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Histology Art (MT 30 – I) 2022 4 years, 1 month ago The urinary system also plays a crucial role in our body. Its organs filter blood to remove toxins and regulates the chemical composition, volume, and electrolyte balance of the blood. Moreover, the waste is removed through urine (a waste product), then stored and excreted. The organs that make up the urinary system are the kidneys, renal pelvis, ureters, bladder, and urethra.
The 𝐥𝐮𝐦𝐢𝐧𝐚 𝐨𝐟 𝐜𝐨𝐧𝐯𝐨𝐥𝐮𝐭𝐞𝐝 𝐭𝐮𝐛𝐮𝐥𝐞𝐬 in the kidney is lined with 𝐬𝐢𝐦𝐩𝐥𝐞 𝐜𝐮𝐛𝐨𝐢𝐝𝐚𝐥 𝐞𝐩𝐢𝐭𝐡𝐞𝐥𝐢𝐮𝐦. This kind of epithelial tissue is 𝘴𝘱𝘦𝘤𝘪𝘢𝘭𝘪𝘻𝘦𝘥 𝘧𝘰𝘳 𝘥𝘪𝘧𝘧𝘶𝘴𝘪𝘰𝘯 𝘢𝘯𝘥 𝘢𝘣𝘴𝘰𝘳𝘱𝘵𝘪𝘰𝘯. The movement of water and salts enters and exits the kidney tubules. The simple cuboidal epithelium facilitates the diffusion of these substances.
𝐌𝐀𝐋𝐄 𝐔𝐑𝐄𝐓𝐇𝐑𝐀
Epithelia of different types line the male urethra, usually 𝐩𝐬𝐞𝐮𝐝𝐨𝐬𝐭𝐫𝐚𝐭𝐢𝐟𝐢𝐞𝐝 𝐨𝐫 𝐬𝐭𝐫𝐚𝐭𝐢𝐟𝐢𝐞𝐝 𝐜𝐨𝐥𝐮𝐦𝐧𝐚𝐫, 𝐭𝐫𝐚𝐧𝐬𝐢𝐭𝐢𝐨𝐧𝐢𝐧𝐠 𝐭𝐨 𝐬𝐭𝐫𝐚𝐭𝐢𝐟𝐢𝐞𝐝 𝐬𝐪𝐮𝐚𝐦𝐨𝐮𝐬 𝐞𝐩𝐢𝐭𝐡𝐞𝐥𝐢𝐮𝐦.
𝐅𝐄𝐌𝐀𝐋𝐄 𝐔𝐑𝐄𝐓𝐇𝐑𝐀
The female urethra is shorter and is initially lined by 𝐭𝐫𝐚𝐧𝐬𝐢𝐭𝐢𝐨𝐧𝐚𝐥 𝐞𝐩𝐢𝐭𝐡𝐞𝐥𝐢𝐮𝐦 𝐭𝐡𝐚𝐭 𝐭𝐫𝐚𝐧𝐬𝐢𝐭𝐢𝐨𝐧𝐬 𝐭𝐨 𝐬𝐭𝐫𝐚𝐭𝐢𝐟𝐢𝐞𝐝 𝐬𝐪𝐮𝐚𝐦𝐨𝐮𝐬 𝐞𝐩𝐢𝐭𝐡𝐞𝐥𝐢𝐮𝐦.
The one on the illustration that I made is the female urethra with stratified squamous epithelium.
Histology Guide (n.d.). Chapter 16 – Urinary System. Retrieved from https://histologyguide.com/slidebox/16-urinary-system.html
Indiana University (2016). Urinary System, The Urethra. Retrieved from https://vmicro.iusm.iu.edu/hs_vm/docs/lab11_6.htm
John Hopkins Medicine (n.d.). Anatomy of the Urinary System. Retrieved from https://www.hopkinsmedicine.org/health/wellness-and-prevention/anatomy-of-the-urinary-system#:~:text=The%20urinary%20system's%20function%20is,and%20converts%20them%20to%20energy.
Simple Cuboidal Epithelium: Location, Structure & Function. (2016, February 28). Retrieved from https://study.com/academy/lesson/simple-cuboidal-epithelium-location-structure-function.html.