Chapter 18: Body Fluids and Circulation

Which of the following cells does not exhibit phagocytosis activity?

a. Monocyte

b. Neutrophil

c. Basophil

d. Macrophage

One of the common symptoms observed in people infected with Dengue fever is

a. Significant decrease in RBC count

b. Significant decrease in WBC count

c. Significant decrease in platelets count

d. Significant increase in platelets count

Which among the followings is correct during each cardiac cycle?

a. The volume of blood pumped out by the Rt and Lt ventricles is same.

b. The volume of blood pumped out by the Rt and Lt ventricles is different

c. The volume of blood received by each atrium is different

d. The volume of blood received by the aorta and pulmonary artery is different

The cardiac activity could be moderated by the autonomous neural system.

Tick the correct answer:

a. The parasympathetic system stimulates the heart rate and stroke volume

b. The sympathetic system stimulates the heart rate and stroke volume

c. The parasympathetic system decreases the heart rate but increases stroke volume

d. The sympathetic system decreases the heart rate but increases stroke volume

Mark the pair of substances among the following which is essential for coagulation of blood.

a. Heparin and calcium ions

b. Calcium ions and platelet factors

c. Oxalates and citrates

d. Platelet factors and heparin

ECG depicts the depolarisation and repolarisation processes during the cardiac cycle. In the ECG of a normal healthy individual one of the following waves is not represented.

a. Depolarisation of atria

b. Repolarisation of atria

c. Depolarisation of ventricles

d. Repolarisation of ventricles

Which one of the following types of cells lacks nucleus in humans?

a. Erythrocytes

b. Neutrophils

c. Eosinophils

d. MonocytesSolution:

Option (a) and (d) are the answers.

Which one of the following blood cells are involved in antibody production?

a. B-Lymphocytes

b. T-Lymphocytes

c. RBC

d. Neutrophils

The cardiac impulse is initiated and conducted further up to ventricle.

The correct sequence of conduction of impulse is

a. S A Node A V Node Purkinje fibre A V Bundle

b. S A Node Purkinje fibre A V Node A V Bundle

c. S A Node A V Node A V Bundle Purkinje fibre

d. S A Node Purkinje fibre A V Bundle A V Node

The cells involved in inflammatory reactions are

a. Basophils

b. Neutrophils

c. Eosinophils

d. Lymphocytes