Macronutrients & Products: Food & Beverage
Learn the developments, processing and ingredients behind the daily available food and beverages produces by certain manufacturers along with the health implications and nutritional quality behind these products.
Food & Beverage Nutrition Fundamentals
Get the basics from nutritional data sciences released to the biochemical understanding for a more vast and flexibility in the knowledge of having to deal with nutritional quality whenever and wherever.
Basic Biochemistry Of Nutrients & Dietary Sources
Biochemical fundamentals and their reactions through metabolic processes with regards to Nutrients & Dietary Sources. How will these sources of sustenance react with our body and how will our body respond?
Metabolic Pathways: Energy Metabolism
Metabolic Disease & Disorders: Insight To The Major Issues
when we see an individual who struggles with his or her weight, there are key observations and factors related to the issue we must come to understand before taking part or initiating and health approach or protocol.
Fasting & Findings
With so much options for both Food & Beverages marketed and accessible, Its easy to get caught up in constantly feeding and unconsciously consuming when not hungry. What's the best way to give our body time to rest, recover and replenish itself. Find out the process here.
Biological Machines & Nature´s Regulators: Viruses, Bacteria & Fungi
Discover the interesting role behind a diverse and unique group of organic Kingdoms that contribute to the essential change and progress of our natural order and overall bio systems.
Breathing & Nutrition: Overlooked Combination of life
We look at how both breathing and nutritional consumption play a crucial and crucial role in not just better health and well being but also better movement.
Agrochemical & Agricultural Practices
We review, Analyse and look into the many aspect of agricultural practices and methods used in todays food and beverage systems, from the very grain that supplies our stores and fast food franchises, to the chicken feed and supply and the dairy and cheese that are extracted, treated and distributed to our store shelves.
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The digestive system is a sophisticated and vital network of organs and glands designed to transform the food we eat into energy and essential nutrients. These multiple systems are set in place and designed to operate transforming the energy consumed using the following complex process:
Mechanical Process: whereby breaking down the food into smaller, absorbable units via major organs.
Transitory Process: This usually takes place while the mechanical process is working through the ingested foods and liquids. Involving accessory organs that release enzymes and hormones to initiate the chemical process and aid in the digestion process.
Chemical Process: whereby the food broken down by mechanical process is then utilized and absorbed for the body to use for energy, growth, and cell repair.
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1. Major Organs and Their Functions
Mouth
- Function: The digestive process starts here. Food is mechanically broken down by chewing and mixed with saliva.
- Saliva: Contains enzymes like amylase that begin the chemical digestion of carbohydrates by converting starches into simpler sugars.
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Esophagus
- Function: A muscular conduit that transports chewed food (bolus) from the mouth to the stomach.
- Peristalsis: Rhythmic contractions move food down the esophagus, ensuring it reaches the stomach.
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Stomach
- Function: A muscular sac that continues the digestion process. It mixes food with gastric juices to form chyme, a semi-liquid substance.
- Gastric Juices: Include hydrochloric acid (HCl), which creates an acidic environment for enzyme activity, and pepsin, which breaks down proteins into peptides.
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Small Intestine
- Function: The primary site for digestion and nutrient absorption. It is divided into three sections:
- Duodenum: Receives bile from the liver and pancreatic juices containing enzymes.
- Jejunum and Ileum: Absorb nutrients into the bloodstream. Enzymes from the pancreas and bile from the liver further digest food here.
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Large Intestine
- Function: Absorbs water and electrolytes from the remaining indigestible food matter and forms feces. It comprises:
- Cecum: Receives material from the small intestine.
- Colon: Further absorbs water and salts.
- Rectum and Anus: Store and expel feces.
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2. Accessory Organs and Their Roles
Salivary Glands
- Function: Produce saliva, which contains amylase for carbohydrate digestion and helps in moistening food for easier swallowing.
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Liver
- Function: Produces bile, essential for fat digestion and absorption. It also processes nutrients absorbed from the small intestine and detoxifies harmful substances.
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Gallbladder
- Function: Stores and concentrates bile produced by the liver. Releases bile into the small intestine to aid in fat digestion.
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Pancreas
- Function: Produces digestive enzymes (like lipase, amylase, and proteases) and bicarbonate, which neutralizes stomach acid in the small intestine.
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3. Digestive Enzymes and Their Functions
- Amylase: Found in saliva and pancreatic juice; breaks down starches into sugars.
- Pepsin: Active in the stomach; breaks proteins into peptides.
- Lipase: Produced by the pancreas; breaks fats into fatty acids and glycerol.
- Trypsin and Chymotrypsin: Pancreatic enzymes that further digest proteins into smaller peptides.
- Lactase, Sucrase, and Maltase: Enzymes in the small intestine that break down lactose, sucrose, and maltose into simple sugars for absorption.
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4. Hormonal Regulation
- Gastrin: Stimulates the secretion of gastric acid in the stomach, aiding digestion.
- Secretin: Triggers the pancreas to release bicarbonate to neutralize stomach acid in the small intestine.
- Cholecystokinin (CCK): Stimulates bile release from the gallbladder and enzyme release from the pancreas.
- Ghrelin: Increases appetite and food intake, signaling hunger.
- Leptin: Regulates energy balance by inhibiting hunger and controlling fat storage.
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Importance and Purpose
The digestive system’s importance lies in its ability to break down complex food into simpler molecules that the body can absorb and use. Without this system, our bodies would not be able to obtain essential nutrients, leading to malnutrition and impaired bodily functions. The process ensures that energy, vitamins, minerals, and other nutrients are available for growth, repair, and maintaining vital functions.
Understanding the digestive system’s structure and function provides insights into how the body processes food and maintains health, laying the foundation for exploring nutritional biochemistry and its impact on overall well-being.
