Laws Flashcards
What is Sherrington’s Law?
1) Every posterior spinal nerve root supplies a specific region of skin through fibers from adjacent segments
2) When nerve receives an impulse to contract (agonist) then the antagonist relaxes
What is Wolff’s Law?
Bones tend to deform along lines of force placed upon them, this is also true of soft tissues and of organs
What is Head’s Law?
Hint: the head of a penis is very sensitive
When a painful stimulus is applied to a body part of low sensitivity that is in central connection with a point of higher sensitivity, the pain is felt at the point of higher sensitivity rather than at the point where the stimulus is applied
What is Hilton’s Law?
Hint: Paris Hilton is very superficial
Any nerve stimulating a muscle producing a movement at a joint, also innervates the joint and skin over it
What is Hooke’s Law?
Hint: it has close relation to Wolff’s Law
Any strain (deformation) placed upon an elastic body is in direct proportion to the stress (force) placed upon it
What is the Law of Fasciliation?
The maintenance of a pool of neurons in a state of sub-threshold excitation, in this state, less afferent stimulation is required to trigger the discharge of impulses
What is Lovett’s Law?
An observed association between the superior and inferior vertebrae, which are paired two by two. The cervical and superior thoracic biomechanics act in a synchronous manner with the lumbar and inferior thoracic biomechanics.
(For example: if C1 is in a right posterior positional lesion, L5 also moves into a right posterior position. In this case, L5 is the “Lovett partner” of C1. The treatment of L5 helps to stabilize C1 and the skull by changing the lines of gravity.