0
Action potentials are conducted into a skeletal muscle fiber by?
Wiki User
∙ 13y ago
C. neuromuscular junctions
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
The action potential is conducted into a skeletal muscle fiber by?
neuromuscular junctions Action potentials conduct down T tubules into skeletal muscles
What is the duration of action potential of skeletal muscle?
Action potential duration in skeletal muscle is around 2 - 5 milliseconds.
What action is exerted by the muscle on the bone?
skeletal
How can gradation of skeletal muscle contraction be accomplished?
controlled output of action potentials, progressive recruitment of motor units, control of the rate of attachment/reattachment of actin and myosin heads and the power stroke rate
Is muscle action be voluntary?
We have three types of muscle tissue; smooth, cardiac, and skeletal. Skeletal muscle tissue is the only one of the three that are voluntary.
What site of action for skeletal muscle relaxants is the?
limbic system
Explain the source of signals detected by the EMG electrodes?
Action potentials along the muscle fibers
What cells have the ability to respond to stimuli by generating signals such as action potentials?
neurons and muscle cells
Which electrolytes are important in action potentials and the excitability of nervous and muscle tissue?
Na,K and Ca
What you mean by autorhythmicity?
The pacemaker is known as the SA node (sinotrial) and it generates action potentials to the AV node and then to the bundle of his down to the purkinje fibers. The branching of cardiac muscle tissue and the intercalated discs allow action potentials to propagate to other cardiac mt cells. The autorhythmicity of the heart is attributed to the fact that it creates its own action potentials from the SA node and can be generated independently from the rest of the body. The heart's autorhythmicity also prevents it from reaching tetanus (like a skeletal muscle does), because myocardial tissue only allows a certain amount of action potentials through before it reaches its absolute refractory period when it comes to a plateau and after the wave drops again and gets hit with another action potential it has already rested.
Which muscle type is voluntary in action?
The skeletal muscle is the only type of muscle which is voluntary.
What must be pumped in order to move by the action of the skeletal muscle?
lymph
