Chambers of Heart
Trending Questions
The walls of ventricles are much thicker than atria. Explain.
- stimulation of the sino-auricular node
- the pressure difference between the post caval and atrium
- pushing open of the venous valves
- suction pull
The tricuspid valve is present between
(A)Right atrium and ventricle
(B)The two atria
(C)The two ventricle
(D)Left atrium and ventricle
- at the opening of the right ventricle into the pulmonary artery
- at the opening of left ventricle into the aorta
- at the opening of inferior vena cava into right atrium
- at the opening of coronary sinus into the right atrium
Bicuspid valve is present between the
left auricle and left ventricle
left ventricle and right auricle
right auricle and right ventricle
right ventricle and left auricle
- No oxygen would reach the cells
- No blood would reach the head and neck
- There would be no blood circulation
- The blood would be unable to carry food to the cells
- auricles
- ventricles
- pulmonary trunk
- both a and b
(i) Why is the removal of feces from the alimentary canal not considered as excretion?
(ii) Name the waste products excreted by lungs and skin.
I. The heart is a hollow organ present in the thoracic cavity
II. The pulmonary veins are guarded by valves which prevent the backflow of blood.
III. The walls of the left ventricle are about three times thicker than the right ventricle.
IV. Pulmonary arteries carry deoxygenated blood to the lungs
V. The foetal heart has an opening between two atria
- I, III, IV and V only
- II only
- I, III and IV only
- All of the above
Column IColumn II1.Right atriumi. Receives oxygenated blood from the lungs2.Left atriumii. Passes the blood to aorta3.Right ventricleiii. Receives deoxygenated blood from the superior vena cava and inferior vena cava4.Left ventricleiv. Passes the blood to lungs through the pulmonary artery
- 1-iii, 2-i, 3-iv, 4-ii
- 1-iii, 2-ii, 3-i, 4-iv
- 1-ii, 2-i, 3-iv, 4-iii
- 1-i, 2-iii, 3-iv, 4-ii
Describe the role the kidneys play in regulating the osmotic pressure of the fluids.
- Left atrium
- Left ventricle
- Right ventricle
- Right atrium
Explain the advantage of the complete partition of ventricle among birds and mammals and hence leading to double circulation.
List any three parts of a nephron and mention one function of each of them.
Which chamber of the heart pumps blood to the brain?
Column IColumn II1.Right atriumi. Receives oxygenated blood from the lungs2.Left atriumii. Passes the blood to aorta3.Right ventricleiii. Receives deoxygenated blood from the superior vena cava and inferior vena cava4.Left ventricleiv. Passes the blood to lungs through the pulmonary artery
- 1-iii, 2-ii, 3-i, 4-iv
- 1-iii, 2-i, 3-iv, 4-ii
- 1-ii, 2-i, 3-iv, 4-iii
- 1-i, 2-iii, 3-iv, 4-ii
The upper chambers of the heart are called
Auricles
Ventricles
Spiracles
Tentacles
Identify the blood vessel 'A' in this diagram.
Carotid artery
Inferior vena cava
Aorta
Pulmonary artery
(ii) The value of systolic pressure is always lower than that of diastolic pressure.
- stimulation of the sino-auricular node
- the pressure difference between the post caval and atrium
- suction pull
- pushing open of the venous valves
- at the opening of the right ventricle into the pulmonary artery
- at the opening of left ventricle into the aorta
- at the opening of inferior vena cava into right atrium
- at the opening of coronary sinus into the right atrium
I. The heart is a hollow organ present in the thoracic cavity
II. The pulmonary veins are guarded by valves which prevent the backflow of blood.
III. The walls of the left ventricle are about three times thicker than the right ventricle.
IV. Pulmonary arteries carry deoxygenated blood to the lungs
V. The foetal heart has an opening between two atria
- I, III, IV and V only
- II only
- I, III and IV only
- All of the above
- single
- two
- three
- four
I. The heart is a hollow organ present in the thoracic cavity
II. The pulmonary veins are guarded by valves which prevent the backflow of blood.
III. The walls of the left ventricle are about three times thicker than the right ventricle.
IV. Pulmonary arteries carry deoxygenated blood to the lungs
V. The foetal heart has an opening between two atria
- I, III, IV and V only
- II only
- I, III and IV only
- All of the above
Column IColumn II1.Right atriumi. Receives oxygenated blood from the lungs2.Left atriumii. Passes the blood to aorta3.Right ventricleiii. Receives deoxygenated blood from the superior vena cava and inferior vena cava4.Left ventricleiv. Passes the blood to lungs through the pulmonary artery
- 1-iii, 2-ii, 3-i, 4-iv
- 1-iii, 2-i, 3-iv, 4-ii
- 1-ii, 2-i, 3-iv, 4-iii
- 1-i, 2-iii, 3-iv, 4-ii
- Left atrium
- Right atrium
- Left ventricle
- Right ventricle
Why is the left ventricular wall of the heart thicker than the right ventricular wall?
To accommodate a greater volume of blood
To expand the thoracic cage during diastole
To pump blood through a smaller valve
To pump blood with greater pressure
Why is the left ventricular wall of the heart thicker than the right ventricular wall?
To accommodate a greater volume of blood
To expand the thoracic cage during diastole
To pump blood with greater pressure
To pump blood through a smaller valve
- Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
- Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
- Assertion is correct but Reason is incorrect.
- Both Assertion and Reason are incorrect.
- single
- two
- three
- four