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The amphibian bladder is usually highly distensible; among some land-dwelling species of frogs and salamanders, it may account for 20%–50% of total body weight. [44] Urine flows from the kidneys through the ureters into the bladder and is periodically released from the bladder to the cloaca. [45]
Frogs have glandular skin, with secretions ranging from distasteful to toxic. Their skin varies in colour from well-camouflaged dappled brown, grey and green to vivid patterns of bright red or yellow and black to show toxicity and ward off predators. Adult frogs live in fresh water and on dry land; some species are adapted for living ...
Below this are a number of small glands secreting components of the seminal fluid. The final portion of the duct also receives ducts from the kidneys in most species. [21] In amniotes (mammals, birds, and reptiles), the archinephric duct has become a true vas deferens, and is used only for conducting sperm, never urine. As in cartilaginous fish ...
In recent years, these approaches have played in important role in studies of human disease genes. The mechanism of action for several genes mutated in human cystic kidney disorders (e.g. nephronophthisis) have been extensively studied in Xenopus embryos, shedding new light on the link between these disorders, ciliogenesis and Wnt signaling. [25]
The bladder is an organ that stores urine until it is released from the body. Several conditions can affect the bladder including urinary tract infections, bladder stones, bladder cancer, overactive bladder, cystitis, interstitial cystitis, abscess, fistula, and urinary incontinence. [4] [5] [1]
Swim Bladder Disease: Common in fish like goldfish and bettas, swim bladder issues can make it difficult for them to swim properly. Treatment costs are generally minimal, around $50 to $100 for ...
The kidneys of snakes are elongated, cylindrical [53] [50] and lobulated. [52] Turtles and some lizards have urinary bladder [50] that opens into the cloaca [54] but snakes and crocodiles do not have it. [50] Compared with the metanephros of birds and mammals, the metanephros of reptiles is simpler in structure. [21]
Image credits: girlfr0g They have adapted to surviving in extreme weather conditions. Like all amphibians, frogs are cold-blooded, meaning their body temperatures change with the temperature of ...
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