1. This statement is true regarding platelets :   Platelets contain an ill-defined nucleus.   Platelets contain many nuclei.   Platelets contain single nucleus.   Platelets do not contain nucleus.   Hint Hint       2. Sphygmomanometer is an instrument used to record   Respiratory rate   Heart rate   Blood pressure   Electrical activity of heart   Half-n-half Clue   3. This statement is not true :   Left side of the heart contains oxygenated blood.   Right ventricle pumps blood to various parts of the body.   Valves are present between auricles and ventricles to prevent backflow of blood.   Pulmonary veins carry oxygenated blood.   Hint       4. This statement is not true regarding hemoglobin :   Hemoglobin carries oxygen.   Percentage of hemoglobin in a healthy young man is 10/12 gm%.    Hemoglobin is found in RBCs.    Hemoglobin deficiency leads to anemia.   Half-n-half Clue   5. Which of these does not cause an increase in pulse rate?   Fever   Anxiety   Sleep   Exercise   Hint       6. Deficiency of hemoglobin is known as anemia.   True   False   7. This statement is not true :   Veins are thin-walled.   Veins return blood from the various parts of the body to the heart.   Veins contain valves.   All veins carry deoxygenated blood.   Hint