The Process of Digestion

Energy is expended in a number of different ways such as the stated above; resting metabolic rate, thermic effect of activity, thermic effect of feeding and adaptive thermogenesis. An individual’s energy balance is the balance of calories consumed through eating and drinking compared to calories burned through physical activity, what an individual drinks and eat is energy in. what an individual burns though physical activity is energy out. Body weight is maintained and stable in the state of energy balance, the chemical bonds of carbohydrates, proteins and fats in food contain chemical energy which is then transformed in the human body in multiple metabolic processes to cellular energy, heat or stored energy. An individual’s burns a certain number of calories just by breathing air and digested food. They also burn a certain number of calories through their daily routine, an important part of maintaining energy balance is the amount of physical activity an

Energy metabolism comes in different types such as Anabolism and Catabolism energy. They all make sure that energy breaks down

Metabolism is the sum of all chemical reactions that take place in the body and how fast the body utilizes the calories that we put into it. Body weight increases and decreases based on the amount of calories put in and the amount of energy we burn.

Metabolism is a chemical process that converts fuel from food into energy needed for the body’s activities. For example, thinking, running and jumping etc. are all an example of the bodies activities.

In our bodies we need energy so that we could do things that are possible such as move our muscles, talk and all the other things that we do. Without energy all humans would be useless not being able to do anything. Energy is needed to extract the oxygen from the areas in our bodies and diffuse it into our bloodstream. Supplying enough energy to support the functions of the body in a daily basis is one of the main reasons for food. This energy comes from the fats, carbohydrates, and proteins in the food you eat. Of the three, fat is the most concentrated source of energy. Energy requirements are normally put in terms of calories. The energy requirement for a person is spilt into two parts: basal metabolic requirements and energy required for activity. Basal metabolic rate (BMR) is the heat taken from the body at rest when temperature is normal. An average person requires 2000-2500 Calories per day while the difference for a large man doing heavy work may require up to 6000 Calories per day. When you choose foods that have more energy, or Calories than you need, the excess energy is stored as fat in the body which will results in putting on some weight. If too little food is eaten to meet energy demands, the body's stored fat serves as an energy source and this will result in weight loss. Your weight stays about the same if the energy from food matches the energy requirements of the body. As warm blooded

D2 how the digestive system, cardiovascular system and respiratory system all link together How the digestive system works? Food moves through the GI tract. Digestion starts in the mouth with chewing and finishes in the small intestine. As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules.

Energy in the human body comes in two forms, potential energy and free energy (Schlenker, E. D. 2011). Free energy is used in making the muscles move and preform while potential energy is stored in a chemical compound for future use. The reaction for these compounds are regulated by hormones, enzymes and coenzymes that help determine how fast or slow our metabolism runs. Energy is stored within our bodies in three forms,

“Metabolism is the set of chemical reactions that happen in living organisms to maintain life. These processes allow organisms to grow and reproduce, maintain their structures, and respond to their environments” (Metabolism). Metabolism breaks down the food that we eat, transforming it into energy for our bodies. Metabolism is broken down into two categories Anabolism and Catabolism, which help aid in the chemical reaction process. Specific proteins in the body control the chemical reactions of metabolism, and each chemical reaction is coordinated with other body functions (Dowshen). Metabolism is a constant process that begins when we're born and ends when we die. It is a vital process for all life not just humans, and

Reduced saliva can bring discomfort and may contribute to a much slower initial digestion process. Having reduce saliva could may your mouth quite dry. Dry mouth can cause swelling and may be uncomfortable. In addition, germs thrive in this type of environment, which typically presents with bad breath. Also, in terms of initial stages of digestion, saliva helps begin the chemical breakdown of carbohydrates in the mouth, with reduced saliva this process may take longer and may not be as

Our bodies developed complex structure of physiological processes, to control that organism getting enough macro- and micro- nutrients from food. The physiological mechanism control the balance between amount of food we eat and amount of energy we consume on day to day basis. (Bender2014,1)

as the colon is the distal part of our digestive system, so having some different pysiological features rather than upper GI tract as:-

Most of us think that the process that takes place in our stomach after we eat a meal it’s very easy and simple when the truth is that it’s a very complex process. The process of digestion starts even with the simple thought of food, after that the body starts preparing the stomach for the food that is about to be eaten. The food goes then through our mouth into our stomach, where is digested and dumped into the intestines to be thrown away. In order for our stomach to digest the food completely, it has to go through three different stages and that’s where the process of digestion occurs. The first stage it’s called cephalic phase, in this stage or phase, the brain perceives any sight, smell or taste of food, sending impulses to the brainstem

These four biomolecules are metabolized by the animal body. Each biomolecule is broken down in a different process. The end result of each process is the creation of usable energy for the body. This energy is used to work and generate other chemical reactions that help the body move and think. Carbohydrates, lipids, proteins and nucleic acids each provide energy to different places within the body that, in turn, stimulate other chemical reactions to occur, creating a chain reaction of chemical reactions throughout the body. The metabolization of these major

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The primary function of the digestive system is to transfer nutrients, water, and electrolytes from the food consume into the body’s internal environment. The ingested food is essential as an energy source, or fuel, from which the cells can generate ATP to carry out their particular energy-dependent activities such as contraction, transport, synthesis, secretion and even renewal of body tissues. Three primary categories of food ingested by humans which are carbohydrates, proteins and fats emerge as large molecules. These large molecules cannot cross plasma membranes intact to be absorbed from the lumen of the digestive tract into the blood or lymph; hence, it must undergo degradation in size (Sherwood, 2013). This