Smooth muscle Flashcards Preview

Fundies First Module--First Exam > Smooth muscle > Flashcards

Flashcards in Smooth muscle Deck (18):
1

main function of smooth muscle

regualte and promote movement of fluids, expel contents of organs, move visceral structures

2

high or low metabolic economy

high--little energy consumption

3

size of smooth muscle cells

small cells--very small structures (blood vessels)

4

smooth muscles

not discrete cells like skeletal -- components of larger organs

5

smooth muscle locations

esophagus, vessels, urinary tract, digestive tract, airway

6

fast or slow cross-bridging

slow

7

smooth muscle functional types

single unit--all contract as one unit--gap junctions connect (fast electrical communication)
multi unit--lots of autonomic innervation for each cell

8

no T tubules

in smooth muscle

9

muscles of iris

smooth muscle--circular (parasymp) and radial (symp)

10

smooth muscle stretch

stretches well (bladder, uterus, stomach)

11

Ca binds to

calmodulin in smooth muscle--dif then skeletal and cardiac--ATP not as important

12

calmodulin CaM

most important player in smooth muscle contraction

13

smooth muscle in airway

asthma--increased airway smooth muscle--albuteral relaxes

14

Mediates smooth muscle contraction

Calmodulin

15

Smooth muscles areV_______

Viscoelastic

16

Long c_______

Contractions

17

_________ cris-cross the cell

Myofilaments

18

Attach the plasma cell membrane via

Dense bodies