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An illustration of a human ear.

Human Ear

An illustration of a human ear.

A distribution of the fifth pair of nerves. Labels: 1, The orbit for the eye. 2, The upper jaw. 3, The tongue. 4, The lower jaw. 5, The fifth pair of nerves (trigemini). 6, The first branch of this nerves that passes to the eye. 9, 10, 11, 12, 13, 14, Division of this branch. 8, The third branch that is distributed to the tongue and teeth of the lower jaw. 23, The division of this branch (gustatory). 24, The division that is distributed to the teeth of the lower jaw.

The Fifth Pair of Nerves

A distribution of the fifth pair of nerves. Labels: 1, The orbit for the eye. 2, The upper jaw. 3, The…

A representation of the brain, spinal cord and spinal nerve. Labels: 1, The cerebrum. 2. The cerebellum. 3, Spinal cord. 4, The sciatic nerve. A. Distribution of the olfactory nerve. Labels: 1, 2, Nerve of smell. B. Optic Nerve. Labels: 15, Nerve of vision. C. The gustatory nerve. Labels: 1, 2, 3, 4, Branches of the nerve of taste. D. Auditory nerve. Labels: 13, Nerve of hearing.

Nervous System

A representation of the brain, spinal cord and spinal nerve. Labels: 1, The cerebrum. 2. The cerebellum.…

"Diagram of the simple reflex arc. R, receptor; A, afferent (sensory) neuron; E, efferent (motor) meuron; M, muscle." —Martin, 1917

Reflex Arc

"Diagram of the simple reflex arc. R, receptor; A, afferent (sensory) neuron; E, efferent (motor) meuron;…

"Diagram to illustrate how a single sensory neuron may communicate with several motor neurons, and a single motor neuron with several sensory neurons." —Martin, 1917

Sensory Neuron

"Diagram to illustrate how a single sensory neuron may communicate with several motor neurons, and a…