examples of multiunit smooth muscle are
1. Utreus and alimentary canal
2. Urinary bladder and Iris
3. Iris and arrector pilli muscle
4. Uterus and arrector pilli muscle
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iris and arrector pilli muscle
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2. Urinary bladder and Iris
Explanation:
Smooth muscle cells are found in the walls of hollow organs, including the stomach, intestines, urinary bladder and uterus, and in the walls of passageways, such as the arteries and veins of the circulatory system, and the tracts of the respiratory, urinary, and reproductive systems. These cells are also present in the eyes and are able to change the size of the iris and alter the shape of the lens. In the skin, smooth muscle cells cause hair to stand erect in response to cold temperature or fear.
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