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STD 11 - 17. Locomotion and movement — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 17. Locomotion and movement4 Marks
MCQ
Which of the following is an example of multiunit smooth muscles?
  • A
    Smooth muscle in uterine wall
  • B
    Smooth muscle with the intestine
  • C
    Masseter muscle of the jaw
  • ✓
    Arrector pili muscle of skin
✓

Answer

Correct option: D.
Arrector pili muscle of skin
d
Multiunit smooth muscles fibre : The smooth muscle cells in an organ, behave independently (each cell contracts and relaxes on its own).
$e.g.$, Vascular smooth muscle
Single unit smooth muscle : Cells are interconnected; all contract as a single unit.
$e.g.$, GI tract
Urinogenital tract.

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