PHYS 261 MOST ASKED QUESTIONS AND 100%
CORRECT ANSWERS
Physiology
study of the normal functions of a living organism and its component parts.
Homeostasis
regulation of the body's internal environment
Is homeostasis fast acting or slow acting?
Fast acting
Placebo
substance which has a positive mental effect, but no physical effect
Cations
positively charged ions
Isotopes
Atoms of the same element that have different numbers of neutrons
Active cellular transport
moves molecules against their concentration gradient and requires an outside
source of energy
Refractory period
a period when a second action potential cannot be triggered, no matter how large
the stimulus.
Isotonic muscle contraction vs Isometric muscle contraction
Isotonic: creates force and moves a load.
Isometric: creates force without moving a load
Intercalated discs
gap junctions that connect myocardial cells and allow depolarizations to spread
rapidly from cell to cell
what does "MI" stand for
myocardial infarction
Define myocardial infarction
heart attack
, isovolumetric ventricular systole
the ventricular blood volume does not change, but pressure rises. When ventricular
pressure exceeds arterial pressure, the semilunar valves open, and blood is ejected
into the arteries
Cardiac Output (CO)
the volume of blood pumped per ventricle per unit time
Cardiac output formula
heart rate X stroke volume
Angiogenesis
the process by which new blood vessels grow and develop
What does Mean Arterial Pressure (MAP) represent?
represents the driving pressure for blood flow.
MAP equation
(SBP + 2DBP)/3
Erythropoietin
hormone produced by the kidneys that stimulates red blood cell production from
bone marrow
Pulmonary ventilation
the movement of air into and out of the lungs
Surfactant
chemicals that helps prevent the alveoli from collapsing
Where is surfactant produced?
Type II alveolar cells
Dalton's Law:
The total pressure of a mixture of gases is the sum of the pressures of the individual
gases in the mixture
Boyle's Law:
states that as the volume available to gas increases, the gas pressure decreases
also gas volume is inversely proportional to pressure.
Glomerulus
a knot of capillaries within the renal corpuscle
CORRECT ANSWERS
Physiology
study of the normal functions of a living organism and its component parts.
Homeostasis
regulation of the body's internal environment
Is homeostasis fast acting or slow acting?
Fast acting
Placebo
substance which has a positive mental effect, but no physical effect
Cations
positively charged ions
Isotopes
Atoms of the same element that have different numbers of neutrons
Active cellular transport
moves molecules against their concentration gradient and requires an outside
source of energy
Refractory period
a period when a second action potential cannot be triggered, no matter how large
the stimulus.
Isotonic muscle contraction vs Isometric muscle contraction
Isotonic: creates force and moves a load.
Isometric: creates force without moving a load
Intercalated discs
gap junctions that connect myocardial cells and allow depolarizations to spread
rapidly from cell to cell
what does "MI" stand for
myocardial infarction
Define myocardial infarction
heart attack
, isovolumetric ventricular systole
the ventricular blood volume does not change, but pressure rises. When ventricular
pressure exceeds arterial pressure, the semilunar valves open, and blood is ejected
into the arteries
Cardiac Output (CO)
the volume of blood pumped per ventricle per unit time
Cardiac output formula
heart rate X stroke volume
Angiogenesis
the process by which new blood vessels grow and develop
What does Mean Arterial Pressure (MAP) represent?
represents the driving pressure for blood flow.
MAP equation
(SBP + 2DBP)/3
Erythropoietin
hormone produced by the kidneys that stimulates red blood cell production from
bone marrow
Pulmonary ventilation
the movement of air into and out of the lungs
Surfactant
chemicals that helps prevent the alveoli from collapsing
Where is surfactant produced?
Type II alveolar cells
Dalton's Law:
The total pressure of a mixture of gases is the sum of the pressures of the individual
gases in the mixture
Boyle's Law:
states that as the volume available to gas increases, the gas pressure decreases
also gas volume is inversely proportional to pressure.
Glomerulus
a knot of capillaries within the renal corpuscle
