Human physiology involves examining not only the structures of the human body but also how they function together in harmony. Nerves and hormones work together under the control of the brain to ensure that the heart beats at the correct rate, that digestion is completed by all the right enzymes produced at the right times, and that our breathing rate matches our activity level. After digestion, nutrients are processed, stored or disposed of so that our cells have the resources they need to live, grow and repair themselves. If an emergency arrives, the body is prepared; and if we should move to a high altitude, our physiology is modified so that we adapt to the different conditions.

Classroom Code: