ESS 345 - HK PROPEL STUDY QUESTIONS (EXAM 3)
QUESTIONS AND ANSWERS LATEST UPDATE
Which statement about the left ventricle is true?
It will hypertrophy in response to both aerobic training and resistance training
Which statement about the heart is true?
The function of the cavity between the pericardium and the heart is to hold fluid that reduces friction
between the sac and the beating heart
True or False: Low resting heart rate in endurance athletes in uncommon and could be an indication of
pathological bradycardia.
False
During exercise, in addition to transporting oxygen and nutrients to active muscles and regulating
temperature, blood also helps to
maintain the proper body pH
Heart muscle is collectively called
myocardium
True or False: Symptoms of both bradycardia and tachycardia include fatigue, dizziness,
lightheadedness, and fainting.
True
What is an example of external control of heart activity?
, Norepinephrine and epinephrine both increase heart rate
True or False: In order for blood to flow in a vessel there must be a pressure difference from one end
of the vessel to the other end of the vessel. Blood will flow from the region of the vessel with low
pressure to the region of the vessel with high pressure.
False
Which is the most powerful of the four heart chambers?
Left ventricle
What situation is optimal for physical performance?
A low hematocrit with a normal or slightly elevated number of red blood cells
What is the relaxation phase in one full cardiac cycle called?
Diastole
What is the contraction phase in one full cardiac cycle called?
Systole
True or False: The diastolic phase is longer than the systolic phase.
True
True or False: The reason that there is a pressure differential from the arterial to the venous circulation
is that the blood vessels themselves provide resistance or impedance to blood flow. The resistance
that the vessel provides is largely dictated by the properties of the blood vessels and the blood itself.
True
What is NOT a role the sympathetic nervous system plays in regulating the distribution of blood?
QUESTIONS AND ANSWERS LATEST UPDATE
Which statement about the left ventricle is true?
It will hypertrophy in response to both aerobic training and resistance training
Which statement about the heart is true?
The function of the cavity between the pericardium and the heart is to hold fluid that reduces friction
between the sac and the beating heart
True or False: Low resting heart rate in endurance athletes in uncommon and could be an indication of
pathological bradycardia.
False
During exercise, in addition to transporting oxygen and nutrients to active muscles and regulating
temperature, blood also helps to
maintain the proper body pH
Heart muscle is collectively called
myocardium
True or False: Symptoms of both bradycardia and tachycardia include fatigue, dizziness,
lightheadedness, and fainting.
True
What is an example of external control of heart activity?
, Norepinephrine and epinephrine both increase heart rate
True or False: In order for blood to flow in a vessel there must be a pressure difference from one end
of the vessel to the other end of the vessel. Blood will flow from the region of the vessel with low
pressure to the region of the vessel with high pressure.
False
Which is the most powerful of the four heart chambers?
Left ventricle
What situation is optimal for physical performance?
A low hematocrit with a normal or slightly elevated number of red blood cells
What is the relaxation phase in one full cardiac cycle called?
Diastole
What is the contraction phase in one full cardiac cycle called?
Systole
True or False: The diastolic phase is longer than the systolic phase.
True
True or False: The reason that there is a pressure differential from the arterial to the venous circulation
is that the blood vessels themselves provide resistance or impedance to blood flow. The resistance
that the vessel provides is largely dictated by the properties of the blood vessels and the blood itself.
True
What is NOT a role the sympathetic nervous system plays in regulating the distribution of blood?
