Multiple Choice QuestionsAdult human RBCs are enucleate. Which of the following statement(s) is/are most appropriate explanation for this feature?
(a) They do not need to reproduce
(b) They are somatic cells
(c) They do not metabolize
(d) All their internal space is available for oxygen
transport
Only (d)
Only (a)
(a), (c) and (d)
(a), (c) and (d)
Match the items given in Column I with those in Column II and select the correct option given below:
| column i | column ii | ||
| a | Tricuspid valve | i | Between left atrium and left ventricle |
| b | Bicuspid valve | ii | Between right ventricle and pulmonary artery |
| c | Semilunar valve | iii | Between right atrium and right ventricle |
| a | b | c |
| iii | i | ii |
| a | b | c |
| i | iii | ii |
| a | b | c |
| ii | i | iii |
| a | b | c |
| i | ii | iii |
Match the items given in Column I with those in Column II and select the correct option given below:
| Column i | Column ii | ||
| a | Tidal volume | i | 2500 – 3000 mL |
| b | Inspiratory Reserve volume | ii | 1100 – 1200 mL |
| c | Expiratory Reserve volume | iii | 500 – 550 mL |
| d | Residual volume | iv | 1000 – 1100 mL |
| a | b | c | d |
| iii | ii | i | iv |
| a | b | c | d |
| iii | i | iv | ii |
| a | b | c | d |
| iv | iii | ii | i |
| a | b | c | d |
| i | iv | ii | iii |
Match the items given in Column I with those in Column II and select the correct option given below:
| Column I | Column II | ||
| a | Fibrinogen | i | Osmotic balance |
| b | Globulin | ii | Blood clotting |
| c | Albumin | iii | Defence mechanism |
| a | b | c |
| iii | ii | i |
| a | b | c |
| i | ii | iii |
| a | b | c |
| ii | iii | i |
| a | b | c |
| i | ii | iii |
Intrinsic and extrinsic pathways of blood clotting the interlinked at the activation steps of which of the following factors?
Factor IX
Factor IV
Factor X
Factor XIII-a
Foramen ovale
connects the two atria in the foetal heart.
is a condition in which the heart valves do not completely close
is a shallow depression in the inter-ventricular septum
is a connection between the pulmonary trunk and the aorta in the foetus.
Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin?
Neutrophils
Basophils
Eosinophils
Monocytes
B.
Basophils
The basophils are probably like mast cells of connective tissue. They release heparin histamine and serotonin. Their nucleus is usually three-lobed and their granules take basic stain strongly.
Monocytes are the largest of all types of leucocytes. Their nucleus is bean-shaped. They are motile and phagocytic in nature. They engulf bacteria and cellular debris. Generally, they will change into macrophages after entering tissue spaces. Eosinophils have a two-lobed nucleus. They are non-phagocytic and help in dissolving a blood clot. Their number increases in people with allergic conditions such as asthma or high fever.
Neutrophils are most numerous of all leucocytes They eat harmful germs and are, therefore, phagocytic in nature. Their nucleus is many lobed and strain weakly with both and basic stains.
If a child is of O blood group and his father is of B blood group, the genotype of father is
IO IO
IA IB
IO IB
IO IA
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