Human Physiology 261 Midterm Study
Guide Questions with Accurate
Answers
Perfusion - ANSWERSThe supply of oxygen to and removal of wastes from the cells
and tissues of the body as a result of the flow of blood through the capillaries.
Ventilation - ANSWERSthe movement of air into and out of the lungs
Alveoli - ANSWERStiny sacs of lung tissue specialized for the movement of gases
between air and blood
surfactant - ANSWERSchemical produced in the lungs to maintain the surface tension
of the alveoli and keep them from collapsing
Boyle's Law - ANSWERSP1V1=P2V2
A principle that describes the relationship between the pressure and volume of a gas at
constant temperature
aveolar ventilation rate - ANSWERSAlveolar ventilation = ventilation rate x (tidal volume
- dead space volume).
erthropoietin - ANSWERSRed blood cell production is regulated primarily by
erythropoietin. (produced primarily in kidneys)
Thrombopoietin - ANSWERS(produced in the liver and kidneys) regulates the growth
and maturation of megakaryocytes; platelets
Hematocrit - ANSWERSthe percentage of whole blood occupied by RBC. It is used to
indicate: packed cell volume, ration of RBC to total blood volume, and anemia.
hemolysis - ANSWERSdestruction of red blood cells
Fibrinolysis - ANSWERSBreakdown and removal of a clot/ fibrin
Plasma composition, percentage of each, and their functions - ANSWERScomposed
mostly of water(92%)
- a liquid medium for the suspension and transport of blood cells and solutes
with dissolved proteins (7%),
