Q. No.Which one of the following human organs is often called the "graveyard" of RBCs?
1.
Kidney
2.
Spleen
3.
Liver
4.
Gall bladder
Fastest distribution of some injectible material / medicine and with no risk of any kind can be achieved by injecting it into the:
1. arteries
2. veins
3. lymph vessels
4. muscles
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Given below are four statements (a-d) regarding human blood circulatory system:
| (a) | Arteries are thick-walled and have narrow lumen as compared to veins |
| (b) | Angina is acute chest pain when the blood circulation to the brain is reduced |
| (c) | Persons with blood group AB can donate blood to any person with any blood group under ABO system |
| (d) | Calcium ions play a very important role in blood clotting |
Which two of the above statements are correct?
| 1. | (a) and (b) | 2. | (b) and (c) |
| 3. | (c) and (d) | 4. | (a) and (d) |
The haemoglobin content per 100 ml of blood of a normal healthy human adult is:
| 1. | 25-30 g | 2. | 17-20g |
| 3. | 12-16 g | 4. | 5-11 |
Given below is the ECG of a normal human. Which one of its components is correctly interpreted below?
| 1. | Peak P-Initiation of left atrial contraction only |
| 2. | Complex QRS-One complete pulse |
| 3. | Peak T-Initiation of total cardiac contraction |
| 4. | Peak P and Peak R together-systolic and diastolic blood pressures |
| 1. | B - Capillary - thin without muscle layers and wall two-cell layer thick |
| 2. | C - Vein - thin-walled and blood flows in jerks/spurts |
| 3. | D - Pulmonary vein - takes oxygenated blood to heart PO2=95 mm Hg |
| 4. | A - Artery- thick-walled and blood flows evenly |
| Blood cell | Characteristics | |
| 1. | Basophils | Secrete serotonin |
| 2. | B-lymphocytes | form about 20% of blood cells involved in immune response |
| 3. | Neutrophils | Most abundant blood cells, phagocytic |
| 4. | Monocytes | Life spans 3 days, produce antibodies |
Examination of the blood of a person suspected of having anaemia, shows large, immature, nucleated erythrocytes without haemoglobin. Supplementing his diet with which of the following, is likely to alleviate his symptoms?
| 1. | Thiamine | 2. | Folic acid and cobalamine |
| 3. | Riboflavin | 4. | Iron compounds |
A drop of each of the following is placed separately on four slides. Which of them will not coagulate?
| 1. | blood plasma |
| 2. | blood serum |
| 3. | Sample from the thoracic duct of the lymphatic system |
| 4. | Whole blood from the pulmonary vein |
In humans, blood passes from the post caval to the diastolic right atrium of heart due to:
1. pushing open of the venous valves
2. suction pull
3. stimulation of the sino auricular node
4. pressure difference between the caval and atrium
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