MCQ
The sinu-auricular valve occurs
- AIn the sinus venosus
- ✓In the edges of sinu-auricular aperture
- CIn the truncus arteriosus
- DAt the auriculo-ventricular aperture
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$(i)$ It is a contractile tissue present only in the heart.
$(ii)$ Cell junctions fuse the plasma membranes of these cells and make them stick together.
$(iii)$ Communication juntions at some fusion points allow the cells to contract as a unit, i.e., when one cell receives a signal to contract, its neighbours are also stimulated to contract.
Which of the following type of tissue is being described by the above statements?