early deceleration in fetal heart rate monitoring, a transient decrease in heart rate that coincides with the onset of a uterine contraction. late deceleration in fetal heart rate monitoring, a transient decrease in heart rate occurring at or after the peak of a uterine contraction, which may indicate fetal hypoxia.
DIFFERENCES:   Internal regulators only respond only to the inside, while external  regulators respond only to the outside.   SIMILARITIES:   Both internal and exâ¦ternal regulators can stop their processes.
ï· The body uses 2 types of feedback systems to regulate its internal environment: 1. Negative Feedback (compensates for change) - a mechanism of homeostatic response by which the output of a system reverses a change in a variable bringing the variable back to within normal range.