Cardiac activity could be moderated by the autonomous neural system.

Tick the correct answer.
 

1.	The parasympathetic system stimulates heart rate and stroke volume
2.	The sympathetic system stimulates heart rate and stroke volume
3.	The parasympathetic system decreases the heart rate but increase stroke volume
4.	The sympathetic system decreases the heart rate but increase stroke volume

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

1. heparin and calcium ions

2. calcium ions and platelet factors

3. oxalates and citrates

4. 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.

1. Depolarisation of atria

2. Repolarisation of atria

3. Depolarisation of ventricles

4. Repolarisation of ventricles

Which of the following type of cells lack a nucleus?

1. Lymphocyte

2. Neutrophils

3. Eosinophils

4. Erythrocytes

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

1. B-lymphocytes

2. T-lymphocytes

3. RBC

4. neutrophils

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

Agranulocytes responsible for the immune response of the body are:

1. basophils

2. neutrophils

3. eosinophils

4. lymphocytes

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

1. tricuspid valve

2. semilunar valve

3. bicuspid valve

4. tricuspid and bicuspid valve

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

1. QRS complex indicates atrial contraction.

2. QRS complex indicates ventricular contraction.

3. Time between S and T represents atrial systole.

4. P-wave indicates beginning of ventricular contraction.

Which of the following statements is incorrect?