Smooth muscles are the type of muscle that contracts and relax to control the movement of the contents.
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What are Smooth muscles?
Because it lacks sarcomeres and as a result, striations, smooth muscle is an involuntary non-striated muscle (bands or stripes). Its two subgroups are single-unit smooth muscle and multi-unit smooth muscle. A syncytium is the collective contraction of the sheet or bundle of smooth muscle cells that make up a single-unit muscle.
Smooth muscle makes up the walls of hollow organs including the stomach, intestines, bladder, and uterus as well as the blood and lymphatic vessels, as well as the tracts of the respiratory, urinary, and reproductive systems. The ciliary muscle, a type of smooth muscle present in the eyes, changes the shape of the lens by dilation and contraction of the iris.
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Two weeks before her menstrual period, margeret often suffers from PMS. The abbreviation PMS stands for Premenstrual syndrome .
Premenstrual syndrome is a combination of emotional, physical, psychological, and mood disturbances that occur after a woman's ovulation, typically ending with the onset of her menstrual flow. The most common mood related symptoms are irritability, depression, crying, oversensitivity, and mood swings.
Pollination.....................
