BIOS 255 MIDTERM REVIEW
• QRS Complex
Answer: Ventricular depolarization (contraction)
• S wave
Answer: Peak of ventricular depolarization
• S-T Segment
Answer: Plateau--entire ventricular myocardium is depolarized
• T-wave
Answer: Ventricular repolarization
• Order of contraction
Answer: Both atria are rapidly contracted and relaxed followed bythe same in the ventricles
• LUB sound
Answer: AV valves closing
• DUB sound
Answer: semilunar valves closing
• Systole
Answer: contraction
• Diastole
Answer: relaxation
• Cardiac Output
Answer: The volume of blood ejected from one ventricle of the heart inone minute.
• Stroke Volume
Answer: The volume of blood pumped out by a ventricle with eachheartbeat
• Cardiac Output Equation
Answer: CO(mL/min)=SV(mL/beat)*HR(beats/min)
• Cardiac Output is Also...
, Answer: The difference between systole and diastole
• Stroke Volume is regulated by .......................
Answer
1.Preload
2.Contractility
3.Afterload
• Preload
Answer: Initial stretching of the ventricle
• Contractility
Answer: refers to how hard the myocardium contracts for a given preload
• After Load
Answer: Actual force of contraction needed to pump blood out of the ventricle
• Regular Aerobic Exercise can...
Answer:
Increase COIncrease HDL
Lower Triglycerides
Improve lung function
Decrease BP
Assist in weight control
• Embryological Development of the heart
Answer: Begins with an inflow and outflow tube, which are separate. Around day 22 they join
together, creating a primitive hearttube. On day 23, folding creates ventricles inferior to atria.
• Coronary Artery Disease
Answer: disease of the arteries surrounding the heart causedby clogging
• Atherosclerosis
Answer: condition in which fatty deposits called plaque build up on theinner walls of the
systemic arteries
• congestive heart failure (CHF)
Answer: the failure of the heart to pump efficiently,leading to excessive blood or fluids in the
lungs, the body, or both
• Types of Blood Vessels
Answer: Arteries, Veins, Capillaries
• Layers of the Blood Vessels
• QRS Complex
Answer: Ventricular depolarization (contraction)
• S wave
Answer: Peak of ventricular depolarization
• S-T Segment
Answer: Plateau--entire ventricular myocardium is depolarized
• T-wave
Answer: Ventricular repolarization
• Order of contraction
Answer: Both atria are rapidly contracted and relaxed followed bythe same in the ventricles
• LUB sound
Answer: AV valves closing
• DUB sound
Answer: semilunar valves closing
• Systole
Answer: contraction
• Diastole
Answer: relaxation
• Cardiac Output
Answer: The volume of blood ejected from one ventricle of the heart inone minute.
• Stroke Volume
Answer: The volume of blood pumped out by a ventricle with eachheartbeat
• Cardiac Output Equation
Answer: CO(mL/min)=SV(mL/beat)*HR(beats/min)
• Cardiac Output is Also...
, Answer: The difference between systole and diastole
• Stroke Volume is regulated by .......................
Answer
1.Preload
2.Contractility
3.Afterload
• Preload
Answer: Initial stretching of the ventricle
• Contractility
Answer: refers to how hard the myocardium contracts for a given preload
• After Load
Answer: Actual force of contraction needed to pump blood out of the ventricle
• Regular Aerobic Exercise can...
Answer:
Increase COIncrease HDL
Lower Triglycerides
Improve lung function
Decrease BP
Assist in weight control
• Embryological Development of the heart
Answer: Begins with an inflow and outflow tube, which are separate. Around day 22 they join
together, creating a primitive hearttube. On day 23, folding creates ventricles inferior to atria.
• Coronary Artery Disease
Answer: disease of the arteries surrounding the heart causedby clogging
• Atherosclerosis
Answer: condition in which fatty deposits called plaque build up on theinner walls of the
systemic arteries
• congestive heart failure (CHF)
Answer: the failure of the heart to pump efficiently,leading to excessive blood or fluids in the
lungs, the body, or both
• Types of Blood Vessels
Answer: Arteries, Veins, Capillaries
• Layers of the Blood Vessels
