How would the structure of smooth muscle cells help determine their function?
there are two types of smooth muscles visceral, or unitary, smooth muscle found in the walls of hollow organs (e.g., small blood vessels, digestive tract, urinary system, & reproductive system) multiple fibers contract as a unit (because impulses travel easily across gap junctions from cell to cell) &, in some cases, are self-excitable (generate spontaneous action potentials & contractions) 2 – multiunit smooth muscle consists of motor units that are activated by nervous stimulation found in the walls of large blood vessels, in the eye (adusting the shape of the lens to permit accommodation & the size of the pupil to adjust the amount of light entering the eye), & at the base of hair follicle (the ‘goose bump’ muscles)
