II) LATEST UPDATE STUDY GUIDE
Viscosity of Blood? - answertwice as thick as water
How long does it take for a drop of blood to circulate through the entire system? -
answer20-60 seconds
What is the composition of Blood - answer55% plasma, 45% formed elements,
What are the fucntions of blood? - answer-Moves regulatory and processed
molecules, gasses, waste, and nutrients
-Regulats pH and osmosis process
-Maintain body temperature
-Protect against foreign substances
-Assist in clotting
What is the composition of plasma? - answer91% water
7% proteins
2% other solutes
What proteins are found in blood plasma? - answeralbumin, globulins, fibrinogen
What solutes are found in blood plasma? - answerIons, nutrients, waste products,
gasses, regulatory substances
What are two blood disorders - answerAnemia and sickle-cell disease
What is sickle-cell disease? - answeran abnormal red blood cell that has a crescent
shape and an abnormal form of hemoglobin
, What is anemia? - answera decrease in the oxygen-carrying ability of the blood
How much blood does the heart pump per minute? - answer~5 1/4 Quarts per
minute
What are action potentials? - answerSequence of electrical changes when a nerve
membrane receives a stimulus that exceeds a threshold
What is depolarization? - answerLoss of an electrical charge on the surface of a
membrane
What is Repolarization? - answerGain of electrical charge on the surface of a
membrane
What are the functions of the heart? - answergenerating blood pressure, routing
blood, ensuring one-way blood flow, regulating blood supply
What are the two divisions of the heart? - answerPulmonary Circuit and Systemic
Circuit
What are the components of the heart? - answerPericardium, Heart Wall,
Chambers, Valves
What is the pericardium? - answerDouble-walled sac that surrounds the heart and
reduces friction between pericardial membranes
What is the heart wall? - answerThree protective layers of tissue
What to chambers of the heart do? - answerReceive and return blood from and to
the body