The USDA created the food pyramid to encourage a healthy diet, but the USDA also has a mission to encourage agricultural products grown in the US. There can be a LOT of conflict between those two goals. So the food pyramid (ahem, I mean MyPlate) is not simply an objective summary of the available evidence.
The stretch reflex (myotatic reflex) is a muscle contraction in response to stretching within the muscle. It is a monosynaptic reflex which provides automatic regulation of skeletal muscle length. When a muscle lengthens, the muscle spindle is stretched and its nerve activity increases.
The plantar reflex is a reflex elicited when the sole of the foot is stimulated with a blunt instrument.The reflex can take one of two forms. In normal adults the plantar reflex causes a downward response of the hallux (flexion).An upward response (extension) of the hallux is known as the Koch sign, or as the Babinski response or Babinski sign, named after the neurologist Joseph Babinski.he plantar reflex is a reflex elicited when the sole of the foot is stimulated with a blunt instrument.