sinusoid


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Related to sinusoid: sinusitis, sine wave

sinusoid

 [si´nŭ-soid]
1. resembling a sinus.
2. a form of terminal blood channel consisting of a large, irregular, anastomosing vessel, having a lining of reticuloendothelium but little or no adventitia. Sinusoids are found in the liver, adrenal glands, heart, parathyroid glands, carotid bodies, spleen, hemolymph glands, and pancreas.

si·nu·soid

(si'nŭ-soyd),
1. Resembling a sinus.
2. Sinusoidal capillary; a thin-walled terminal blood vessel having an irregular and larger caliber than an ordinary capillary; its endothelial cells have large gaps and the basal lamina is either discontinuous or absent.
[sinus + G. eidos, resemblance]

sinusoid

(sī′nə-soid′, -nyə-)
n.
1. Mathematics See sine curve.
2. Anatomy Any of the venous cavities through which blood passes in various glands and organs, such as the adrenal gland and the liver.

si′nu·soi′dal (-soid′l) adj.
si′nu·soi′dal·ly adv.

si·nu·soid

(sī'nŭ-soyd)
1. Resembling a sinus.
2. Sinusoidal capillary; a thin-walled terminal blood vessel having a more variable and larger caliber than an ordinary capillary; its endothelial cells have large gaps and the basal lamina is either discontinuous or absent.
[sinus + G. eidos, resemblance]
References in periodicals archive ?
The liver sinusoids (vas sinusoideum) ran radially and converged in the center of the lobule to form the central vein (venae centrales hepatis), this vessel has thin walls consisting of only endothelial cells supported by a sparse population of collagen fibers.
15 for the example of excitation signal fitted to sinusoid.
Using the examples of the change in time t of the pulsed current [i.sub.p](t) flowing through the specified wires (cables) according to aperiodic law or the damped sinusoid law, the possibilities of the proposed electrical engineering approach to the specific choice of the boundary permissible cross-sections [S.sub.Cil] for the considered types of uninsulated wires, insulated wires and cables widely used in the discharge circuits of HHIT are demonstrated.
The proposed method is tested over different inputs such as a heartbeat (Figure 6), mridangam (Figure 7), multiple sinusoids (Figure 8), radio (Figure 9), high-carrier (Figure 10), music (Figure 11), and a speech signal (Figure 12).
Typically, the observed lesions in the livers of diabetic animals in this study reached all structures of the organ, including both portal areas and sinusoids, and hepatocytes, nuclei, and intracytoplasmic organelles, including a progressive enlargement of sinusoids, micro- and macrovesicular fatty degeneration, steatohepatitis and periportal fibrosis.
The fact that every quadrupling in L results in an increase of 6.02 dB in the overall SNR was tested practically by developing two different versions of the FPGA firmware to implement the PSD operation on 1 and 4 cycles of the measured sinusoid. The final measurements showed an improvement of almost 5 dB in the achieved SNR when 200 samples from 4 cycles, instead of 1 cycle having 50 samples, were used.
eNOS expression is downregulated during liver reperfusion as a result of inhibition of eNOS activity by oxidative stress and absence of flow within the sinusoids during ischemia [14].
The velocities for each field were averaged as described for sinusoid diameter.
To access the bloodstream, liver-stage merozoites must leave hepatocytes and cross both the Disse and sinusoid spaces, where they are vulnerable to be attacked by phagocytes including KCs and DCs.
The inner microrelief was smoothened due to the paralytic expansion of arterioles and venules; however numerous micropinocytotic vesicles appeared on the surface of capillaries which belonged to the sinusoid type.