The Role of Insulin in the Human Body
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0:09 - 0:10When food is ingested,
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0:10 - 0:13it travels along the digestive tract
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0:13 - 0:14where it's broken down
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0:14 - 0:16into its component nutrients
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0:16 - 0:19in order to be absorbed into the bloodstream.
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0:20 - 0:22One such nutrient is glucose,
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0:22 - 0:24a simple sugar.
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0:24 - 0:26Glucose gets absorbed by the stomach
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0:26 - 0:29and intestines and then enters the bloodstream.
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0:30 - 0:31
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0:31 - 0:32It travels through the circulation
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0:32 - 0:33to all body cells.
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0:33 - 0:42
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0:42 - 0:45Once absorbed into the bloodstream,
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0:45 - 0:47glucose circulates, causing the blood sugar
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0:47 - 0:49level to rise.
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0:49 - 0:51An increased level of blood sugars,
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0:51 - 0:54sends a signal to the pancreatic beta cells,
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0:54 - 0:57which respond by secreting the hormone insulin
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0:57 - 0:59into the circulation.
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0:59 - 1:02
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1:02 - 1:04Insulin is necessary for glucose to reach
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1:04 - 1:07and be used by several important target
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1:07 - 1:09tissues throughout the body.
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1:09 - 1:12These include the liver, muscle,
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1:12 - 1:13an adipose tissue.
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1:13 - 1:14
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1:14 - 1:15Insulin is necessary
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1:15 - 1:17to keep blood glucose levels
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1:17 - 1:18stable in the body.
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1:18 - 1:19
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1:19 - 1:28
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1:28 - 1:30Glucose enters the cell
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1:30 - 1:33through a process called "facilitated diffusion."
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1:33 - 1:37
- Title:
- The Role of Insulin in the Human Body
- Description:
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Developed and produced by http://www.MechanismsinMedicine.com
Animation Description: This patient-friendly animation describes the main role of insulin in the human body.When food is ingested, it travels along the digestive tract where it is broken down into its component nutrients in order to be absorbed into the bloodstream. One such nutrient is glucose, a simple sugar.
Glucose gets absorbed by the stomach and intestines and then enters the bloodstream. It travels through the circulation to all body cells.
Once absorbed into the bloodstream, glucose circulates causing the blood sugar level to rise. An increased level of blood sugar sends a signal to the pancreatic beta cells, which respond by secreting the hormone insulin into the circulation.
Insulin is necessary for glucose to reach and be used by several important target tissues throughout the body. These include the liver, muscle, and adipose tissue. Insulin is necessary to keep blood glucose levels stable in the body.
Circulating insulin binds to specific insulin receptors located on the cell membrane of tissue cells throughout the body.
Upon binding, a signal is sent to the nucleus of the cell, instructing it to transport glucose channels to the cell surface. These channels allow glucose to enter the cell.
Glucose enters the cell through a process called facilitated diffusion.
- Video Language:
- English
- Duration:
- 01:50
Dawn Sonntag edited English subtitles for The Role of Insulin in the Human Body |