MCQ
Anamnestic response
- AEncounter a pathogen first time
- ✓Encounter pathogen second time
- C$A$ and $B$ both
- DNone of the above
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$I.$ pumping of $C a^{2+i i}$ ions in sarcoplasmic reticulum
$II.$ presence of $ATP$
$III.$ confirmational changes in troponin and masking the actin filament
Option containing correct statement is
$(i)$ 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?