339186
Blood pressure in the mammalian aorta is maximum during
1 Systole of the left ventricle
2 Diastole of the right atrium
3 Systole of the left atrium
4 Diastole of the right ventricle
Explanation:
Systole of left ventricle has maximum pressure because it has to pump the blood to aorta, which distributes blood all parts of body with much pressure.
BIOXI18: BODY FLUIDS AND CIRCULATION
339187
The second heart sound (dubb) is associated with the closure of
1 Tricuspid valve
2 Semilunar valves
3 Bicuspid valve
4 Tricuspid and bicuspid valves.
Explanation:
Dubb is the second heart sound which is sharp, high pitched of shorter duration and is produced due to closure of semilunar valves at the base of arteries.
NCERT Exemplar
BIOXI18: BODY FLUIDS AND CIRCULATION
339188
During cardiac cycle each ventricle pumps out about \(70 \mathrm{~mL}\) of blood which is called
1 Stroke volume
2 Cardiac output
3 Tidal volume
4 Residual volume
Explanation:
During a cardiac cycle, each ventricle pumps out approximately \(70 \mathrm{~mL}\) of blood which is called the stroke volume. The stroke volume multiplied by the heart rate (no. of beats per min.) gives the cardiac output.
BIOXI18: BODY FLUIDS AND CIRCULATION
339189
During systole of heart
1 Only atria contracts
2 Only ventricles contract
3 Atria and ventricles contract separately
4 Atria and ventricles contract simultaneously
Explanation:
During systole of heart atria and ventricles contract separately. The SAN generates an action potential which stimulates both the atria to undergo a simultaneous contraction - the atrial systole. This increases the flow of blood into the ventricles by about 30 per cent. The action potential is conducted to the ventricular side by the AVN and AV bundle from where the bundle of His transmits it through the entire ventricular musculature. This causes the ventricular muscles to contract, (ventricular systole), the atria undergoes relaxation (diastole), coinciding with the ventricular systole.
339186
Blood pressure in the mammalian aorta is maximum during
1 Systole of the left ventricle
2 Diastole of the right atrium
3 Systole of the left atrium
4 Diastole of the right ventricle
Explanation:
Systole of left ventricle has maximum pressure because it has to pump the blood to aorta, which distributes blood all parts of body with much pressure.
BIOXI18: BODY FLUIDS AND CIRCULATION
339187
The second heart sound (dubb) is associated with the closure of
1 Tricuspid valve
2 Semilunar valves
3 Bicuspid valve
4 Tricuspid and bicuspid valves.
Explanation:
Dubb is the second heart sound which is sharp, high pitched of shorter duration and is produced due to closure of semilunar valves at the base of arteries.
NCERT Exemplar
BIOXI18: BODY FLUIDS AND CIRCULATION
339188
During cardiac cycle each ventricle pumps out about \(70 \mathrm{~mL}\) of blood which is called
1 Stroke volume
2 Cardiac output
3 Tidal volume
4 Residual volume
Explanation:
During a cardiac cycle, each ventricle pumps out approximately \(70 \mathrm{~mL}\) of blood which is called the stroke volume. The stroke volume multiplied by the heart rate (no. of beats per min.) gives the cardiac output.
BIOXI18: BODY FLUIDS AND CIRCULATION
339189
During systole of heart
1 Only atria contracts
2 Only ventricles contract
3 Atria and ventricles contract separately
4 Atria and ventricles contract simultaneously
Explanation:
During systole of heart atria and ventricles contract separately. The SAN generates an action potential which stimulates both the atria to undergo a simultaneous contraction - the atrial systole. This increases the flow of blood into the ventricles by about 30 per cent. The action potential is conducted to the ventricular side by the AVN and AV bundle from where the bundle of His transmits it through the entire ventricular musculature. This causes the ventricular muscles to contract, (ventricular systole), the atria undergoes relaxation (diastole), coinciding with the ventricular systole.
339186
Blood pressure in the mammalian aorta is maximum during
1 Systole of the left ventricle
2 Diastole of the right atrium
3 Systole of the left atrium
4 Diastole of the right ventricle
Explanation:
Systole of left ventricle has maximum pressure because it has to pump the blood to aorta, which distributes blood all parts of body with much pressure.
BIOXI18: BODY FLUIDS AND CIRCULATION
339187
The second heart sound (dubb) is associated with the closure of
1 Tricuspid valve
2 Semilunar valves
3 Bicuspid valve
4 Tricuspid and bicuspid valves.
Explanation:
Dubb is the second heart sound which is sharp, high pitched of shorter duration and is produced due to closure of semilunar valves at the base of arteries.
NCERT Exemplar
BIOXI18: BODY FLUIDS AND CIRCULATION
339188
During cardiac cycle each ventricle pumps out about \(70 \mathrm{~mL}\) of blood which is called
1 Stroke volume
2 Cardiac output
3 Tidal volume
4 Residual volume
Explanation:
During a cardiac cycle, each ventricle pumps out approximately \(70 \mathrm{~mL}\) of blood which is called the stroke volume. The stroke volume multiplied by the heart rate (no. of beats per min.) gives the cardiac output.
BIOXI18: BODY FLUIDS AND CIRCULATION
339189
During systole of heart
1 Only atria contracts
2 Only ventricles contract
3 Atria and ventricles contract separately
4 Atria and ventricles contract simultaneously
Explanation:
During systole of heart atria and ventricles contract separately. The SAN generates an action potential which stimulates both the atria to undergo a simultaneous contraction - the atrial systole. This increases the flow of blood into the ventricles by about 30 per cent. The action potential is conducted to the ventricular side by the AVN and AV bundle from where the bundle of His transmits it through the entire ventricular musculature. This causes the ventricular muscles to contract, (ventricular systole), the atria undergoes relaxation (diastole), coinciding with the ventricular systole.
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BIOXI18: BODY FLUIDS AND CIRCULATION
339186
Blood pressure in the mammalian aorta is maximum during
1 Systole of the left ventricle
2 Diastole of the right atrium
3 Systole of the left atrium
4 Diastole of the right ventricle
Explanation:
Systole of left ventricle has maximum pressure because it has to pump the blood to aorta, which distributes blood all parts of body with much pressure.
BIOXI18: BODY FLUIDS AND CIRCULATION
339187
The second heart sound (dubb) is associated with the closure of
1 Tricuspid valve
2 Semilunar valves
3 Bicuspid valve
4 Tricuspid and bicuspid valves.
Explanation:
Dubb is the second heart sound which is sharp, high pitched of shorter duration and is produced due to closure of semilunar valves at the base of arteries.
NCERT Exemplar
BIOXI18: BODY FLUIDS AND CIRCULATION
339188
During cardiac cycle each ventricle pumps out about \(70 \mathrm{~mL}\) of blood which is called
1 Stroke volume
2 Cardiac output
3 Tidal volume
4 Residual volume
Explanation:
During a cardiac cycle, each ventricle pumps out approximately \(70 \mathrm{~mL}\) of blood which is called the stroke volume. The stroke volume multiplied by the heart rate (no. of beats per min.) gives the cardiac output.
BIOXI18: BODY FLUIDS AND CIRCULATION
339189
During systole of heart
1 Only atria contracts
2 Only ventricles contract
3 Atria and ventricles contract separately
4 Atria and ventricles contract simultaneously
Explanation:
During systole of heart atria and ventricles contract separately. The SAN generates an action potential which stimulates both the atria to undergo a simultaneous contraction - the atrial systole. This increases the flow of blood into the ventricles by about 30 per cent. The action potential is conducted to the ventricular side by the AVN and AV bundle from where the bundle of His transmits it through the entire ventricular musculature. This causes the ventricular muscles to contract, (ventricular systole), the atria undergoes relaxation (diastole), coinciding with the ventricular systole.
