(n.) A little eye; a minute simple eye found in many invertebrates.
(n.) An eyelike spot of color, as those on the tail of the peacock.
Example Sentences:
(1) Each ocellus has a cuticular lens located on the distal end of a cuticular cone which encapsulates the receptor cells.
(2) It appears, therefore, that the graded receptor potential, which survives the application of tetrodotoxin, is responsible for mediating synaptic transmission in the ocellus.
(3) The receptory area of the ocellus terminates in a tapetum which contains granules, soluble in alcohol.
(4) A third type comes from the median ocellus and can be traced into the cervical connectives.
(5) This idea and alternatives have been tested on the barnacle lateral ocellus, a simple eye with only three photoreceptors, each with its own axon about 1 cm long.2.
(6) Membrane potential changes following illumination of a photoreceptor cell in the lateral ocellus of a barnacle (Balanus eburneus) were studied by means of intracellular recording and polarization techniques.
(7) The decay of the depolarizing and hyperpolarizing components of the visual signal was studied by recording intracellularly from single receptor axons of the median ocellus of the giant barnacle.2.
(8) Each ocellus has about 80 retinula cells whose axons project to corresponding ganglia from which 4 giant afferent interneurons (per ganglion) project to the brain.
(9) The visual pigment of each ocellus of mosquitoes reared in darkness was characterized by microspectrophotometry, and found to be the same.
(10) However, the two bilaterally positioned cells destined to become the pigment cells in the first step are still equipotent at this stage in that they can give rise to either the ocellus or otolith.
(11) Anatomically, the sensory cells of the dorsal ocellus of Tenodera were determined histologically to be grouped into two distinct regions, each group making its own separate contribution to the ocellar nerve.
(12) In the absence of this interaction, melanocyte specification proceeds along the dominant pathway that results in the differentiation of an ocellus.
(13) Five cells are accessory cells of the sensory structures: three lens cells and a pigment-cup cell in the ocellus, and a single pigment cell in the otolith.
(14) Of the remaining 79 cells, 36 are sensory, 17 receptors in the ocellus and 19 presumed hydrostatic pressure receptors; these lie on the right and left sides of the sensory vesicle, respectively.
(15) The light-evoked slow potential responses of the postsynaptic units are not altered by the application of tetrodotoxin to the ocellus.
(16) A small number of cells in the supraesophageal ganglion hyperpolarize when the median ocellus is illuminated and depolarize when it is shadowed.
(17) The spectral sensitivities of single Limulus median ocellus photoreceptors have been determined from records of receptor potentials obtained using intracellular microelectrodes.
(18) The spectral sensitivity curve for the repolarizing responses peaks at 480 nm; it is the only spectral sensitivity curve for a median ocellus electrical response known to peak at 480 nm.
(19) Our main conclusions are that: 1) the photoreceptors (retinular cells) of the lateral eye project only to the lamina; 2) the photoreceptors of the lateral rudimentary eye project to both the lamina and medulla; 3) the photoreceptors of the median ocellus project only to the ocellar ganglion; and 4) the photoreceptors of the rudimentary median (endoparietal) eye project to the ocellar ganglion and also into the optic tract.
(20) The view that the ocellus of the cockroach represents a degenerated structure can no longer be supported.
Spot
Definition:
(n.) A mark on a substance or body made by foreign matter; a blot; a place discolored.
(n.) A stain on character or reputation; something that soils purity; disgrace; reproach; fault; blemish.
(n.) A small part of a different color from the main part, or from the ground upon which it is; as, the spots of a leopard; the spots on a playing card.
(n.) A small extent of space; a place; any particular place.
(n.) A variety of the common domestic pigeon, so called from a spot on its head just above its beak.
(n.) A sciaenoid food fish (Liostomus xanthurus) of the Atlantic coast of the United States. It has a black spot behind the shoulders and fifteen oblique dark bars on the sides. Called also goody, Lafayette, masooka, and old wife.
(n.) The southern redfish, or red horse, which has a spot on each side at the base of the tail. See Redfish.
(n.) Commodities, as merchandise and cotton, sold for immediate delivery.
(v. t.) To make visible marks upon with some foreign matter; to discolor in or with spots; to stain; to cover with spots or figures; as, to spot a garnment; to spot paper.
(v. t.) To mark or note so as to insure recognition; to recognize; to detect; as, to spot a criminal.
(v. t.) To stain; to blemish; to taint; to disgrace; to tarnish, as reputation; to asperse.
(v. i.) To become stained with spots.
Example Sentences:
(1) O'Connell first spotted 14-year-old David Rudisha in 2004, running the 200m sprint at a provincial schools race.
(2) These lanes encourage cyclists to 'ride in the gutter' which in itself is a very dangerous riding position – especially on busy congested roads as it places the cyclist right in a motorist's blind spot.
(3) The effect of the mutation for white belly spot controlled by the dominant gene W on spermatogenesis in mice was examined by experimental cryptorchidism and its surgical reversal.
(4) Moments later, explosive charges blasted free two tungsten blocks, to shift the balance of the probe so it could fly itself to a prearranged landing spot .
(5) Our findings: (1) both forms, LC1 and LC3, migrate in the two species with rather similar electrophoretic constants (both in terms of pI and Mr); (2) the LC2 forms of rabbit and humans exhibit the same Mr but quite different pI values, the rabbit forms being more acidic; (3) the chain LC2Sb is resolved into two spots in both rabbit and humans.
(6) You just have to be the first person to spot a coach.
(7) The overall effect achieved with LTS was less than that with LTP, but it is possible to reduce IOP by selecting more reasonable parameters, e.g., a laser setting of 200mW, a 50 microns spot size and a 0.5 to 1-sec duration.
(8) The average repetitive yields and initial coupling of proteins spotted or blotted into PVDF membranes ranged between 84-98% and 30-108% respectively, and were comparable with the yields measured for proteins spotted onto Polybrene-coated glass fiber discs.
(9) In north-west Copenhagen, among the quiet, graffiti-tagged streets of red-brick blocks and low-rise social housing bordering the multi-ethnic Nørrebro district, police continued to cordon off roads and search a flat near the spot where officers killed a man believed to be behind Denmark’s bloodiest attacks in over a decade.
(10) Detection limits were then calculated for the different sizes of cold spots.
(11) These complications were believed to be caused by the use of a small spot size with high energy.
(12) In the brownish skin and in the black spots of the dorsal region all types of chromatophores are found.
(13) I can always spot something for my sisters Gretchen and Amy.
(14) Debeaking had no effect on the incidence of blood-spotting in the eggs.
(15) Six abnormal colonoscopic appearances were documented, namely mucosal edema, ulcers, friability, punctate spots, erythematous areas and luminal exudate.
(16) The town's Castle Hill is the perfect climb for travellers with energy to burn off: at the top is a picnic spot with far-reaching views, and there is a small children's play area at its foot.
(17) This appears to be a newly described entity, although it resembles a Becker's nevus without hypertrichosis or an typical café au lait spot.
(18) A £100,000 bronze statue of an ordinary family, the Joneses, will be unveiled in a prime spot outside the city’s library which opened last year.
(19) When delta phi was enlarged, first saccades were either directed near the green or the red spot (bistable response mode).
(20) Join us for a spot of future gazing as we discuss: The challenges and opportunities colleges and training providers will face over the next five years International expansion The role of FE in higher education New ways to diversify New technology – the possibilities and risks.