1. | Fibrinogen is activated by the enzyme plasmin |
2. | Prothrombin is activated by the enzyme fibrinolysin |
3. | The basophils release certain factors which activate the mechanism of coagulation |
4. | Calcium ions play a very important role |
Statement I: | The coagulum is formed of network of threads called thrombins. |
Statement II: | Spleen is the graveyard of erythrocytes. |
1. | Increased ventricular pressure causes closing of the semilunar valves. |
2. | The atrio-ventricular node (AVN) generates an action potential to stimulate atrial contraction. |
3. | The tricuspid and the bicuspid valves open due to the pressure exerted by the simultaneous contraction of the atria. |
4. | Blood moves freely from atrium to the ventricle during joint diastole. |
Inadequate supply of oxygen to heart muscles leads to a symptom of acute chest pain. This disorder of the circulatory system is identified as:
1. Angina pectoris
2. Cardiac arrest
3. Heart failure
4. Coronary Heart Disease