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"Superficial arteries and nerves of the face and neck. 1, Temporal artery; 2, artery behind the ear; 3, occipital artery; 4, greater occipital nerve; 5, smaller occipital nerve; 6, nerve of the neck; 7, trapezius muscle; 8, clavicular nerves; 9, clavicle; 10, sterno-cleido-mastoid muscle; 11, outer artery of the head; 12, inner artery of the head; 13, salivary gland; 14, nerves of the lower jaw; 15, outer maxillary artery; 16, nerve of the chin; 17, circular muscle of the mouth; 18, greater yoke muscle; 19, nerves below the eye; 20, masseter, or chewing muscle; 21, ear passage; 22, arteries of the forehead; 23; nerves of the forehead; 24, eye-closing muscle; 25, facial artery; 26, facial nerve." -Foster, 1921

Arteries and Nerves

"Superficial arteries and nerves of the face and neck. 1, Temporal artery; 2, artery behind the ear;…

Anterior view of the brain and spinal marrow. Labels: 1, 1, hemispheres of the cerebrum; 2, great middle fissure; 3, cerebellum; 4, olfactory nerves; 5, optic nerves; 6, corpora albicantia; 7, motor oculi nerves; 8, pons Varolii; 9, fourth pair of nerves; 10, lower portion of the medulla oblongata; 11, 11, medulla spinalis in its whole length; 12, 1, spinal nerves; 13, cauda equina.

Brain and Spinal Cord

Anterior view of the brain and spinal marrow. Labels: 1, 1, hemispheres of the cerebrum; 2, great middle…

The brain and spinal cord. Labels: 1, 1, hemispheres of cerebrum; 2, great middle fissure; 3, cerebellum; 4, olfactory nerves; 5, optic nerves; 6, corpora albicanlia; 7, motor oculi; 8, pons Varolii; 9, fourth nerve; 10, medulla oblongata; 11, 11, medulla spinalis; 12, 12, spinal nerves; 18, cauda equina.

Brain and Spinal Cord

The brain and spinal cord. Labels: 1, 1, hemispheres of cerebrum; 2, great middle fissure; 3, cerebellum;…

The cervical and brachial nerve plexuses of the left side of the body.

Cervical and Brachial Nerve Plexuses

The cervical and brachial nerve plexuses of the left side of the body.

The plan of the cervical and brachial plexuses (nerves), somewhat simplified.

Cervical and Brachial Plexuses (Nerves)

The plan of the cervical and brachial plexuses (nerves), somewhat simplified.

The distribution of nerves on the side of the face.

Facial Nerves

The distribution of nerves on the side of the face.

"Distribution of nerves on the side of the face." — Richardson, 1906

Facial Nerves

"Distribution of nerves on the side of the face." — Richardson, 1906

The nerves of the finger.

Finger

The nerves of the finger.

View of the nerves on the back part of the forearm and hand.

Nerves of the Forearm and Hand

View of the nerves on the back part of the forearm and hand.

Deep dissection of front of the forearm. Labels: 1, supinator longus; 2, ulnar nerve; 3, brachialis; 4, biceps; 5, musculo-spiral; 6, median; 7, posterior interosseous; 8, pronator teres; 9, extensor carpi radialis longior; 10, brachial artery; 11, supinator brevis; 12, flexor sublimus digitorum; 13, radial nerve; 14, flexor carpi ulnaris; 15, extensor carpi radialis brevior; 16, ulnar artery; 17, origin flexor sublimus digitorum; 18, flexor profundus digitorum; 19, tendon pronator teres; 20, dorsal branch of ulnar nerve; 27, tendon of supinator longus; 28, one of the lumbricales muscle; 29, pronator quadratus; 31, tendon flexor carp iradialis; 33, digital branches median nerve; 35, abductor pollicis.

Dissection of Forearm

Deep dissection of front of the forearm. Labels: 1, supinator longus; 2, ulnar nerve; 3, brachialis;…

Deep dissection of the front of the forearm. Labels: 1, supinator longus; 2, ulnar nerve; 3, brachialis anticus; 4, biceps; 5, musculo-spiral; 6, median nerve; 7, posterior interosseous nerve; 8, pronator teres and flexor carpi radialis; 9, extensor carpi radialis longior; 10, brachial artery; 11, supinator brevis; 12, flexor sublimus digitorum; 13, 13, radial nerve; 14, flexor carpi ulnaris; 15, extensor carpi radialis brevior; 16, ulnar artery; 17, radial origin of flexor sublimus digitorum; 18, flexor profundus digitorum; 19, pronator teres; 20, dorsal branch ulnar nerve; 21, radial artery; 2, deep branch ulnar nerve; 233, flexor longus pollicis; 24, abductor minimi digiti; 25, anterior interosseous nerve; 26, digital branches of ulnar nerve; 27, supinator longus; 28, one of lumbricales; 29, pronator quadratus; 31, flexor carpi radialis; 33, digital branches median nerve; 35, abductor pollicis.

Dissection of the Forearm

Deep dissection of the front of the forearm. Labels: 1, supinator longus; 2, ulnar nerve; 3, brachialis…

A section across the forearm a short distance below the elbow-joint. R and U, its two supporting bones, the radius and ulna; e, the epidermis, and d, the dermis of the skin; the latter is continuous below with bands of connective tissue, s, which penetrate between and invest the muscles, which are indicated by numbers; n, n, nerves and vessels.

Forearm, Section of

A section across the forearm a short distance below the elbow-joint. R and U, its two supporting bones,…

"Nerves of the had. 1, Nerves of the skin; 2, tendons; 3, arteries of the palm of the hand; 4, elbow nerve; 5, elbow artery; 6, nerve of the forearm; 7, nerve of the under-arm; 8, artery of the under-arm." -Foster, 1921

Hand Nerves

"Nerves of the had. 1, Nerves of the skin; 2, tendons; 3, arteries of the palm of the hand; 4, elbow…

The plan of the lumbosacral plexus (nerves).

Lumbosacral Plexus (Nerves)

The plan of the lumbosacral plexus (nerves).

Striped, or striated, muscle which quickly contracts causing the alternating black and white lines. It has very delicate fibers (M FL). It is stimulated by nerve fibers (N F), which divide into an endplate (N E) on the contracting surface. N are nuclei, which are a part of elongated cells that fused together to make the muscle. M stands for muscle and N, except for nuclei, stands for nerve.

Striated Muscle

Striped, or striated, muscle which quickly contracts causing the alternating black and white lines.…

Forms of nerve cells. They each have a nucleus and nucleolus and are connected to each other by means of numerous branches and are found in the brain, spinal cords, and other nerves.

Nerve Cells

Forms of nerve cells. They each have a nucleus and nucleolus and are connected to each other by means…

This illustration shows nerve cells from spinal ganglia.

Nerve Cells from Spinal Ganglia

This illustration shows nerve cells from spinal ganglia.

Nerve fibers. Labels: a, nerve-fiber, showing complete interruption of the white substance; b, another nerve fiber with nucleus. In both these nerve fibers the white substance is stained black with osmic acid, and the axon is seen running as an uninterrupted strand through the center of the fiber. c, ordinary nerve fiber unstained; d, e, smaller nerve fiber; f, varicose nerve fiber; g, non-medullated nerve fibers.

Nerve Fibers

Nerve fibers. Labels: a, nerve-fiber, showing complete interruption of the white substance; b, another…

To illustrate the structure of nerve fibers. Labels: A, nerve fiber examined fresh; n, node. B, nerve fiber with axis cylinder shaded, and medulla represented by dark lines; n.c, nucleus; p, granular cell substance near the nucleus. C, more highly magnified: m, medulla; n, node. D, nerve treated with reagents to show the axis cylinder: n.x, surrounded by medulla, m. E, nerve treated with reagents to show n.c, nucleus with fine line over it representing the neurilemma, and outside this fine connective tissue, c: n.c', nucleus lying in the fine connective tissue. F, nerve fiber deprived of its neurilemma showing medulla broken up into fragments, m, surrounding the axis cylinder, n.x.

Nerve Fibers

To illustrate the structure of nerve fibers. Labels: A, nerve fiber examined fresh; n, node. B, nerve…

Nervous system of a honeybee

Nerve System

Nervous system of a honeybee

Nervous system of a honeybee larva

Nerve System of Larva

Nervous system of a honeybee larva

A diagram of nerve tubules A nerve tube consists of a white portion which is fatty, and which protects the central portion, or axis cylinder. Surrounding these is a tubular membrane composed of epithelial cells. The nerve of the body are made up of bundles of these tubes, bound together by connective tissue and enclosed in a sheath of the same. Labels: a, axis cylinder; b, inner border of white substance; c, c, outer border of same; d, ,d, tubular membrane; B, tubular fibers; e, in natural state; f, under pressure; g, g', varicose fibers.

Nerve Tubules

A diagram of nerve tubules A nerve tube consists of a white portion which is fatty, and which protects…

Forms of nerve-cells.

Nerve-Cells

Forms of nerve-cells.

The cord-like structures composed of delicate filaments by which sensation or stimulative impulses are transmitted to and from the brain and other organs.

Nerves

The cord-like structures composed of delicate filaments by which sensation or stimulative impulses are…

Nerves leading to the roots of the teeth.

Nerves Leading to Teeth Roots

Nerves leading to the roots of the teeth.

A view of the nerves of the back of the forearm and hand.

Nerves of the Forearm and Hand

A view of the nerves of the back of the forearm and hand.

Diagram to indicate the arrangement of the Sympathetic Nervous Centers and Fibers.

Nervous Centers

Diagram to indicate the arrangement of the Sympathetic Nervous Centers and Fibers.

Part of the nervous system viewed from in front.

Nervous System

Part of the nervous system viewed from in front.

Element of Nervous System. a: Sensory fiber; b: Motor fiber; c: Center; f: End of sensory fiber; m: muscle.

Nervous System

Element of Nervous System. a: Sensory fiber; b: Motor fiber; c: Center; f: End of sensory fiber; m:…

Diagram illustrating the general arrangement of the cerebrospinal nervous system.

Diagram of the Human Nervous System

Diagram illustrating the general arrangement of the cerebrospinal nervous system.

Diagram illustrating the general arrangement of the nervous system.

Diagram of the Nervous System

Diagram illustrating the general arrangement of the nervous system.

View of the nervous system of man, showing the nerve centers (brain and spinal cord) giving off nerves to supply the whole of the body.

The Nervous System

View of the nervous system of man, showing the nerve centers (brain and spinal cord) giving off nerves…

Diagram of the human nervous system showing the brain, spinal cord, and nerves.

Nervous System

Diagram of the human nervous system showing the brain, spinal cord, and nerves.

Diagram of nervous system. Labels: a, a, cortex of cerebral hemispheres; b, b, cell body and dendrites of upper motor neuron, situated in cerebral cortex; b', axon of upper motor neuron, branching at its termination near the dendrites of lower motor neuron, situated in the ventral horn of gray matter in the spinal cord; B', axon of lower motor neuron passing to its termination in a voluntary muscle fiber B"; C, cell body and dendrites of supper sensory neuron, situated in the medulla oblongata; C'C', axons of upper sensory neurons, terminating in cortex; c, cell body of lower sensory neuron situated in the dorsal root ganglion; c''', dendrite of lower motor neuron, conducting impulses from the periphery to the central nervous system; c", long axon of lower sensory neuron, conducting impulses toward the brain; c', short axon of lower sensory neuron, conducting impulses direct to ventral horn. (For the sake of simplicity the connection with the cerebellum are omitted.)

Nervous System Diagram

Diagram of nervous system. Labels: a, a, cortex of cerebral hemispheres; b, b, cell body and dendrites…

"Esophageal Ring. Anterior end of nervous system of Polynoë, a polychaetous annelid, showing, a, cerebral ganglia, connected by the esophageal ring, b, with the ventral series of ganglia, c." -Whitney, 1911

Scale Worm Nervous System

"Esophageal Ring. Anterior end of nervous system of Polynoë, a polychaetous annelid, showing, a,…

A thin slice through the skin. Labels: a, dead part; d, live part of the epidermis; ar, artery; e, sweat glands; n, nerves.

Section of the Skin

A thin slice through the skin. Labels: a, dead part; d, live part of the epidermis; ar, artery; e, sweat…

Portion of the spinal cord. 1: Body of cord; 2: A spinal nerve from left side of cord; 3: Anterior roots of a nerve; 4: Posterior roots.

Spinal Cord

Portion of the spinal cord. 1: Body of cord; 2: A spinal nerve from left side of cord; 3: Anterior roots…

General view of the sympathetic nervous. Labels: 1,2,3, cervical ganglia; 4, 1st thoracic ganglion; 5, 1st lumbar ganglion; 6, 7, sacral ganglion; 9, 9, cardiac nerves; 13, branch of pneumogastric nerve ending in semi-lunar ganglion; 14, epigastric plexus.

General View of the Sympathetic Nervous System

General view of the sympathetic nervous. Labels: 1,2,3, cervical ganglia; 4, 1st thoracic ganglion;…

The sympathetic system of nerves.

The Sympathetic System of Nerves

The sympathetic system of nerves.

Nerves of the thigh. Labels: 1, gangliated cord of sympathetic; 2, third lumbar nerve; 3, branches to iliacus internus; 4, fourth lumbar nerve; 5, anterior crural nerve; 6, lumbosacral nerve; 7, branch to psoas; 8, obturator nerve; 9, external cutaneous nerve (cut); 10, nerve to pectineus; 11, superficial division of obturator nerve; 13, 13, sartorius muscle; 14, 14, adductor longus; 15, branch to rectus; 16, deep division of obturator nerve; 17, branches to vastus externus and crureus; 18, adductor brevis; 19, branch to vastus internus; 20, adductor magnus; 21, vastus externus; 22, 22, internal saphenous nerve; 23, rectus femoris; 24, pattelar branch of saphenous nerve; 25, vastus internus; 26, gracilis.

Nerves of the Thigh

Nerves of the thigh. Labels: 1, gangliated cord of sympathetic; 2, third lumbar nerve; 3, branches to…