Nerve and Muscle Physiology — Flashcards

Chemical Events during Muscle Contraction: No answer _____

After the power stroke in muscle contraction, binding of a new _____ molecule causes detachment of the myosin head from the actin filament

_____ is absent in smooth muscle but present in skeletal muscle

Hint: Micro-component

Slow twitch muscle fibers are _____ due to increased myoglobin concentration

Hint: (color)

Fast twitch muscle fibers are _____ due to decreased myoglobin concentration

Hint: (color)

Once a _____ change is induced in the dihydropyridine receptor, it opens the ryanodine receptor which releases Ca2+.

_____ enters smooth muscle cells via L-type Ca2+ channels and binds to calmodulin, leading to smooth muscle contraction.

During muscle contraction:- the _____ and I bands, and distance between Z bands, are shortened- the A band remains the same length

_____ motoneuron lesions may cause decreased tone

The key mediators of pain in inflammation are _____ and PGE2, which sensitize nerve endings