Phys 4 Physiology of smooth muscle Flashcards
What are the different types of smooth muscle?
multi-unit smooth muscle
helps what type of control?
innervated by how many nerves?
examples?
Unitary smooth muscle
cell membranes contain what?
examples?
contraction of smooth muscle
how is it different from skeletal muscle?
more what type of filament?
contraction of smooth muscle
how does speed and force relate to skeletal muscle?
ATP demand?
what is quick def of latch mechanism?
What element is the major player in smooth muscle contraction?
how about molecule?
what increases the element levels in cytosol?
mechanism of contraction in smooth muscle
First step?
What allows calcium into the cell?
out?
mechanisms of contraction in smooth muscle
step 2
(how different to skeletal muscle?)
mechanisms of contraction in smooth muscle
3rd step
mechanisms of contraction in smooth muscle
4th step
mechanisms of contraction in smooth muscle
5th step
summary of contraction in smooth muscle
stimulation of smooth muscle vs skeletal muscle
Nerves, hormones, stretch, environmental ques
- This is very different from skeletal muscle in almost all facets
Nerve stimulation of smooth muscle
what are varicosities?
what do they release?
control of smooth muscle
Different ligands and NT and their effect?
control of smooth muscle
what molecules can do this?
What are some of the environmental ques that control smooth muscle?
what receptors or channels are used for Ca
what intermediates are used?
ATP’s role in contraction of smooth muscle?
Control of smooth muscle activity
what is resting membrane potential?
Action potentials occur in what smooth muscle?
what tow form?
Spike potentials
Slow waves
Plateaus
What is responsible for generating the action potential?
this means what for channels?
Latch mechanism and contraction
Length-tension relationship in smooth muscle
What are Calveoli?
