MEDIUM
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IMPORTANT
Earn 100
Read the following statements and select the correct ones.
(i) Nodal tissue is specialised cardiac musculature in human heart which has the ability to generate action potential due to an external stimuli.
(ii) Position of SAN - right corner of right atrium
(iii) Position of AVN - right corner of ventricle
(iv) AV bundle continues from AVN
(v) Purkinje fibres are modified cardiac muscle fibres that originate from the atrioventricular node and spread into the two ventricles.
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Important Questions on Body Fluids and Circulation
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The given figure illustrates a section through the human heart.
Which labelled part represents the site for the generation of action potential in human heart?
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Chordae tendineae are found in
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The problem of electrical discontinuity caused in the normal heart by the connective tissue, separating the atria from the ventricles is solved by
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Match column I with column II and select the correct option from the codes given below.
| Column I | Column II | ||
|---|---|---|---|
| RBC | Coagulation | ||
| Antibody | Immunity | ||
| Platelets | Contraction | ||
| Systole | Gas transport | ||
| Hypertension |
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Blood enters the heart because muscles of the
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During ventricular systole
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If due to some injury the chordae tendineae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect?
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In humans, blood passes from the post caval to the diastolic right atrium of heart due to
