Smooth Muscle

Question 1

1. Smaller than ____ cells
2. ____ -shaped
3. Have ___- located ___
4. No ____ or ____ ___
5. Do no __ during development
6. connected by ___
7. have membrane invaginations called ___

Answer 1

Structure of smooth Muscle cell and tissue
skeletal muscle

spindle

central
nucleus

t- tubules
visible sarcomere

fuse

junctions

caveolae

Question 2

Main functions (4)

Answer 2

1. Line walls of hollow organs
2. responsible for involuntary movements
3. contraction/ relaxation of passageways to allow flow
4. contraction of organs

Question 3

____ muscle produces more ___and achieves greater change in ___.

Smooth muscle is regulated at the level of ____ ____ rather than ___ binding

contraction is _____ , ___ and able to ____

can contract ____

Answer 3

*main dif. from skeletal muscles *
smooth

force
size

myosin phosphorylation
troponin

involuntary
slower
endure phasically

Question 4

the ability to maintain contractibility over a wide range of length s

Answer 4

plasticity