Body Fluids and Circulation Chapter-Wise Test 9

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following is incorrect regarding the function of hemoglobin?

Hemoglobin binds oxygen in the lungs.
Hemoglobin does not play a role in carbon dioxide transport.
Hemoglobin contains iron.
Hemoglobin is found in red blood cells.
2

Hemoglobin plays a role in transporting both oxygen and carbon dioxide in the blood.

Which of the following is the universal recipient blood group?

A
B
AB
O
3

Blood group AB individuals are universal recipients as they lack anti-A and anti-B antibodies.

Which condition results when the SA node fails to function properly?

Hypertension
Bradycardia
Anemia
Thrombosis
2

Bradycardia is a condition where the heart rate is slower than normal due to SA node dysfunction.

Which of the following statements about veins is incorrect?

Veins carry blood toward the heart.
Veins always carry deoxygenated blood.
Veins have valves to prevent backflow of blood.
Veins have thinner walls than arteries.
2

Not all veins carry deoxygenated blood. Pulmonary veins carry oxygenated blood from the lungs to the heart.

Which of the following is correct about the pulmonary circulation?

It carries deoxygenated blood from the lungs to the heart.
It supplies oxygenated blood to body tissues.
It involves the pulmonary arteries and veins.
It includes the aorta and systemic capillaries.
3

Pulmonary circulation involves pulmonary arteries and veins, carrying blood between the heart and lungs for oxygenation.

Which blood disorder is caused by reduced hemoglobin levels?

Polycythemia
Anemia
Thrombocytosis
Leukocytosis
2

Anemia is a condition characterized by reduced hemoglobin levels, leading to decreased oxygen transport.

Which of the following statements about the human heart is incorrect?

The right atrium receives deoxygenated blood from the body.
The left ventricle pumps blood into the pulmonary artery.
The SA node acts as the pacemaker of the heart.
The heart has four chambers.
2

The left ventricle pumps blood into the aorta, not the pulmonary artery. The right ventricle pumps blood into the pulmonary artery.

Which of the following statements about blood clotting is incorrect?

Thrombin converts fibrinogen into fibrin.
Platelets release clotting factors.
Calcium ions are not required for blood clotting.
A clot is also called a thrombus.
3

Calcium ions are essential for the activation of clotting factors in the blood clotting process.

Which of the following conditions is characterized by an irregular heartbeat?

Bradycardia
Tachycardia
Arrhythmia
Angina
3

Arrhythmia is a condition where the heartbeat is irregular, either too fast or too slow.

Which of the following is correct about erythropoiesis?

Erythropoiesis occurs in the spleen of adults.
Iron is essential for erythropoiesis.
Erythropoietin is released by the liver to stimulate RBC production.
Erythrocytes retain their nucleus throughout their lifespan.
2

Iron is required for the synthesis of hemoglobin, which is crucial for erythropoiesis (RBC formation).

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