutherian; No separations; Primates, anteaters, pangolins
Placenta Functionally produces hormones to regulate mother's immune systems not to abort fetus; Choriovitelline and Chorioallantioc Types
Placenta Type: Choriovitelline Marsupials; Weak connective tissue so weak nutrient and waste exchange; Enlarged yolk sac; Short gestation; Long lactation; Altrical young
Placenta Type: Chorioallantoic Eutherians and Bandicoots; Strong connection to uterus; Reduced yolk sac; High vascularized; Long gestation; Short lactation; Four types based on villi connection
Estrous Cycle Brief period of receptivity shortly before and after ovulation; Monestrous and Polyestrous Types
Estrous Cycle; Monestrous Once per year; Carnivores
Estrous Cycle: Polyestrous Several per year; Rabbits
Ovulation Spontaneous; Induced; Delayed Ferilization
Ovulation: Spontaneous Egg ovulation occurs before copulation
Ovulation: Induced Copulation occurs before egg ovulation
Ovulation: Delayed Fertilization Copulation occurs before hibernation, and fertilization occurs after hibernation
Ovulation: Delayed Development Copulation, Fertilization, slow development.
Ovulation: Delayed Implantation Ovulation, Copulation, Fertilization, Delayed blastocyst implantation
Lactation Estradiol and progesterone, birth drops estradiol, causes prolactin and stimulates motherhood, nipple stimulation to pituitary gland for oxytocin and have alveoli eject milk
Created by: LionsandGiants