Intermediate in structure and position between a capillary and a vein (and thus why it is sometimes referred to as a capillary vein or a veinlet), it is a small, highly permeable, blood vessel that allows blood to return from the capillary beds (or plexuses) to the veins . See Selectins
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Ventricular zone
The part of the embryonic brain where neurones are generated.
Ventrolateral thalamus
Nucleus in the front of the lower part of the thalamus receiving inputs from the deep cerebellar nuclei and projecting to the motor and premotor cortices, as well as the supplementary motor area . See Cerebellum (anatomy), Deep cerebellar nuclei, Motor cortex, Premotor cortex, Supplementary motor area (SMA), Thalamus
Ventricle
One of the interconnected cavities in the vertebrate brain that is filled with cerebrospinal fluid that circulates through the cavities. There is a pair in the cerebral cortex (lateral ventricles), one in the rest of the forebrain, and another in the medulla. See Cerebral spinal fluid (CSF), Dandy Walker malformation, Limbic system, Locus coeruleus (or …
Ventral visual pathway (or stream)
A cortical visual processing pathway that runs from the occipital lobe in the primary visual cortex to ventral part of the inferotemporal lobes. Its proposed functions are to consciously processes information about the form (lines, curves, angles), colour, surface texture etc. (i.e., intrinsic properties) of whole objects, and off-line planning to guide action. As such, …
Ventral plate in limb bud
A plate-like concentration of (ventrally located) mesenchymal cells in the extremities, giving rise to extensor and antigravity muscles. See Dorsal plate in limb bud, Embryo, Limb bud, Mesenchyme, Ventral
Ventral roots
They are home to the axons of alpha motoneurons, which innervate extrafusal muscle fibbers. They are myelinated, with diameters of 12 to 30Œº,and located in the spinal tray. The cell bodies of these efferent or motor axons also project to smooth and cardiac muscles located in the lateral horns of the spinal cord at T1-L2 …
Ventral horn
As known as the anterior or motor root, it is the column at the ventral side of the spinal cord (i.e., situated toward the same side of the body as the stomach), and that carries descending efferent information via the corticospinal tracts to striated muscles or smooth and cardiac muscles as well as glands. See …
Ventral
From the Latin word for ‘appertaining to the belly’, it means situated to the same part of the body as the belly (i.e., the frontal part of the body in bipeds and the underside of the body in quadrupeds). In the human forebrain, however, it is used to mean inferior or bottom. Like caudal, dorsal …
Velum
The soft palate and adjacent nasopharynx that closes during normal swallowing and during the production of certain speech sounds. See Larynx, Pharynx