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What's Homeostasis?
The state of equilibriom in internal environment of body, naturally maintained by adaptive responses that promote healthy survival.
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What accounts for 60% of the body weight in adults?
Water accounts for _____ % of the body weight in adults.
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What accounts for 70-80% of the body weight in infants?
Water accounts for _______ of the body weight in infants.
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Fluids in the body fall under 3 catagories of spaces. What are the names of these fluids?
1) Intracellular fluid (ICF)
2) Extracellular fluid (ECF)
3) Transcellular
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Extracellular fluid (ECF) is sub divided into what 2 catagories?
1) intravascular (plasma)
2) interstitial
These are subcatagories of what type of fluid in the body?
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Intracellular fluid is located within the cells and makes up ____% of body wieght.
______ fluid is located within the cells and makes up 42% of body wieght?
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What's the most prevelent cation in the ICF?
Potassium (K+) is the most prevelent cation in the ____.
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What is the most prevelent anion in the ICF?
Phosphate (PO4) is the most prevelent anion in the ____.
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Define Extracellular fluid (ECF).
The fluid space between cells (interstitial fluid) and the plasma space.
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What's the most prevalent anion in the interstitial fluid?
Chloride (Cl-) is the most prevalent anion in the _______.
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What's the most prevalent cation in the interstitial fluid?
Sodium (Na+) is the most prevalent cation in the ________ fluid.
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How much of the ECF is interstitail?
2/3 of the ECF is ______.
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The extracellular fluid (ECF) that is within the vascular space is called ______.
Intravascular (IV) fluid falls under what catagory of fluid?
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____ of ECF is intravascular.
1/3 of ECF is ______.
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Approximately how much of the bodies fluid is transcellular fluid?
Approximately 1L of the bodies fluid is ________ fluid?
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Transcellular fluid includes fluid in what places? (5)
1) Cerebrospinal fluid
2) Gastrointestinal (GI) tract
3) Pleural spaces
4) Synovial spaces
5) Peritoneal fluid spaces
All these places would have fluid belonging to what type of fluid?
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Define diffusion.
The movement of molecules from an area of high concentration to low concentration is?
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This occurs in liquids, solids and gases when a permeable membrane separates them.
Diffusion
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Define facilitated diffusion.
A type of diffusion in which a specific carrier molecule is involved to accelerate diffusion.
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Define active transport.
The process in which molecules move against a concentration gradient.
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What energy source is used for active transport?
ATP is the energy source used for __________.
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The sodium-potassium pump is and example of what kind of transport?
The ____ ____ ____ is and example of what kind of active transport?
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Define osmosis.
The movement of water between two compartments by a membrane permeable to water but not to a solute is called what?
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In osmosis water moves from an area of __A__ solute concentration to an area of __B__ solute concentration?
A) low
B) high
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Does osmosis require energy?
NO, osmosis does not require energy.
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Define osmotic pressure.
The amount of pressure required to stop osmotic flow of water?
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Because of osmotic pressure water will move from a _____ concentrated side to a ______ consentrated side.
Water will move from _less____ concentrated side to __more__ consentrated side because of _____ ______.
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Osmotic pressure is determined by what?
____ ____ is determined by the concentration of solutes in solution.
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Define hydrostatic pressure?
The force within a fluid compartment is what?
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The major force that pushes water out of the vascular system at the capillary level.
Hydrostatic pressure is the major force that pushes water out of the _______ system at the capillary level.
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