Double Circulation
Double Circulation: Overview
This Topic covers sub-topics such as Blood Vessels, Double Circulation, Pulmonary Artery, Systemic Circulation, Pulmonary Veins and, Hepatic Portal System
Important Questions on Double Circulation
Pulmonary artery differ from pulmonary vein in having:
Which one of the following vertebrate organs receives the oxygenated blood only?
A vein possesses a large lumen because
Study the following table:
| Part of heart | Location | Function | |
| A | Fossa ovalis | Interatrial septum | Directs blood from right atrium to left atrium |
| B | sinoatrial node | Wall of the right atrium | Initiation of systole |
| C | Atrio-ventricular node | Interventricular septum | Acts as pacemaker |
| D | Bicuspid valve | Left atrioventricular aperture | Directs blood to flow from left atrium to left ventricle |
Assertion (A): In human heart, deoxygenated blood always flows from right ventricle into pulmonary arch only
Reason (R): Mitral valve present at the base of pulmonary arch prevents the reverse flow of blood
The following characteristic features of circulatory system and heart types were found different animals, and
A) deoxygenated and oxygenated bloods are received by the heart separately but mixed blood will be pumped out from the heart
B) the oxygenated and deoxygenated bloods are received by the heart and the unmixed blood is pumped out separately
i) double circulation and -chambered heart
ii) incomplete double circulation and -chambered heart
iii) double circulation and -chambered heart
iv) incomplete double circulation and -chambered heart
Which of the following condition is correct?
Which of the following order is correct?
The hepatic portal vein drains blood to the liver from;
Hepatic portal vein is found in
Arteries are best defined as the vessels which
A portion of the cardiovascular system that transports oxygen-depleted blood from the heart to the lungs and brings oxygenated blood back to the heart is referred as
Which of the following statement is correct ?
What is right for all veins ?
In which of the following is the maximum urea levels present?
Which of the following statements is incorrect?
Where does the blood from head, neck and arms enter next through the heart?
Read the following statements and select the appropriate option:
Statement I: A portal vein does not carry blood directly to heart but forms a network of capillaries in another or intermediate organ before reaching the heart.
Statement II: Hepatic and hypophyseal portal systems are present in humans.
*Note: The corrected spelling of "hypophyseal" has been updated in the question.
Identify the incompatible option from the following:
What happens during pulmonary circulation?
