The Lipogenesis

Lipids may follow one of several pathways during metabolism. Glycerol and fatty acids follow different pathways. Source: OpenStax Anatomy and Physiology OpenStax Anatomy and Physiology When glucose levels are plentiful, the excess acetyl CoA generated by glycolysis can be converted into fatty acids, triglycerides, cholesterol, steroids, and bile salts. This process, called lipogenesis, creates lipids … Continue reading The Lipogenesis

What is Lipolysis?

During fatty acid oxidation, triglycerides can be broken down into acetyl CoA molecules and used for energy when glucose levels are low.Source: OpenStax Anatomy and Physiology OpenStax Anatomy and Physiology To obtain energy from fat, triglycerides must first be broken down by hydrolysis into their two principal components, fatty acids and glycerol. This process, called … Continue reading What is Lipolysis?

The Lipid Metabolism

A triglyceride molecule (a) breaks down into a monoglyceride (b). Source: OpenStax Anatomy and Physiology OpenStax Anatomy and Physiology Fats (or triglycerides) within the body are ingested as food or synthesized by adipocytes or hepatocytes from carbohydrate precursors. Lipid metabolism entails the oxidation of fatty acids to either generate energy or synthesize new lipids from … Continue reading The Lipid Metabolism

The Krebs Cycle/Citric Acid Cycle/Tricarboxylic Acid Cycle

During the Krebs cycle, each pyruvate that is generated by glycolysis is converted into a two-carbon acetyl CoA molecule. The acetyl CoA is systematically processed through the cycle and produces highenergy NADH, FADH2, and ATP molecules. Source: OpenStax Anatomy and Physiology OpenStax Anatomy and Physiology The pyruvate molecules generated during glycolysis are transported across the … Continue reading The Krebs Cycle/Citric Acid Cycle/Tricarboxylic Acid Cycle

Mechanical Digestion in the Small Intestine

Segmentation separates chyme and then pushes it back together, mixing it and providing time for digestion and absorption.Source: OpenStax Anatomy and Physiology OpenStax Anatomy and Physiology The movement of intestinal smooth muscles includes both segmentation and a form of peristalsis called migrating motility complexes. The kind of peristaltic mixing waves seen in the stomach are … Continue reading Mechanical Digestion in the Small Intestine

What is Gluconeogenesis?

Gluconeogenesis is the synthesis of glucose from pyruvate, lactate, glycerol, alanine, or glutamate. Source: OpenStax Anatomy and Physiology What is Gluconeogenesis? (OpenStax Anatomy and Physiology) Gluconeogenesis is the synthesis of new glucose molecules from pyruvate, lactate, glycerol, or the amino acids alanine or glutamine. This process takes place primarily in the liver during periods of … Continue reading What is Gluconeogenesis?