{"id":576,"date":"2017-10-26T14:58:48","date_gmt":"2017-10-26T14:58:48","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/sunynutrition\/?post_type=chapter&p=576"},"modified":"2017-11-13T20:21:01","modified_gmt":"2017-11-13T20:21:01","slug":"7-31-muscle-macronutrient-metabolism","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/atd-herkimer-nutrition\/chapter\/7-31-muscle-macronutrient-metabolism\/","title":{"raw":"7.31 Muscle Macronutrient Metabolism","rendered":"7.31 Muscle Macronutrient Metabolism"},"content":{"raw":"
\r\n\r\nCompared to extrahepatic tissues as a whole, in the muscle the following pathways are not performed or are not important:\r\n\r\nFatty acid synthesis\r\n\r\nKetone body breakdown\r\n\r\nThese pathways are crossed out in the figure below.\r\n
\r\n\r\n[caption id=\"\" align=\"aligncenter\" width=\"1120\"]\"\" Figure 7.311 The metabolic pathways that are not performed or important in the muscle, compared to extrahepatic tissues as a whole1<\/sup>[\/caption]\r\n\r\n<\/div>\r\nRemoving those pathways, the following metabolic pathways make up the muscle metabolic capability:\r\n\r\nGlycogen synthesis and breakdown\r\n\r\nGlycolysis\r\n\r\nProtein synthesis and breakdown\r\n\r\nTriglyceride synthesis and breakdown\r\n\r\nFatty acid breakdown\r\n\r\nLactate synthesis\r\n
\r\n\r\n[caption id=\"\" align=\"aligncenter\" width=\"1125\"]\"\" Figure 7.312 Muscle metabolic capability1<\/sup>[\/caption]\r\n\r\n<\/div>\r\nMuscle is a major extrahepatic metabolic tissue. It is the only extrahepatic tissue with significant glycogen stores. However, unlike the liver, the muscle cannot secrete glucose after it is taken up (no glucose-6-phosphatase). Thus, you can think of the muscle as being selfish with glucose. It either uses it for itself initially or stores it for its later use.\r\n\r\nReferences & Links<\/b>\r\n\r\n1. http:\/\/en.wikipedia.org\/wiki\/File:CellRespiration.svg\r\n\r\n<\/div>","rendered":"
\n

Compared to extrahepatic tissues as a whole, in the muscle the following pathways are not performed or are not important:<\/p>\n

Fatty acid synthesis<\/p>\n

Ketone body breakdown<\/p>\n

These pathways are crossed out in the figure below.<\/p>\n

\n
\"\"<\/p>\n

Figure 7.311 The metabolic pathways that are not performed or important in the muscle, compared to extrahepatic tissues as a whole1<\/sup><\/p>\n<\/div>\n<\/div>\n

Removing those pathways, the following metabolic pathways make up the muscle metabolic capability:<\/p>\n

Glycogen synthesis and breakdown<\/p>\n

Glycolysis<\/p>\n

Protein synthesis and breakdown<\/p>\n

Triglyceride synthesis and breakdown<\/p>\n

Fatty acid breakdown<\/p>\n

Lactate synthesis<\/p>\n

\n
\"\"<\/p>\n

Figure 7.312 Muscle metabolic capability1<\/sup><\/p>\n<\/div>\n<\/div>\n

Muscle is a major extrahepatic metabolic tissue. It is the only extrahepatic tissue with significant glycogen stores. However, unlike the liver, the muscle cannot secrete glucose after it is taken up (no glucose-6-phosphatase). Thus, you can think of the muscle as being selfish with glucose. It either uses it for itself initially or stores it for its later use.<\/p>\n

References & Links<\/b><\/p>\n

1. http:\/\/en.wikipedia.org\/wiki\/File:CellRespiration.svg<\/p>\n<\/div>\n\n\t\t\t

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Candela Citations<\/h3>\n\t\t\t\t\t
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