1-2. Physiology. Considers the operation of specific organ systemsRenal ? kidney functionNeurophysiology ? workings of the nervous systemCardiovascular ? operation of the heart and blood vesselsFocuses on the functions of the body, often at the cellular or molecular levelUnderstanding physiolo
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1. 1-1 AP 151 Introduction to Human Physiology Chapter 1
2. 1-2 Physiology Considers the operation of specific organ systems
Renal kidney function
Neurophysiology workings of the nervous system
Cardiovascular operation of the heart and blood vessels
Focuses on the functions of the body, often at the cellular or molecular level
Understanding physiology also requires a knowledge of physics, which explains electrical currents, blood pressure, and the way air pressure allows the movement of air into and out of the lungs
3. 1-3 Approaches to Physiology
Mechanistic approach - asks how a function occurs
How do red blood cells carry oxygen?
Teleological approach - asks why a function occurs
Why do red blood cells carry oxygen?
4. 1-4 Body Environments and Fluids External environment
The air in which we live
Body fluids - two major compartments
Intracellular fluid - cytosol; fluid within cells (28 L=67%)
Extracellular fluid - all fluid outside cells of the body
Plasma - liquid component of blood (3L=7%)
Interstitial fluid - aka, tissue fluid; fluid bathing cells (11L=26%)
Claude Bernard called this the milieu interieux; the internal environment.
There is a constant interaction between these 3 fluids
They are separated form one another only by cell membranes
Therefore, changing one (especially tissue fluid) has effects on the other two