The PCT's role is selective reabsorption, actively transporting glucose, amino acids, vitamins, and hormones back to the blood, along with 85% of sodium chloride and water. Its cells are adapted with microvilli for increased surface area and numerous mitochondria for energy.
The proximal convoluted tubule (PCT) is responsible for selective reabsorption, returning all glucose, amino acids, vitamins, and hormones to the blood via active transport. It also reabsorbs about 85% of sodium chloride and water. Its cells have microvilli to increase surface area and many mitochondria to power active transport.
| Front | Describe the role of the proximal convoluted tubule & explain how the cells of the proximal convoluted tubule are adapted for their function |
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| Back | Selective reabsorption:
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