Part 2 Physiology: Cellular, Vascular Flashcards
How much of our Total Body Water is in the:
(a) extracellular matrix
(b) intracellular matrix
extracellular-1/3
intracellular- 2/3
What are the cellular and non-cellular components of blood?
cellular: red and white blood cells, platelets
non-cellular: plasma
Relative amounts of cellular and non-cellular components of blood in a healthy individual?
40-45% blood cells (cellular)
55-60% plasma (non-cellular)
What are the names for positively and negatively charged ions?
+ cation
- anion
Describe differences between arteries and veins.
Arteries:
-carry oxygenated blood away from the heart
-pressure is much higher bc hear is pumping it away
-thick walls, muscular layer
Veins:
-carry deoxygenated blood towards heart, pressure is lower
-rely on valves to move blood through and upwards, prevent backflow
-thinner walls, closer to surface of body
Circulation types:
(a) systemic
(b) pulmonary
(c) coronary
(a) carries oxygenated blood away from heart
(b) carries deoxygenated blood away from heart to lungs, back to heart
(c) provides heart with oxygenated blood via arteries and veins that supply heart muscle
What is ph?
What does hydrogen do in the body?
-potential hydrogen
-measure of the amount of hydrogen ions determines acidity or alkalinity
-more acidic=more hydrogen ions
Hydrogen balances alkalinity and acidity in the body.
What is the extracellular matrix’s major cation and anion?
cation-sodium
anion-chloride
Describe the phospholipid bilayer
-membrane that separates a cell from its environment
-made of two layers of phospholipids
-hydrophilic heads exposed to extracellular matrix
-hydrophobic tails pointed inward
Intracellular matrix major cation
potassium
What does pressure do in the body?
Pressure moves fluid around in the whole body. Muscle contraction helps move fluid.
