Unit 4.2

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Unit 5- Anatomy and physiology

Unit 5.4 P4 M1 D1

P4- Explain the Physiology of Two Named Body Systems in Relation to Energy Metabolism in the Body
M1-Discuss the Roles of Energy in the Body

In this assignment I will be explaining the physiology of the cardiovascular system and the respiratory system. Whilst explaining the two body systems I will be explaining energy production, process of cellular respiration, the role of enzymes within these body systems, the way that these systems absorb food and the products of digestion.

The Cardiovascular System
The heart pumps the blood around the body through the blood vessels which is made of mostly veins and capillaries. The blood carries the dissolved oxygen around the bodily
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Heat energy can be released from the cells during respiration.
Cells get their energy from two main sources; this can be through the breakdown of glucose and the breakdown of triglycerides. Glucose molecules contain energy, the brain and red blood cells are high in glucose molecules.
Metabolism is the word for every chemical reaction that takes place within a living organism. The energy is released from the food by respiration.
Energy is stored within the bonds in the body that hold atoms and molecules all in one place, the cells can break down the glucose molecules, this is done through a chemical reaction. This can take place within the cytoplasm and it is then finished within the mitochondria, this is known as cellular respiration.
Anaerobic respiration
Anaerobic respiration is the chemical processes necessary for maintenance of life without the use of oxygen. This type of respiration occurs when there is not much oxygen left within the body for aerobic respiration to occur. Anaerobic respiration will be used when a person is running for a long time at a fast pace.
As well as taking place within humans anaerobic respiration takes place within plants when there is no oxygen present.

This is when the water molecules come from a higher concentration within the body and they then transfer into a region of low concentration, this happens through the partially permeable membranes within the
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