Body Fluids and Circulation Chapter-Wise Test 8

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which condition occurs due to Rh incompatibility during pregnancy?

Thalassemia
Sickle cell anemia
Erythroblastosis fetalis
Hemophilia
3

Erythroblastosis fetalis occurs when an Rh-negative mother carries an Rh-positive fetus.

Which of the following statements about blood clotting is correct?

Thrombin converts fibrin into fibrinogen.
Platelets release clotting factors.
Clotting requires sodium ions.
Plasma does not contain clotting factors.
2

Platelets release clotting factors to initiate the coagulation cascade.

Which of the following is incorrect about the hepatic portal system?

It carries nutrient-rich blood from the intestine to the liver.
It bypasses the heart before reaching the liver.
It directly carries oxygenated blood to the liver.
It allows the liver to regulate absorbed nutrients before they enter systemic circulation.
3

The hepatic portal vein carries nutrient-rich, deoxygenated blood from the intestine to the liver, not oxygenated blood.

Which of the following is correct about the heart valves?

The bicuspid valve is found on the right side of the heart.
The pulmonary valve prevents backflow into the right ventricle.
The tricuspid valve separates the left atrium and left ventricle.
The aortic valve prevents blood from entering the lungs.
2

The pulmonary valve prevents backflow of blood into the right ventricle after it enters the pulmonary artery.

Which of the following is a granulocyte?

Monocytes
Lymphocytes
Basophils
Both 2 and 3
3

Basophils are granulocytes, along with neutrophils and eosinophils, and play a role in inflammatory responses.

Which of the following is incorrect about ECG waves?

The P-wave represents atrial depolarization.
The QRS complex corresponds to ventricular contraction.
The T-wave represents ventricular repolarization.
The P-wave represents ventricular depolarization.
4

The P-wave represents atrial depolarization, while ventricular depolarization is represented by the QRS complex.

Which of the following is correct about the function of lymph nodes?

They filter out old red blood cells.
They help in immune response by trapping pathogens.
They produce platelets for blood clotting.
They store oxygen for circulation.
2

Lymph nodes trap pathogens and activate immune responses by producing WBCs.

Which of the following is incorrect about arteries?

Arteries carry blood away from the heart.
They have thick muscular walls to withstand high pressure.
All arteries carry oxygenated blood.
The aorta is the largest artery in the body.
3

Not all arteries carry oxygenated blood. The pulmonary artery carries deoxygenated blood from the right ventricle to the lungs.

Which heart sound is produced due to the closure of the AV valves?

Lub
Dub
Both Lub and Dub
None of the above
1

The first heart sound "Lub" is caused by the closure of the atrioventricular (AV) valves.

Which of the following is incorrect about hypertension?

Hypertension is characterized by high blood pressure.
It increases the risk of heart disease and stroke.
It has no connection with dietary habits or lifestyle.
It can damage blood vessels over time.
3

Hypertension is influenced by diet, lifestyle, and genetics, making healthy habits essential in its prevention.

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