Reproduction

v  Reproductive Systems

o   Male Reproductive System

v  Testes

o   Scrotum

o   Seminiferous tubules

·         Spermatogenesis

·         Sertoli cells

·         Interstitial cells

v  Paired accessory glands and duct system

o   Epididymis

o   Vas deferens

o   Paired seminal vesicles, single prostate gland, paired bulbourethral glands

o   Coagulating glands

·         Copulation plug

v  Copulatory organ

o   Penis

·         Corpora cavernosa

·         Glans penis

§  Os penis (baculum)

o   Female Reproductive System

v  Paired ovaries

o   Ova

o   Follicles

v  Pair of oviducts

v  Uterus/Uteri

v  Cervix

v  Vagina or urogenital sinus

v  External genitalia

o   Clitorus

·         Os clitorus

o   Labia majora and labia minora

o   Estrous Cycle

v  Estrus

v  Cycling

o   Monestrous

o   Polyestrous

o   Fertilization

o   Implantation

o   Placenta

v  Physically anchors fetus to uterus

v  Transports nutrients from circulation of mother to developing fetus

v  Excretes metabolites of fetus into maternal compartment

v  Produces hormones that regulate organs of mother and fetus

o   Marsupial placentas?

o   Types of placentas vary among mammal groups

v  Nondeciduous

v  Deciduous

o   Placental scar

v  Gestation

v  Parturition

o   Altricial

o   Precocial

v  Lactation

o   Mammae

o   Milk

v  Colostrum

v  Milk composition

v  Reproductive Variations

o   Delayed fertilization/ovulation

o   Delayed development

o   Delayed implantation

o   Embryonic diapause