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54 Cards in this Set

  • Front
  • Back
What is Perffusion
The delivery of oxygen and the removal of waste products.
What is shock
Lack of adequate tissue perfusion.
What is anaerobic metabolism
Without O2
What is areobic metabolism
With O2
What is homeostasis
The act of seeking balance
The renal system is what type of system
Buffer system.
What is the first system to shut down when you go into shock
Renal system
What are the four components of the Frick principle
1. Adequate concentration of inspired oxygen.
2. On-loading of oxygen to red blood cells at lungs.
3. Delivery of red blood cells to tissue cells.
4. Off-loading of oxygen from red blood cells to tissue cells.
Where are the Baroreceptors located
They are located in the walls of atria, vena cava, aortic arch, and carotid sinus.
What is Preload
Is when the heart muscle is stretched as chambers fill with blood between contractions.
What is afterload
Is pressure ventricular muscles must generate to overcome higher pressure in aorta.
What is the most abundant substance in the human body
Water
Body fluid is divided into two main compartments
Intracellular and extracellular
Fluid that is found within individual cells
Intracellular
Fluid that is found outside of cell membranes
extracellular
Salts that break up into ions (electrically charged particles) are called
Electrolytes
What are the two types of ions
Cations and anions
Essential cations (positiviely charged) include
Sodium (Na+)
Potassium (K+)
Calcium (Ca2+)
Magnesium (Mg2+)
Essential anions )Negitively charged) include
Chloride (C1-)
Bicarbonate (HCO3-)
Phosphate (HPO4 2-)
Electrolytes are measured in
milliequivalents per liter(mEq/L)
Body fluid also contains
nonelectrolytes
Diffusion
Movement of particles (solutes)from area of higher concentration to one of lower concentration until all substances are scettered evenly through available space.
Facilitated Diffusion
"Transport proteins" assist many molecules and ions in deffusing accross cell membrane.
Osmosis
Movement of water accross semipermeable membrane.
Active Transport
Moves solutes against their concentration gradients accross cell membrane from side of lower concentration to side of higher concentration.
What are the three functions that blood has
Transportation, regulation, and protection
Blood cells include
Erythrocytes (red blood cells) and Leukocytes (white blood cells)
Erythrocytes have the ability to carry
Oxygen
Leukocytes
Destroy foreign organisms by producing antibodies or directly attacking and killing bacteria.
Platelets
are formed elements suspended in plasma.
Acid is
Substance that increases concentration of hydrogen ions in water solution.
Base is
Substance that decreases concentration of hydrogen ions.
Fewer hydrogen ions mean
Higher pH
More hydrogen ions mean
Lower pH
pH above 7.45 is called
Alkalosis
pH below 7.35 is referred to as
Acidosis
Buffer systems
are fast acting defenses.
Respiration
Plays a vital role in maintaining acid-base balance by regulating concentration of carbon dioxide (and subsequently amount of carbonic acidI in body.
Decreased ventilation
Increases carbon dioxide and carbonic acid (and therefore hydrogen ions) in the blood, thereby decreasing blood pH.
What is the most common cause of Respiratory acidosis
Hyperventilation
Respiratory alkalosis
(carbonic acid deficit)
Occurs when exhalation of carbon dioxide is exxcessive.
Metabolic acidosis
(base bicarbonate deficit)
Occurs when level of bicarbonate (base) is low in relation to carbonic acid levels.
Metabolic alkalosis (bicarbonate excess)
Occurs when level of bicarbonate is high.
Compensated (Nonprogressive)shock
Earliest stage of shock
decompensated (progressive) shock
Occurs when blood volume drops more than 15-25%
Irreversible shock
Rapid deterioration of cardiovascular system that cannot be helped by compensatory mechanisms or medical intervention.
All types of shock
Are due to underlying lack of tissue perfusion.
Hypovolemic shock
Caused be loss of blood or fluid from the body.
Cardiogenic shock
Caused by profound failure of heart, primarily left ventricle.
Neurogenic shock
Nervous system is no longer able to control blood vessel diameter (seen in spinal cord injury).
Anaphylactic shock
severe response to substance to which patient is extremely allergic (antigen).
septic shock
Caused by overwhelming infection (usually bacterial) that leads to massive vasodialation.
Obstructive shock
Obstructs blood flow somewhere in the cardiac system (perricardial tampenade, tention phneumothorax, pulmanary embolism)
Distributive shock
Has Neurogenic, Anaphylactic, and Septic shock in the same category, due to dilation of blood vessels.