Unit 5 Assignment 2
P4 I will be explaining the physiology of two named body systems in relation to energy metabolism in the body.
The Digestive System
It’s the digestive system’s job to convert complex molecules into more simple molecules.
Carbohydrates are mostly turned into simple sugars and glucose and is then mixed into the bloodstream to provide energy. Excess carbohydrates are kept/ stored in the liver in the form of glycogen or changed/ converted into fat. Glycogen is changed/ converted into glucose again when energy is needed.
Glycerol is useful for energy or it further converts fatty acids into a type of fat that is able to be stored.
Fatty acids play a role in the internal respiration to release energy by leading the process.
Protein is converted into amino acids.
The Cardiovascular System
The cardiovascular system is responsible for carrying what is required for energy to the cells through the body’s bloodstream. The system includes the heart and the blood vessels.
Pulmonary circulation means that it’s the heart’s job to pump oxygen-poor blood to the lungs, so that oxygen can be received , and causes the blood to be oxygen rich. The blood then flows to the heart again and into the left ventricle of the heart so it can be circulated through the rest of the body and give oxygen rich cells which is needed to produce energy as well as for cellular respiration.
The cardiovascular and respiratory system work together to provide the body with oxygen. oxygen is taken in by the lungs and defuses through the alveoli walls into the blood stream and the heart transports it around the body. the body has a constent delivery of desolved oxygen so cellular resperation can take place.
The heart is responsible for pumping blood with nutrients around the whole body in order for cells to be able to produce energy for the process of respiration.
In addition, energy is also needed to flow in the blood around the body as ATP (Adenosine tri-phosphate).
M1 I will be discussing the role of energy in the body
Humans require energy to be able to function and perform tasks that we do such as using our muscles for activities like walking. We get energy from our environment and the food that we eat. We need energy for survival and for growth such as by creating new cells and for blood to be circulated around our bodies.
If we didn’t have energy, we would be unable to function successfully. Energy takes oxygen in our bodies and allows it to be circulated in our bloodstream in our bodies.
Humans are warm blooded therefore we are only able to digest what we’ve eaten as long as our body is at a specific temperature, this is an example of where energy is needed.
Energy can be from fats, proteins, and carbohydrates as well as proteins in food we consume. Fat provides more energy than carbohydrate or proteins.
Energy needed by humans is separated in two sectors. This includes basal metabolic needs and energy needed. Basal metabolic rate is when heat is removed from our bodies when we are resting and when our body temperature is normal.
The average adult man needs about 2500 calories each day whilst the average woman needs around 2000.
When we consume food that provides us with more energy or calories than we require, the extra energy is kept/ stored as fat in the body , and we may put on weight. In cases where not enough food is consumed, the fat that the body has stored fat will provide energy, and we may loose weight loss will. energy requirements of the body.
Metabolism is the chemical processes of cells. Catabolism is the process of complex molecules are broken down to make simpler molecules and energy. When simple molecules are made into more complex molecules, this is called anabolism. An anabolic process needs energy. Both processes of metabolism need to happen at the same time due to catabolism providing necessary energy for the process of anabolism.
The body and cells require regular energy for many of reasons such as for mechanical work e.g. energy is needed for the movement of muscles. Energy is needed for molecular transport or in other words, energy is needed for molecules to move from areas of low concentration to those of higher concentration.
In conclusion, energy is very important for many reasons and plays an active role in humans being able to survive and function.
D1 I will be analysing how two body systems interrelate to perform a named function/functions