What's the difference between arteriola and arteriole?
Arteriola
Definition:
Example Sentences:
Arteriole
Definition:
(n.) A small artery.
Example Sentences:
(1) Electronmicroscopical investigations have revealed that, under normal conditions, a minor vesicular transfer of intravenously injected peroxidase occurs across the endothelium in segments of arterioles, capillaries and venules, especially in arterioles with a diameter about 15-30 mu.
(2) This study examined the immunohistochemical findings in renal arterioles from biopsy specimens, and related the findings to those of light and electron microscopy.
(3) Normally, the small longitudinal (arterioles to venules) gradient of microvascular and perimicrovascular pressures is not a major concern, but in nonuniform disease processes, such as microembolism, longitudinal inhomogeneity, and parallel inhomogeneity are dominant.
(4) Glial siphoning can distribute the potassium preferentially toward the blood vessels in the area, leading to an elevation in potassium concentration in the ECF surrounding the vascular smooth muscle of the arterioles.
(5) From these experiments it is concluded that vascular A1 and A2 adenosine receptors are present in the kidney and that activation of A1 receptors is associated with preglomerular vasoconstriction only, whereas activation of A2 receptors mediates pre- and postglomerular vasodilation with a lack of vasodilatory response of the distal afferent arteriole.
(6) Consistent with these observations, L-NMMA treatment significantly attenuated Ach-induced vasodilation in 4th-order arterioles, but it had no effect on 2nd-order arterioles.
(7) Neither the first- (A1) or second-order arterioles (A2) nor the first- (V1) or second-order venules (V2) constricted significantly to angiotensin II.
(8) The criteria selected by a classification tree method were similar: palpable purpura, age less than or equal to 20 years at disease onset, biopsy showing granulocytes around arterioles or venules, and gastrointestinal bleeding.
(9) In norepinephrine-contracted afferent arterioles, CGRP, but not SCT, produced a concentration-dependent relaxation [50% maximal dose, (EC50) = 1.3 nM].
(10) Simultaneously, reactivity of pial arteriole was observed and its diameter was measured through the cranial window using intravital microscope and width analyzer.
(11) Three mechanisms are held responsible for the resistance increase: (1) a rarefaction of the smallest arterioles and capillaries, (2) an increased wall to lumen ratio and (3) a decreased internal diameter.
(12) The anatomical arrangement of the pia mater suggests that it may act as a regulatory interface between cerebrospinal fluid and the surface of the brain and between arterioles within the brain and the surrounding neural tissue.
(13) Metabolism-mediated vasodilatation, with adenosine as principal mediator, essentially concerns the small-caliber intramyocardial arterioles and is the predominant regulatory system in normal subjects.
(14) The ciliary process vasculature consists of three different vascular territories with discrete arterioles and venules.
(15) These findings suggest that total acute denervation significantly increases the diameter of small arteries and arterioles, thereby decreasing the resistance in the arterial bed and increasing blood flow.
(16) SK-827 tended to dilate smaller arterioles more markedly than larger arterioles, and larger arterioles than small arteries.
(17) The coupling together of 10 nephrons per se impairs autoregulation of renal blood flow compared to that of a single nephron model, but this effect is more than outweighed by greater control resistance in deep arterioles.
(18) EABF was obtained by timed complete collection of blood from superficial efferent arterioles.
(19) However, large- (1A) and intermediate- (2A) sized arterioles dilated proportionately more in TR than in SED rats during 1- to 8-Hz muscle contractions, even though the passive mechanical properties (circumference-passive wall tension relationships) were similar between groups.
(20) At two days, the intrarenal vascular system distal to the afferent arteriole is strikingly different than that of the adult.