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Excretory Products and their elimination
Human urine is usually acidic because
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The sodium transporter exchanges one hydrogen ion for each sodium ion, in peritubular capillaries.
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Excreted plasma proteins are acidic
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potassium and sodium exchange generates acidity
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hydrogen ions are actively secreted into the filtrate
D.
hydrogen ions are actively secreted into the filtrate
The proximal tubule is the portion of nephron of the kidney which leads from the Bowman's capsule to the loop of Henle. It regulates the pH of the filtrate by exchanging hydrogen ions in the filtrate. Due to the H+ ions the human urine is usually acidic. Thus H+ are actively secreted into the filtrate is the correct option.
Choose the correctly matched pair.
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Inner Lining of salivary ducts - Ciliated epithelium
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Moist surface of buccal cavity - Flandular epithelium
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Tubular parts of nephrons - Cuboidal epithelium
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Inner surface of bronchioles - Squamous epithelium
C.
Tubular parts of nephrons - Cuboidal epithelium
Cuboidal epithelium is present in th tubular parts of nephron (PCT and DCT). It consists of short, cube -shaped cells with round nuclei located in the centre of the cell. These cells forms microvilli to increase the absorptive surface area of the cell.
Other correctly matched points are
Inner lining of salvasry ducts is lined by compound epithelium. Moist surface of bucaal cavity is lined by compound epithelium. Inner surface of bronchioles is lined by ciliated epithelium.
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Mock Test Series
Mock Test Series