Tunica media. Middle layer of a blood vessel wall.
Valve. Valva. Large flap.
Lymphatic valve. Valvula lymphatica. Valve in lymphatic vessels.
Valve of veins. Valvula venosa.
Anastomotic vessel. Vas anastomoticum.
Capillary. Vas capillare.
Collateral vessel. Vas collaterale. Vessel forming a shunt.
Lymphatic vessel. Vas lymphaticum. Sinusoid. Vas sinusoideum. Special, thin-walled vascular segment with a large lumen. Vasa vasorum. Blood vessels supplying the walls of blood vessels. Vein. Vena.
Accompanying vein. Vena comitans. Cutaneous vein. Vena cutanea. Emissary vein. Vena emissaria. Vein passing through a foramen of the skull to the outside. Deep vein. Vena profunda. Vein situated below the fascia.
Superficial vein. Vena superficialis. Cutaneous vein lying on the fascia of the limbs. Venule. Venula. Small vein directly following a capillary.
central nervous system. Systema nervo-sum centrale. It comprises the brain and spinal cord.
Gray matter (nuclei and columns). Substantia grisea [nuclei et columnae]. It consists of an accumulation of nerve cell bodies and is gray because only a sparse amount of medullary sheath material (myelin) is present in it. White matter. Substantia alba [tractus et fasciculi]. It is present in the tracts and conduction bundles.
Reticular formation. Formatio (substantia) re-ticularis.Scarcelydefinable mixture ofcells and fibers that influence movements, circulation and respiration as well as the sleeping-waking rhythm.
Substantia gelatinosa. Glia-rich, weakly pig-mented zone near the apex of the posterior horn of the spinal cord. It serves afferent tracts. Ependyma. Cellular lining of the cavities of the central nervous system.
1 |peripheral nervous system. Pars peripherica (system nervosum periphericum). It begins at the surface of the brain and spinal cord.
2 Nerve. Nervus.
3 Endoneurium. Delicate connective tissue sheath attaching directly to the basal membrane of an individual nerve fiber.
4 Perineurium. Connective tissue sheath enclosing the bundles of fibers of a peripheral nerve. It consists of lamellae made of epithelioid connective tissue cells.
5 Epineurium. The connective tissue sheath covering a peripheral nerve.
6 Afferent nerve fibers. Neurofibrae afferentes. Nerve fibers traveling into the central nervous system.
7 Efferent nerve fibers. Neurofibrae efferentes. Nerve fibers that conduct impulses away from the central nervous system.
8 Somatic nerve fibers. Neurofibrae somaticae. They oppose the autonomic nerves, i. e., visceral nerves.
9 Autonomic (visceral) nerve fibers. Neurofi-brae autonomicae (viscerales). Fibers of the visceral nerves.
10 Ganglion. An accumulation of nerve cell bodies and thus a macroscopic thickening of a nerve.
11 Capsule of ganglion. Capsula ganglii (gan-glionica). It is composed of connective tissue.
12 Stroma ofganglion. Stroma ganglii (ganglion-icum). Internal connective tissue of a ganglion.
13 Craniospinal (sensory) ganglia. Ganglia craniospinalia (encephalospinalia sensoria). Collective term for the following two special cases.
14 Spinal ganglia (sensory). Ganglia spinalia (sensoria). Dorsal root ganglia.
15 Sensory ganglia of cranial nerves. Ganglia sensoria neuricum cranialium (gg. en-cephalica). Spinal ganglia equivalent of cranial
21 Cray ramus communicans. Ramus communicans griseus. Connection between the sympathetic trunk and spinal nerve. It contains postganglionic, nonmyelinated fibers and therefore appears gray.
22 Parasympathetic ganglion. Ganglion para-sympatheticum (parasympathicum). See pp. 338, 28-35.
23 Spinal nerves. Nervi spinales. They arise from the union of dorsal and ventral roots.
24 Plexus of spinal nerves. Plexus nervorum spi-nalium. It is present in the cervical, lumbar and sacral regions and gives rise to the nerves for the limbs.
16 Autonomic (visceral) ganglia. Ganglia autonomica (visceralia). Ganglia of visceral nerves.
17 Preganglionic nerve fibers. Neurofibrae praeganglionicae. Myelinated nerve fibers passing to the ganglia of the visceral nerves.
18 Postganglionic nerve fibers. Neurofibrae postganglionicae. Nonmyelinated nerve fibers passing from the visceral ganglia to the viscera.
19 Sympathetic ganglion. Ganglion sympathe-ticum (sympathicum). Represented mainly by the symphathetic trunk.
20 White ramus communicans. Ramus communi-cans alba. Connection between the spinal nerve and sympathetic trunk. It appears white on account of its myelinated preganglionic fibers.
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