Frog Reproductive System
தவளை இனப்பெருக்க மண்டலம்
The frog's reproductive efficiency is a masterclass in anatomical precision, where the kidneys double as conduits for male gametes.
The idea
Male frogs have testes attached to kidneys by the mesorchium, with vasa efferentia leading to the Bidder's canal. Females have ovaries that release ova into the cloaca, with external fertilization occurring in water.
Why it matters
It exists to ensure the continuation of the species through sexual reproduction and the production of offspring.
NEET lens
Focus on the pathway: Testes -> Vasa efferentia (10-12) -> Bidder's canal -> Urinogenital duct -> Cloaca. Remember, fertilization is external and occurs in water.
Clinical significance
Understanding the urogenital system of frogs is foundational for comparative anatomy and developmental biology, essential for studying organogenesis and reproductive toxicology.
Introduction
Frog reproductive system: testes in males (produce sperm), ovaries in females (produce eggs). Fertilization is external in water.
Core concept
Male: paired testes (yellowish, attached to kidney), vasa efferentia → kidney → urinogenital duct → cloaca → outside. Female: paired ovaries (large, lobed), oviduct → ovisac → cloaca → outside. Sperm and eggs released simultaneously in water during amplexus.
Go deeper
The urinogenital duct in male frog carries both urine and sperm — a plesiomorphic (ancestral) feature. In higher vertebrates, these systems are separate.
From Class 10
Frogs reproduce sexually. The reproductive system produces gametes and facilitates fertilization.