339177
Which of the following statements concerning the cardiac output is correct?
1 Is increased by stimulation of the vagus nerve.
2 Is increased by aldosterone released from the adrenal medulla.
3 Is largely determined by the end diastolic volume
4 Can be measured by dividing the oxygen consumption by the difference in \(\mathrm{PO}_{2}\) of the venous and arterial blood
Explanation:
Cardiac output is increased by circulating adrenaline (epinephrine) and not by aldosterone, which is secreted by the adrenal cortex. It can be measured by the dividing the oxygen consumption of the body by the difference in oxygen content between the mixed venous and blood arteries.
BIOXI18: BODY FLUIDS AND CIRCULATION
339178
What would be the cardiac output of a person having 72 heart beats per minute and a stroke volume of \(50 \mathrm{~mL}\) ?
1 \(360 \mathrm{~mL}\)
2 \(3600 \mathrm{~mL}\)
3 \(7200 \mathrm{~mL}\)
4 \(5000 \mathrm{~mL}\)
Explanation:
Volume in one beat \(=50 \mathrm{~mL}\), Volume in 72 beats \(=72 \times 50=3600 \mathrm{~mL}\).
NCERT Exemplar
BIOXI18: BODY FLUIDS AND CIRCULATION
339179
Joint diastole phase of the cardiac cycle is in between
1 Beginning of atrial diastole and end of ventricular diastole
2 'Lubb' and 'Dup' sound
3 Beginning of atrial systole and end of ventricular systole
4 None of these
Explanation:
During each cardiac cycle two prominent sounds are produced which can be easily heard through a stethoscope. The first heart sound (lub) is associated with the closure of the tricuspid and bicuspid valves whereas the second heart sound (dub) is associated with the closure of the semilunar valves.
339177
Which of the following statements concerning the cardiac output is correct?
1 Is increased by stimulation of the vagus nerve.
2 Is increased by aldosterone released from the adrenal medulla.
3 Is largely determined by the end diastolic volume
4 Can be measured by dividing the oxygen consumption by the difference in \(\mathrm{PO}_{2}\) of the venous and arterial blood
Explanation:
Cardiac output is increased by circulating adrenaline (epinephrine) and not by aldosterone, which is secreted by the adrenal cortex. It can be measured by the dividing the oxygen consumption of the body by the difference in oxygen content between the mixed venous and blood arteries.
BIOXI18: BODY FLUIDS AND CIRCULATION
339178
What would be the cardiac output of a person having 72 heart beats per minute and a stroke volume of \(50 \mathrm{~mL}\) ?
1 \(360 \mathrm{~mL}\)
2 \(3600 \mathrm{~mL}\)
3 \(7200 \mathrm{~mL}\)
4 \(5000 \mathrm{~mL}\)
Explanation:
Volume in one beat \(=50 \mathrm{~mL}\), Volume in 72 beats \(=72 \times 50=3600 \mathrm{~mL}\).
NCERT Exemplar
BIOXI18: BODY FLUIDS AND CIRCULATION
339179
Joint diastole phase of the cardiac cycle is in between
1 Beginning of atrial diastole and end of ventricular diastole
2 'Lubb' and 'Dup' sound
3 Beginning of atrial systole and end of ventricular systole
4 None of these
Explanation:
During each cardiac cycle two prominent sounds are produced which can be easily heard through a stethoscope. The first heart sound (lub) is associated with the closure of the tricuspid and bicuspid valves whereas the second heart sound (dub) is associated with the closure of the semilunar valves.
339177
Which of the following statements concerning the cardiac output is correct?
1 Is increased by stimulation of the vagus nerve.
2 Is increased by aldosterone released from the adrenal medulla.
3 Is largely determined by the end diastolic volume
4 Can be measured by dividing the oxygen consumption by the difference in \(\mathrm{PO}_{2}\) of the venous and arterial blood
Explanation:
Cardiac output is increased by circulating adrenaline (epinephrine) and not by aldosterone, which is secreted by the adrenal cortex. It can be measured by the dividing the oxygen consumption of the body by the difference in oxygen content between the mixed venous and blood arteries.
BIOXI18: BODY FLUIDS AND CIRCULATION
339178
What would be the cardiac output of a person having 72 heart beats per minute and a stroke volume of \(50 \mathrm{~mL}\) ?
1 \(360 \mathrm{~mL}\)
2 \(3600 \mathrm{~mL}\)
3 \(7200 \mathrm{~mL}\)
4 \(5000 \mathrm{~mL}\)
Explanation:
Volume in one beat \(=50 \mathrm{~mL}\), Volume in 72 beats \(=72 \times 50=3600 \mathrm{~mL}\).
NCERT Exemplar
BIOXI18: BODY FLUIDS AND CIRCULATION
339179
Joint diastole phase of the cardiac cycle is in between
1 Beginning of atrial diastole and end of ventricular diastole
2 'Lubb' and 'Dup' sound
3 Beginning of atrial systole and end of ventricular systole
4 None of these
Explanation:
During each cardiac cycle two prominent sounds are produced which can be easily heard through a stethoscope. The first heart sound (lub) is associated with the closure of the tricuspid and bicuspid valves whereas the second heart sound (dub) is associated with the closure of the semilunar valves.
339177
Which of the following statements concerning the cardiac output is correct?
1 Is increased by stimulation of the vagus nerve.
2 Is increased by aldosterone released from the adrenal medulla.
3 Is largely determined by the end diastolic volume
4 Can be measured by dividing the oxygen consumption by the difference in \(\mathrm{PO}_{2}\) of the venous and arterial blood
Explanation:
Cardiac output is increased by circulating adrenaline (epinephrine) and not by aldosterone, which is secreted by the adrenal cortex. It can be measured by the dividing the oxygen consumption of the body by the difference in oxygen content between the mixed venous and blood arteries.
BIOXI18: BODY FLUIDS AND CIRCULATION
339178
What would be the cardiac output of a person having 72 heart beats per minute and a stroke volume of \(50 \mathrm{~mL}\) ?
1 \(360 \mathrm{~mL}\)
2 \(3600 \mathrm{~mL}\)
3 \(7200 \mathrm{~mL}\)
4 \(5000 \mathrm{~mL}\)
Explanation:
Volume in one beat \(=50 \mathrm{~mL}\), Volume in 72 beats \(=72 \times 50=3600 \mathrm{~mL}\).
NCERT Exemplar
BIOXI18: BODY FLUIDS AND CIRCULATION
339179
Joint diastole phase of the cardiac cycle is in between
1 Beginning of atrial diastole and end of ventricular diastole
2 'Lubb' and 'Dup' sound
3 Beginning of atrial systole and end of ventricular systole
4 None of these
Explanation:
During each cardiac cycle two prominent sounds are produced which can be easily heard through a stethoscope. The first heart sound (lub) is associated with the closure of the tricuspid and bicuspid valves whereas the second heart sound (dub) is associated with the closure of the semilunar valves.
