Horse

Brain

Male

Female

Ovary

Hypothalamus

GnRH

Anterior Pituitary Gland

Follicle Stimulating Hormone (FSH)

Lutenizing Hormone (LH)

Copulation

Estrus/ Heat

Infundibulum

Oviducts

Fertilization/Conception

Uterine Horns

Ovum / Egg

Follicles

Corpus Luteum

Uterus

Endometrium

Cervix

Vagina

Vulva

Vestibule

Labia

Clitoris

Scrotum

Testes / Testicles

Seminiferous Tubules

Epididymis

Vas Deferens

Accessory Glands

Ampulla

Urethra

Seminal Vesicles

Prostate Gland

Cowper's or Bulbourethral Gland

Sheath

Penis

Spermy

Urinates frequently

Allows stallion to smell & bite

Extends hind legs, tail to side, lowered rump

Elongated & swollen vulva "winking"

Should be teased by stallion for accurate detection

Testosterone

Ovulation

Progesterone

Estrogen

Prostaglandin

Kills CL, then recycles

Implantation

Gestation 337 days

Oxytocin / Relaxin

Parturition

Estrous Cycle

Baby