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03/09/2020 1:20 pm
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Contractile tissues have the following features
(i) Mesodermal in origin
(ii) They contain stretch receptors.
(iii) Rhythmic contractions are seen in them
(iv) They do not fatigue during the life of the animal
Which of the above are characteristics of sphincters?
(a) All the four
(b) Only (i), (ii) and (iii)
(c) Only (i), (ii) and (iv)
(d) Only (i), (iii) and (iv)
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03/09/2020 1:22 pm
(b) Only (i), (ii) and (iii)