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Unformatted text preview: egeneration is no problem.
MUCH WEAKER contractions -- fxn
to squeeze thing along gut.
THEY CAN STILL DIVIDE!!! Repair is absolutely
no problem! Fig. 10-1c NOT Z-lines like in the other two… SMOOTH MUSCLE can
speciﬁcally respond to hormones,
physiologically all smooth muscle is quite
diff. even tho they all LOOK the same..
for ex, during pregnancy,
uterus smooth muscle GROWS. Fig. 10-21 When thick/thin ﬁlaments slide
past, whole cell kind of shortens. like a worm --- nucleus goes to a more circular scrunched shape. Bundles of thin and thick filaments attach to dense bodies which
contain α-actinin and are sites of adhering junctions. When the
bundles contract the whole fiber shortens.
Gap junctions allow co-ordination of all the cells in large muscles....
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- Spring '14