1. Anatomy and Physiology Unit 5 Sophie Bevan

2. Objectives
Explain the physiology of 2 named body systems in relation to energy metabolism in the body (P4)
Discuss the role of energy in the body (M1)

3. Objectives
Analyse how two body systems interrelate to perform a named function (D1)
Cardiovascular
Respiratory
Digestive

4. Energy Equation
C6H12O6 + 6O2 = 6 CO2 + 6 H20 + Energy Glucose + Oxygen = Carbon Dioxide + W Water + Energy

5. Following a meal, how do the digestive system and cardiovascular system interrelate to provide the body with energy?
In other words, how do you get food in to your body, convert it to something useful and then store or use it?

6. Resources: Digestive Digestive – moodle powerpoints
Movement of food through body, role of each organ
Enzymes homework and A3 overview
Metabolism: Catabolism and anabolism
Ingestion, digestion, absorption, egestion
ATP, glucose, storage of food in the body, calories
The role of the digestive system in energy metabolsim

7. Resources: Cardiovascular
Cardiovascular – moodle powerpoints
Role of blood in transport of substances and gases
Role of cardiovascular organs
A3 overview
Aerobic respiration and the use of oxygen
Heart as a pump blood
Cardiac output
How CV system contributes to energy production

8. PEEing Introduce essay PEE in each paragraph
Subheadings for each system
Research in essay – reference
Sumarise essay with conclusion

9. Other Info
You will naturally make links with a variety of systems as you progress in your work
E.g : Respiratory system to get rid of waste gas products
E.g : Hormones travelling around in your blood; insulin

10. Digestive System (Recap)
The digestive system is responsible for taking in food and water and, using enzymes, breaking up complex molecules into simple soluble materials that are capable of passing into the adjacent capillaries of the cardiovascular system

11. Cardiovascular System: Introduction to Energy
The cardiovascular system transports these simple materials to the liver and body cells via the bloodstream, driven by the pumping action of the heart

12. Respiratory System: Introduction to Energy
At the same time, the respiratory system constantly refreshes lung oxygen and disposes of waste products (such as CO2 and H20) through the process of breathing.
Dissolved O2 passes through the thin alveolar walls into the bloodstream and is transported to cells.

13. Respiratory System and Energy: Introduction
Body cells thus have a constant delivery of raw materials, such as glucose and other nutrients dissolved in oxygen, so that the (catabolic) breakdown process of glucose oxidation can take place and release energy to do work.
This takes place initially in the cytoplasm and is completed in the mitochondria. The released energy is trapped as chemical energy in ATP

14. Respiratory System: Caloric Cost
Energy Expenditure: The measurement or estimation of energy expenditure
The caloric cost of performing work can be estimated from the measurement of the cost of oxygen (how much is consumed)
1 Litre of oxygen consumed is equal to 5 kcal in energy expenditure
Remember, oxygen is needed for aerobic respiration