Question

The diagram given here is the standard ECG of a normal person the $$P$$-wave represents the:
Body Fluids and Circulation mcq question image

A. Initiation of the ventricular contraction
B. Beginning of the systole
C. End of systole
D. Contraction of both the atria  
Answer :   Contraction of both the atria

Releted MCQ Question on
Zoology >> Body Fluids and Circulation

Releted Question 1

Adult human RBCs are enucleated. Which of the following statement(s) is/are most appropriate explanation for this feature?
(1) They do not need to reproduce
(2) They are somatic cells
(3) They do not metabolize
(4) All their internal space is available for oxygen transport

A. only (1)
B. (1), (3) and (4)
C. (2) and (3)
D. only (4)
View Answer
Releted Question 2

Reduction in pH of blood will

A. reduce the rate of heart beat
B. reduce the blood supply to the brain
C. decrease the affinity of haemoglobin with oxygen
D. release bicarbonate ions by the liver
View Answer
Releted Question 3

Which one of the following is correct ?

A. Serum = Blood + Fibrinogen
B. Lymph = Plasma + RBC + WBC
C. Blood = Plasma + RBC + WBC
D. Plasma = Blood - Lymphocytes
View Answer
Releted Question 4

Erythropoiesis starts in :

A. Liver
B. Spleen
C. Red bone marrow
D. Kidney
View Answer

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Body Fluids and Circulation

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BotanyThe Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisonTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and DevelopmentReproduction in OrganismsSexual Reproduction in Flowering PlantsPrinciples of Inheritance and VariationMolecular Basis of InheritanceStrategies for Enhancement in Food ProductionMicrobes in Human WelfareOrganisms and PopulationsEcosystemBiodiversity and ConservationEnvironmental IssuesBotany Miscellaneous
ZoologyAnimal KingdomStructural Organisation in AnimalsBiomoleculesDigestion and AbsorptionBreathing and Exchange of GasesBody Fluids and CirculationExcretory Products and Their EliminationLocomotion and MovementNeural Control and CoordinationChemical Coordination and IntegrationHuman ReproductionReproductive HealthEvolutionHuman Health and DiseasesBiotechnology: Principles and ProcessesBiotechnology and its ApplicationsZoology Miscellaneous