Inter-atrial septum in the human heart is:
1. | a thin muscular wall | 2. | a thick muscular wall |
3. | a thin membranous wall | 4. | a thick membranous wall |
The least common of WBCs in the human blood are:
1. | Eosinophils | 2. | Lymphocytes |
3. | Neutrophils | 4. | Basophils |
The enzyme that activates fibrinogens in the blood is:
1. | Thromboplastin | 2. | Thrombokinase |
3. | Thrombin | 4. | Plasmin |
Blood enters the heart because muscles of the:
1. | ventricles relax | 2. | ventricles contract |
3. | atria relax | 4. | atria contract |
The portal systems seen in humans include:
I: Hepatic portal system
II: Renal portal system
III: Hypothalamic Hypophyseal portal system
1. | I and II only | 2. | I and III only |
3. | II and III only | 4. | I, II and III |
The period of systole is represented on surface ECG as between:
1. Beginning of P wave and beginning of Q wave
2. End of S wave and beginning of T wave
3. Shortly after Q wave and end of the T wave
4. Two successive R waves
Which of the following can be called as a ‘cascade’ process?
1. | Micturition reflex |
2. | Formation of cross bridges in skeletal muscle contraction |
3. | Coagulation of blood |
4. | Regulation of respiration |
The deoxygenated blood from the cardiac muscles is returned to the right atrium by:
1. | coronary sinus | 2. | pre-caval vein |
3. | post-caval vein | 4. | pulmonary veins |
Identify the incorrectly matched pair:
1. Average duration of a cardiac cycle: 0.8 sec
2. Stroke volume of each ventricle: 120 ml
3. Highest normal systolic blood pressure: 140 mm Hg
4. Highest normal diastolic blood pressure: 90 mm Hg
A person has type A antigen on RBC and anti-B antibodies in plasma. He can receive blood from a person with blood group:
1. | A and O | 2. | AB, A, B and O |
3. | B and O | 4. | Only O |