LEC 3: Definitions Flashcards
Isotonic Solution
Two solutions having the same osmotic pressure across a semipermeable membrane. This state allows for the free movement of water across the membrane without changing the concentration of solutes on either side
Hypertonic Solution
The concentration of solutes is greater outside the cell than inside it. Fluid will leave the cell and go into interstitial space
Hypotonic Solution
The concentration of solutes is greater inside the cell than outside of it
Tonicity
Cells affected by the osmolality of fluid around them
Osmolality
Total solute concentration in an aqueous solution
Permeability
Cells that are selectively permeable
Selectively Oermeable
Permits free passage of some material and restricts others
Intracellular Fluid
Fluid inside of cells (67%)
Extracellular Fluid
Fluid outside of cells (32%)
Intravascular Fluid
Is part of extracellular fluid; fluid in blood vessels (8%)
Interstitial Fluid
Is part of extracellular fluid; fluid between the cells and blood vessels (24%)
Inflitration
IV fluid enters the surrounding space around venipuncture site
Phlebitis
Inflammation of the vein
Fluid Volume Excess
Patient receives too much fluid
Coronary Atherosclerosis
A buildup of plaque inside the artery walls. This buildup causes the inside of the arteries to become narrower and slows down the flow of blood.
Cardiovascular Disease
A class of diseases that involve the heart or blood vessels
Peripheral Vascular Disease (PVD)
Is a blood circulation disorder that causes the blood vessels outside of your heart and brain to narrow, block, or spasm. This can happen in your arteries or veins. PVD typically causes pain and fatigue, often in your legs, and especially during exercise
Vasodilation
Is the widening of blood vessels. It results from relaxation of smooth muscle cells within the vessel walls, in particular in the large veins, large arteries, and smaller arterioles. When blood vessels dilate, the flow of blood is increased due to a decrease in vascular resistance. Therefore, dilation of arterial blood vessels decreases blood pressure.