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Anatomy and Distribution of Sensory Nerves

This page is incomplete. It displays memoes and/or notes.

Title Memo

Location of nerve endings and what they’re sensitive to. They can only report what they are able to sense. Ex. of nerve ending placement in fasciae. Innervation of skin, glabrous vs non-glabrous, vs in muscles, joints, etc.

Note Text: 1138 About axons

An adult human has tens of thousands of these [axons] to supply the foot alone, and the tubular axons run all the way from the spinal cord to the foot--a distance of about one metre--without interrupton....The axons, therefore, in their entire distance from spinal cord to periphery, run in their own personal tubular cha....

Melzack, R. and Wall, P. D., "The Challenge of Pain (Reprint of 1988 edition)", Penguin Books, 2008, 85-6

Note Text: 704 Neural signal intensity

One of the characteristics of each signal that always must be conveyed is signal intensity--for instance, the intensity of pain. The different gradations of intensity can be transmitted either by using increasing numbers of parallel fibers or by sending more action potentials along a single fiber. These two mechanisms....

Guyton, A. C. and Hall, J. E., "Textbook of Medical Physiology, Eleventh Edition", Elsevier Saunders, 2006, 577-8

Note Text: 533 C-fiber coupling

Activation of one fiber by action potential activity in another is referred to as coupling. Coupling of action potential activity occurs between C fibers in the normal peripheral nerve of the monkey.

McMahon, S. B., Koltzenberg, M., Tracy, I., and Turk, D. C., "Wall and Melzack's Textbook of Pain", Elsevier Saunders, 2013, 6-7

Note Text: 697 Field of excitation of dendrites

The dendrites of the anterior motor neurons often extend 500 to 1000 micrometers in all directions from the neuronal soma. and these dendrites can receive signals from a large spatial area around the motor neuron. This provides a vast opportunity for summation of signals from many separate presynaptic nerve fibers.

Guyton, A. C. and Hall, J. E., "Textbook of Medical Physiology, Eleventh Edition", Elsevier Saunders, 2006, 568