 How is glucose absorbed in the small intestine? LUMEN EPITHELIAL CELL BLOOD CAPILLARY.

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Presentation transcript:

 How is glucose absorbed in the small intestine? LUMEN EPITHELIAL CELL BLOOD CAPILLARY

 How is glucose absorbed in the small intestine? LUMEN EPITHELIAL CELL BLOOD CAPILLARY

 How is glucose absorbed in the small intestine? LUMEN EPITHELIAL CELL BLOOD CAPILLARY Sodium- potassium pump

 How is glucose absorbed in the small intestine? LUMEN EPITHELIAL CELL BLOOD CAPILLARY Sodium- potassium pump Actively pumps sodium ions out of the cell into the blood.

 How is glucose absorbed in the small intestine? LUMEN EPITHELIAL CELL BLOOD CAPILLARY Sodium- potassium pump Actively pumps sodium ions out of the cell into the blood. Sodium (low) Sodium (High)

 How is glucose absorbed in the small intestine? LUMEN EPITHELIAL CELL BLOOD CAPILLARY Sodium- potassium pump Actively pumps sodium ions out of the cell into the blood. Sodium (low) Sodium (High) Potassium

 How is glucose absorbed in the small intestine? LUMEN EPITHELIAL CELL BLOOD CAPILLARY Glucose-Sodium co-transporter Sodium moves down concentration gradient by facilitated diffusion Sodium (low conc.) Sodium (High) Potassium Sodium (High)Glucose (low) Glucose (High)

 How is glucose absorbed in the small intestine? LUMEN EPITHELIAL CELL BLOOD CAPILLARY Glucose-Sodium co-transporter Glucose moved into cell at the same time along with the sodium Sodium (low conc.) Sodium (High) Potassium Sodium (High)Glucose (low) Glucose (High)

 How is glucose absorbed in the small intestine? LUMEN EPITHELIAL CELL BLOOD CAPILLARY Glucose carrier Glucose moves down concentration gradient and exits cell into blood by facilitated diffusion Sodium (low conc.) Sodium (High) Potassium Sodium (High)Glucose (low) Glucose (High) Glucose (low)