Tetany is the medical term meaning inability to relax the muscles.
Contraction is the medical term meaning the normal shortening or tightening of a muscle.
Hiccough or Hiccup.Singultus is the medical term meaning involuntary contraction of the diaphragm. The lay term is hiccup.
Anencephalic is the medical term meaning without a brain.
The medical term for a hormone that stimulates contraction of the uterus during labor is oxytocin.
Ataxic is the medical term meaning without muscular coordination.
Contracture or contraction
Tetany (or tetanus, not to be confused with the disease called tetanus) is sustained contraction without any evidence of relaxation, often due to repeated stimulation.
Angiospasm is sudden contraction of a blood vessel. In contrast, vasoconstriction is the normal process of contraction of a blood vessel.VasoconstrictionAngiospasm
Pulse
Objective is the medical term meaning without emotion.
Myotonia