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BIOLOGY 2401 ANATOMY AND PHYSIOLOGY PART I CHAPTER 1

Albert_Lan
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BIOLOGY 2401 ANATOMY AND PHYSIOLOGY PART I CHAPTER 1

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    1. BIOLOGY 2401 ANATOMY AND PHYSIOLOGY PART I CHAPTER 1 The Human Body: An Orientation

    3. PHYSIOLOGY Physiology is the study of function and how the various functions are inter-related.

    4. Levels of Structural Organization Atoms & molecules Organelles Cells Tissues Organs Organ systems Organism Populations Communities Eco-systems

    5. Levels of Organization Example

    6. HOMEOSTASIS The maintenance of a stable though oscillating system. In response to both external and internal stimuli & conditions. Homeostasis is not an equilibrium state, this would be death. Homeostasis keeps conditions in the body within a working range. Temperature Blood sugar

    7. HOMEOSTASIS Control Mechanisms There are many mechanisms to control conditions or maintain homeostasis. Negative feedback systems. (Most common) Acts opposite to the factor change. Positive feedback systems. (Notable but few) Acts in the same direction as the factor change.

    8. HOMEOSTASIS Homeostatic Imbalance Many disease processes are a state of homeostatic imbalance. Temporary. Permanent => Death. Aging affects control mechanisms of homeostasis and this can cause imbalances Temperature.

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