SC121 Human Anatomy and Physiology I Oakland University Discussion

Initial post:

A nutrient is a substance in food that is used by the body to promote normal growth, maintenance, and repair. During metabolism, substances inside body cells are constantly built up or broken down. Let’s start this week’s discussion with the definition and comparison of glycogenesis, glycogenolysis, gluconeogenesis, and lipogenesis. Which is (are) likely to be occurring (1) shortly after a carbohydrate-rich meal and (2) just before waking up in the morning?

Reply post:

According to the text, “Glycogenesis is the synthesis of glycogen; glycogenolysis is its hydrolysis (breakdown to glucose); and gluconeogenesis is the synthesis of glucose from noncarbohydrates, especially fats and proteins.” (Saladin, 2020 p. 641). It also says, “Synthesizing fats from other types of molecules is called lipogenesis,” (Saladin, 2020 p. 993). It could be known as triglyceride synthesis, as well. Now, glycogenesis is more likely to happen after eating a meal very rich in carbs, while gluconeogenesis is more likely to happen right before you wake up in the morning. NIH writes, “Lipogenesis encompasses the processes of fatty acid synthesis and subsequent triglyceride synthesis, and takes place in both liver and adipose tissue.” It’s also likely for lipogenesis to happen after eating a lot of carbs in one sitting.