Fibres with tapering ends and spindle shape are seen in _______.

Striated muscle

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Cardiac muscle

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Skeletal muscle

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Smooth muscle

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Solution

The correct option is B Smooth muscle
Smooth muscles have fibers with tapering ends and spindle shape. Smooth muscles occur in the gut and other internal organs. These are not under voluntary control.
The fibres of striated muscle have a cylindrical shape with blunt ends, whereas those in smooth muscle can be described as being spindle-like with tapered ends. Cardiac muscle cells are also cylindrical.
Hence the correct option is D.

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Name the following :

(a) Multinucleate muscle fibre ;

(b) Spindle shape muscle fibre.

\begin{matrix} Skeletal muscle & Smooth muscle Movement type & i.____ & Involuntary Structure & Cylindrical and multinucleated & ii.____ \end{matrix}

	Column - I (Types of muscle fibres)		Column - II (Features)
A.		(i)	It consists of branched and uninucleate muscle fibres
B.		(ii)	It is voluntary in nature
C.		(iii)	It occurs as bundle or sheets of spindle shaped cells or sheets of spindle shaped cells
		(iv)	It is involuntary in nature
		(v)	It soon gets fatigued

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