Functions of Kidney in Frog

The kidney is an important organ in the excretory system of frogs. It plays a vital role in maintaining the internal environment of the body and regulating various physiological processes. The functions of the kidney in frogs include excretion, osmoregulation, and haemopoiesis in larva.

1. Excretion:
The primary function of the kidney in frogs is excretion. The kidney filters waste products from the blood and removes them from the body. The waste products, such as urea, uric acid, and ammonia, are produced as a result of metabolic processes in the body. These waste products are toxic and need to be eliminated to maintain homeostasis. The kidney filters the blood and forms urine, which is then excreted through the cloaca.

2. Osmoregulation:
Frogs are amphibians and can live in both terrestrial and aquatic habitats. This requires them to maintain proper water and salt balance in their bodies. The kidney helps in osmoregulation by regulating the water and salt content of the body fluids. It filters out excess water and salts from the blood and reabsorbs the necessary ones to maintain the proper balance. This is crucial for the frogs to survive in different environments with varying water concentrations.

3. Haemopoiesis in Larva:
During the larval stage of frogs, the kidney also plays a role in haemopoiesis. Haemopoiesis is the process of blood cell formation. In the tadpole stage, the kidney produces red blood cells, which are necessary for oxygen transport and other physiological functions. As the tadpole undergoes metamorphosis and transforms into an adult frog, the role of the kidney in haemopoiesis diminishes.

In conclusion, the kidney in frogs has multiple functions, including excretion, osmoregulation, and haemopoiesis in larva. It is an essential organ in maintaining the internal environment of the frog's body and ensuring its survival in various habitats.