What's the difference between helicin and helicon?
Helicin
Definition:
(n.) A glucoside obtained as a white crystalline substance by partial oxidation of salicin, from a willow (Salix Helix of Linnaeus.)
Example Sentences:
(1) Fluorescence histochemistry shows that helicine arteries are provided with an extremely dense network of adrenergic nerves located at the medio-adventitial border.
(2) The density of nerve fibres was particularly high around the subendothelial cushions of the helicine arteries.
(3) In the helicine artery and bulbus glandis, field stimulation evoked contractions and these contractions were abolished by guanethidine or TTX, indicating that these muscles are innervated by adrenergic excitatory nerve fibres.
(4) The epitheloid modified walls of helicine arteries are built of tightly arranged specialized smooth muscle cells (epitheloid cells).
(5) Endothelial cells in helicine arteries react on unspecific alkaline phosphatase, while the endothelium of deep arteries and of the cavernous spaces does not.
(6) Polsters protruding into the lumen of the distal helicine arteries regulate blood flow into the cavernous spaces.
(7) In our experience the injection of papaverine during the test has provided a better visualization of cavernous arteries and helicine branches.
(8) Among 34 plant phenolic compounds tested, arbutin, phenyl-beta-D-glucopyranoside, and salicin were shown to be strong inducers of syrB, giving rise to approximately 1,200 U of beta-galactosidase activity at 100 microM; esculin and helicin were moderate inducers, with about 250 to 400 U of beta-galactosidase activity at 100 microM.
(9) It is considered that, when the valve of the helicine artery opens, blood flows into the cavernous sinuses, expanding them, and as a result the outflowing vein is compressed between the sinuses and the albuginea, or the albuginea itself, acting like a valve and therefore assuming an important function in maintaining erection by disturbing the reflux of blood flow.
(10) The effect of the aromatic aldehydes benzaldehyde and salicylaldehyde, the glucose-acetal derivative 4,6-benzylidene-D-glucose (BG) and the glucoside salicylaldehyde-beta-D-glucoside (helicin) on cell inactivation induced by cis-dichlorodiammineplatinum (cis-DDP) was investigated using cultured human NHIK 3025 cells.
(11) While helicin retains the aldehyde moiety of salicylaldehyde, BG does not possess any free aldehyde group.
(12) The addition of histamine dihydrochloride to the perfusion solutions shows a slight vasodilator effect mainly on the subcapsular penicillar arterioles, including the helicine arterioles.
(13) Blood may also be redirected from anastomoses between the dorsal arteries and corpus spongiosum through other helicine arterioles supplying the sinusoids of the corpus cavernosum.
(14) The neural control of smooth muscle cells in the corpus spongiosum, helicine artery and bulbus glandis of the dog was investigated in relation to the mechanism involved in erection, using isometric tension recording and micro-electrode methods.
(15) It is suggested that the helicine arteries open during tumescence, thereby diverting blood from the shunt vessels into the dilating sinuses, and that the rising intracavernosal pressure eventually occludes the shunt vessels.
(16) The epithelioid cells constituting the media of the helicine branches of the deep artery vary in their fine structure from close resemblance to muscle cells, to cells with easily identified special features.
(17) The neural mechanism involved in erection is discussed in relation to the topical difference in the autonomic innervation patterns in the corpus spongiosum, helicine artery and bulbus glandis.
(18) The mesenchymal cells are also associated with the helicine arterial sprouts at this time period.
(19) Only the helicine arteries which drained into the cavernous sinuses displayed subendothelial cushions.
(20) Helicine arteries of the crura, but not the parent deep penile artery or arteries elsewhere, have muscular cushions in their walls.
Helicon
Definition:
(n.) A mountain in Boeotia, in Greece, supposed by the Greeks to be the residence of Apollo and the Muses.