MEDICAL PHYSIOLOGY

Detailed explanation-1: -Fused tetanus is when there is no relaxation of the muscle fibers between stimuli and it occurs during a high rate of stimulation. A fused tetanic contraction is the strongest single-unit twitch in contraction. When tetanized, the contracting tension in the muscle remains constant in a steady state.

Detailed explanation-2: -This phenomenon of sustained contraction is called tetany. The length-tension relationship in muscle illustrates the tensions, or forces, produced from the cross-bridge cycle as a result of changes in muscle fiber length.

Detailed explanation-3: -tetanus: When the frequency of muscle contraction is such that the maximal force is tension is generated without any relaxation of the muscle. summation: The occurrence of additional twitch contractions before the previous twitch has completely relaxed.

Detailed explanation-4: -In neurobiology, a tetanic stimulation consists of a high-frequency sequence of individual stimulations of a neuron. It is associated with potentiation. High-frequency stimulation causes an increase in release called post-tetanic potentiation (Kandel 2003). This presynaptic event is caused by calcium influx.

Detailed explanation-5: -In isotonic contraction, the tension in the muscle remains constant despite a change in muscle length. This occurs when a muscle’s force of contraction matches the total load on the muscle.