Photomicrograph of nucleus and nucleolus

Photomicrograph of a thin section of gabbro.

Photomicrograph of thin section of latite ( in plane polarised light )

Photomicrograph of thin section of latite ( in cross polarised light )

Photomicrograph of thin section of phyllite ( in cross polarised light )

Photomicrograph of a thin section of eclogite from Turkey.

Photomicrograph made with a Scanning Electron Microscope ( SEM ) and Back-Scatter Detector: Cross section of fly ash particles at 750x magnification

Photomicrograph of thin section of granodiorite from Slovakia ( in crossed polarised light )

Photomicrograph of thin section of monzonite ( in cross polarised light )

Photomicrograph of thin section of monzonite ( in plane polarised light )

Photomicrograph of a volcanic lithic fragment ( sand grain ); upper picture is plane-polarized light, bottom picture is cross-polarized light, scale box at left-center is 0. 25 millimeter.

Photomicrograph of a volcanic sand grain ; upper picture is plane-polarized light, bottom picture is cross-polarized light, scale box at left-center is 0. 25 millimeter.

Photomicrograph of a volcanic sand grain ; upper picture is plane-polarized light, bottom picture is cross-polarized light, scale box at left-center is 0. 25 millimeter.

Photomicrograph of a volcanic ( basaltic ) sand grain ; upper picture is plane-polarized light, bottom picture is cross-polarized light, scale box at left-center is 0. 25 millimeter.

Photomicrograph of a volcanic lithic fragment ( sand grain ); upper picture is plane-polarized light, bottom picture is cross-polarized light, scale box at left-center is 0. 25 millimeter.

File: LvMS-Lvm. jpg | Photomicrograph of a volcanic lithic fragment ( sand grain ) derived from scoria ; upper picture is plane-polarized light, bottom picture is cross-polarized light, scale box at left-center is 0. 25 millimeter.

Photomicrograph of a volcanic sand grain ; upper picture is plane-polarized light, bottom picture is cross-polarized light, scale box at left-center is 0. 25 millimeter.

Photomicrograph showing nodules of tumor cells separated by hyalinised fibrous septae ( 50 ×, HE stain ).

Photomicrograph of rhyolite showing spherulitic texture ( brown, between grey to white crystals ).

Photomicrograph of a feldspathic wacke ( sandstone ).

Photomicrograph of a lithic wacke ( sandstone ).

These are the substantia nigra ( from the Latin black substance )-Pars Compacta part, the locus coeruleus ( blue spot ), the dorsal motor nucleus of the vagus nerve ( cranial nerve X ), and the median raphe nucleus of the pons.

Preganglionic parasympathetic neurons are in the medulla oblongata ( forming visceral motor nuclei: the dorsal motor nucleus of the vagus nerve ( dmnX ), the nucleus ambiguus, and salivatory nuclei ) and in the sacral spinal cord.

Since the ventral and dorsal spinal cord have separate blood supply with very limited collateral flow, an anterior cord syndrome ( paralysis or paresis with some preserved sensory function ) is a possible surgical sequela, so it is important to have monitoring specific to the motor tracts as well as dorsal column monitoring.

The radial nerve and its branches provide motor innervation to the dorsal arm muscles ( the triceps brachii and the anconeus ) and the extrinsic extensors of the wrists and hands ; it also provides cutaneous sensory innervation to most of the back of the hand.

The dorsal roots carry afferent sensory axons, while the ventral roots carry efferent motor axons.

The dorsal ramus contains nerves that serve the dorsal portions of the trunk carrying visceral motor, somatic motor, and somatic sensory information to and from the skin and

V3 interneuron, motor neurons ( MN ), V2, V1, V0 interneurons ( in ventral to dorsal order ).

His research concluded that sensory nerves enter at the posterior ( dorsal ) roots of the spinal cord and motor nerves emerge from the anterior ( ventral ) roots of the spinal cord.

The dorsal part of the ACC is connected with the prefrontal cortex and parietal cortex as well as the motor system and the frontal eye fields making it a central station for processing top-down and bottom-up stimuli and assigning appropriate control to other areas in the brain.

It projects to the dorsomedial nucleus of the dorsal thalamus, which, in turn, projects to the prefrontal cortex ; it also projects to the pedunculopontine nucleus and tegmental motor areas.

Its function is to serve as a limbic-somatic motor interface, and it is involved in the planning and inhibition of movements from the dorsal striatopallidal complex.

* The dorsal motor nucleus of Vagus nerve.

This usually picks out either the motor neurones ( known as motor neurone disease ) or the sensory neurones ( known as sensory neuronopathy or dorsal root ganglionopathy ).

That is, through integrated and antagonistic system with sympathetic outflow from the vasomotor center of the brainstem, the parasympathetic outflow arising from the nucleus ambiguus and dorsal motor nucleus of the vagus nerve acts to decrease cardiac activity in response to fast increases in blood pressure.

When the dorsal roots are cut in a cat performing a step cycle, the dorsal spinocerebellar tract has no activity with the loss of peripheral excitation, whereas the ventral spinocerebellar tract continues to show activity, implying that the dorsal spinocerebellar tract carries sensory information to the spinocerebellum through the infererior cerebellar peduncle during movement and the ventral spinocerebellar tract carries internally generated motor information about the movement through the superior cerebellar peduncle.

The Squilla mechanism seems be similar to this ancestral state because a large diameter axon in the dorsal nerve chord facilitates limb promoter motor neurons.

The central analgesia system is mediated by 3 major components: the periaquaductal grey matter, the nucleus raphe magnus and the nociception inhibitory neurons within the dorsal horns of the spinal cord, which act to inhibit nociception-transmitting neurons also located in the spinal dorsal horn.

The putamen and caudate nucleus together form the dorsal striatum.

Along with the caudate nucleus it forms the dorsal striatum.

The other parts of the basal ganglia include the dorsal striatum, substantia nigra, nucleus accumbens, and the subthalamic nucleus.

In the literature, dorsal and ventral striatum have been virtually equalized with the distinction between the caudate-putamen complex ( dorsal ) and the nucleus accumbens ( ventral ), respectively.

However, the observable anatomical subdivisions of the dorsal striatum ( caudate nucleus and putamen ) essentially induced by the internal capsule do not completely overlap with now accepted anatomo-functional subdivisions.

This has led to the suggestion that one cause of tinnitus might be a homeostatic response of central dorsal cochlear nucleus auditory neurons that makes them hyperactive in compensation to auditory input loss.

Hypofunction of serotonergic neurones arising from the dorsal raphe nucleus and GABAergic neurones that are widely distributed in the brain may result in a lack of inhibitory effect on the putative GAD pathway.

The vagus nerve, named from the Latin word vagus means literally " Wandering ", since the nerve controls such a broad range of target tissues, has PSN that originate in the dorsal nucleus of the vagus nerve and the nucleus ambiguus in the CNS.

** The dorsal nucleus of vagus nerve and the inferior salivatory nucleus, both of which form the general visceral efferent fibers.

Axons from the facial nerve loop around the abducens nucleus, creating a slight bulge ( the facial colliculus ) that is visible on the dorsal surface of the floor of the fourth ventricle.

The central anatomy of the sixth nerve predicts ( correctly ) that infarcts affecting the dorsal pons at the level of the abducens nucleus can also affect the facial nerve, producing an ipsilateral facial palsy together with a lateral rectus palsy.

* Medial dorsal nucleus, a large nucleus in the thalamus

Neurons synapse here and, when stimulated, cause activation of neurons in the nucleus raphe magnus, which then project down into the dorsal horn of the spinal cord and prevent pain sensation transmission.

C = cervical segment, S = sacral segment, VPL = ventral posterolateral nucleus, SI = primary somatosensory cortex, VM = ventromedial prefrontal cortex, MD = medial dorsal thalamic nucleus, IL = intralaminar nucleus, VPM = ventral posteromedial nucleus, Main V = main trigeminal nucleus, Spinal V = spinal trigeminal nucleus