Smooth Muscle Physiology — Flashcards

_____ smooth muscle systems are innervated by a single nerve ending (en passant endings of nerve fibers)

_____-unit smooth muscle systems respond to hormones and other circulating systems

Resting membrane potential of a _____ muscle is -20 to -65 mV

What type of muscle fibres do not have striations, troponin or T tubules?_____

A sustained contraction with little expenditure of energy is made possible by a _____ mechanism in smooth muscle

Sympathetic stimulation (norepinephrine) of a smooth muscle produces _____ potentials and relaxation.

Chemical Events during Muscle Contraction: No answer _____

Fast twitch muscle fibers are _____ due to decreased myoglobin concentration

Hint: (color)

_____ 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)