The kidney of the frog is an opisthonephros. The kidneys are seen as two elongated, red organs in this image. The opisthonephros is the functional adult kidney in lampreys (cyclostomes), most fishes, and amphibians.
[1] It is formed from the extended mesonephros along with tubules from the posterior nephric ridge. [2] Kerr coined the term ' opisthonephros ' in 1919. [3] In 1949, Hyman.
Kidney is the most important excretory organ of frog. Frog mainly excretes urea, ammonia and water. In tadpole, kidney is pronephric but in adult kidney is mesonephric.
Tadpole is ammonotelic while adult is ureotelic. Kidney is a paired organ. It lies in the abdominal cavity inside the sub.
The structure of the frog kidney is similar to that of other vertebrates, including humans. The Functions of Frog Kidneys The main functions of the frog kidneys are to filter waste products from the blood, regulate the body's fluid balance, and excrete excess water and electrolytes from the body. In male frog the ureters convey the sperms and urine, and, hence, are called urinogenital ducts.
The ventral surface of each kidney has a yellow coloured adrenal or supra renal gland of endocrine function. To the anterior of each kidney are attached numerous finger-like fat bodies, a testis in male and ovary in female. Fat bodies are reserves for nourishment.
(iii) Urinary Bladder: It is large. The Urogenital system or Urogenital system of frog is comprised of: Excretory System Reproductive System Functionally, the excretory system is concerned with excretion of waste products and the reproductive system is concerned with producing progeny. In frogs, the reproductive organs are different in both sexes.
Frog Dissection Coloring When the abdominal cavity of the frog is opened, many organs of the digestive and urogenital systems can be observed. As you read the descriptions of the organs below, color them on the diagram. Leading from the mouth is a tube that connects to the stomach.
Color the esophagus pink. The largest organ is the liver, and it consists of multiple lobes. Color the right lobe.
Excretory System A pair of flat, red coloured elongated kidney present in the posterior part of body cavity on either side of vertebral column. Kidneys are mesonephric. A delicate white coloured ureter arise from the outer margin of kidneys, run backward to open into cloaca.
Urinary bladder is bilobed and thin-walled sac, for temporary storage of urine. In male frog, ureters also act as vas. The frog kidney filters out wastes from the blood and then passes them out of the body.
A frog's kidneys also help to replace water lost through the skin due to evaporation when out of the water. Frogs have a unique urinary system that is adapted for both aquatic and terrestrial life. The kidneys are the primary excretory organs in frogs, and they are responsible for filtering waste products from the blood and producing urine.
Explore histological sections of a frog's kidney stained with hematoxylin and eosin (HE).