Chapter 18 – Body Fluids And Circulation

Which of the following cells does not exhibit phagocytotic 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

Cardiac activity could be moderated by the autonomous neural system. Tick the correct answer:

• a.The parasympathetic system stimulates heart rate and stroke volume
• b.The sympathetic system stimulates 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 lack nucleus in humans?

• a.Erythrocytes
• b.Neutrophils
• c.Eosinosphils
• d.Monocytes

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

• a.B-Lymphocytes
• b.T-Lymphocytes
• c.RBC
• d.Neutrophils

The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse is

• a.S A Node A V Node Purkinje fiber A V Bundle
• b.S A Node Purkinje fiber A V Node A V Bundle
• c.S A Node A V Node A V Bundle Purkinje fiber
• d.S A Node Purkinje fiber A V Bundle A V Node

The cells involved in inflammatory reactions are

• a.Basophils
• b.Neutrophils
• c.Eosinophils
• d.Lymphocytes BODY FLUIDS AND CIRCULATION 103

The second heart sound (dubb) is associated with the closure of

• a.Tricuspid valve
• b.Semilunar valves
• c.Bicuspid valve
• d.Tricuspid and bicuspid valves.

Which of the following correctly explains a phase/ event in cardiac cycle in a standard electrocardiogram?

• a.QRS complex indicates atrial contraction.
• b.QRS complex indicates ventricular contraction.
• c.Time between S and T represents atrial systole.
• d.P-wave indicates beginning of ventricular contraction.

Which of the following statements is incorrect?

• a.A person of ‘O’ blood group has anti ‘A’ and anti ‘B’ antibodies in his blood plasma.
• b.A person of ‘B’ blood group can’t donate blood to a person of ‘A’ blood group.
• c.Blood group is designated on the basis of the presence of antibodies in the blood plasma.
• d.A person of AB blood group is universal recipient.

What would be the cardiac output of a person having 72 heart beats per minute and a stroke volume of 50 ml?

• a.360 mL
• b.3600 mL
• c.7200 mL
• d.5000 mL

Match the terms given under Column ‘A’ with their functions given under Column ‘B’ and select the answer from the options given below: Column I Column II A. Lymphatic System i. Carries oxygenated blood B. Pulmonary vein ii. Immune Response C. Thrombocytes iii. To drain back the tissue fluid to the circulatory system D. Lymphocytes iv. Coagulation of blood Options:

• a.A-ii, B-i, C-iii, D-iv
• b.A-iii, B-i, C-iv, D-ii
• c.A-iii, B-i, C-iii, D-iv
• d.A-ii, B-i, C-iii, D-iv

Read the following statements and choose the correct option Statement 1 : Atria receive blood from all parts of the body which subsequently flows to ventricles. Statement 2 : Action potential generated at sino-atrial node passes from atria to ventricles.

• a.Action mentioned in Statement 1 is dependent on action mentioned in Statement 2
• b.Action mentioned in Statement 2 is dependent on action mentioned in Statement 1
• c.Action mentioned in Statements 1 and 2 are independent of each other.
• d.Action mentioned in Statements 1 and 2 are synchronous.