Please answer 1-5 Date What is the correct sequence of the electrical activity o

Question

Please answer 1-5 Date What is the correct sequence of the electrical activity of the heart? A SA node > Bundle branches >Purkinje fibres 8. AV node > SA node >Bundle branches >Purkinje fibres . AV node C. SA nodeAV node-> Bundle branches-> Purkinje fires node-> Bundle branches Purkinje fibres > SA node E. Purkinje fibres Bundle branches > AV node >SA node D. AV 2. The symplast is the continuum of cytoplasm connected by A. Extracellular spaces. C. Plasmodesmata. D. Interstitial route. B. Apoplastic route. Refer to Fiqure 1 of the human heart to answer questions 3-5. 3. What prevents backflow of blood from 4 and 3 into the ventricles? Figure 1 A. Bicuspid valves B. Tricuspid valves C. Semilunar valves D. Atrioventricular valves 3 2 4 4. Structure 4 is a part of thecirculation which carries- -to 5 the A. Pulmonary, oxygenated blood, lungs B. Systemic, oxygenated blood, tissues C. Pulmonary, deoxygenated blood, lungs D. Systemic, deoxygenated blood, tissues 6 circulation which carries Structure 3 is a part of the to the 5. A. Pulmonary, oxygenated blood, lungs B. Systemic, oxygenated blood, tissues C. Pulmonary, deoxygenated blood, lungs D. Systemic, deoxygenated blood, tissues

Explanation / Answer

question 1- AV node- SA node-bundle branches-purkinjii fibers

question 2- apoplast route

question 3- D. artioventricular valve

queation 4- C pulmonary ,deoxygenated blood, lungs

question 5- A Pulmonary, oxygenated blood, lungs

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