MEDICAL PHYSIOLOGY

Detailed explanation-1: -When the ongoing forceful muscle contraction is sustained continuously without any relaxation, the type of contraction is termed as tetanic contraction. This occurs when the motor units of muscles are maximally stimulated by their motor neurons.

Detailed explanation-2: -A tetanic contraction (also called tetanized state, tetanus, or physiologic tetanus, the latter to differentiate from the disease called tetanus) is a sustained muscle contraction evoked when the motor nerve that innervates a skeletal muscle emits action potentials at a very high rate.

Detailed explanation-3: -Motor Function A single pulse applied to muscle tissue will result in a single contraction or twitch. As pulse frequency increases the twitches become more frequent until they merge into a sustained contraction known as tetanic contraction or spasm. This may occur at a frequency of about 10 Hz.

Detailed explanation-4: -Tetany is a symptom that involves involuntary muscle contractions and overly stimulated peripheral nerves. It’s caused by electrolyte imbalances-most often low blood calcium levels. It’s important to talk to your healthcare provider if you’re experiencing tetany.

Detailed explanation-5: -In tetanic contractions, the force increases within several (fast motor units) or even several tens (slow units) of initial stimuli, and then stabilizes at a certain level.