(n.) A more or less elongated process or organ, simple or branched, proceeding from the head or cephalic region of invertebrate animals, being either an organ of sense, prehension, or motion.
Example Sentences:
(1) Using serial-sectioning techniques for conventional transmission and high-voltage electron microscopy, we characterized the ultrastructural features and synaptic contacts of the sensory cell in tentacles of Hydra.
(2) Microtubules at the tip of a resting (non-feeding) tentacle are arranged helically in two concentric tube-shaped arrays.
(3) The sensory cells of the mantle tentacles are found to be ciliated, primary receptors with subepithelial nuclei.
(4) In studies involving nearly intact animal preparations, neurons were identified which control specific movements of the dorsal cerata, the oral veil tentacles, and the margins of the foot.
(5) Freed of the need to wave their tentacles around to hunt for food, the coral can devote more energy to secreting the mineral calcium carbonate, from which they form a stony exoskeleton.
(6) She said the tentacles, or oral arms, were about a metre long and covered in microscopic mouths.
(7) Each tentacle is reinforced by eight pairs of fibrils arranged concentrically just within its wall, and contains a single missile-like body (MLB).
(8) We decided to test Chrysaora hysoscella dermotoxicity on healthy volunteers by cutting a Chrysaora hysoscella tentacle and placing it on a gauze soaked in a solution of 3% NaCl and applying then to the volar side of the right wrist for one minute.
(9) The prime minister said waves of immigration had helped Australia flourish, “yet the tentacles of the death cult have extended even here as we discovered to our cost during the Martin Place siege last December”.
(10) The tentacles of the terrestrial snail Achatina fulica contain an epithelium at their tips which is specialized for olfaction.
(11) Contact with the tentacles of the jellyfish had produced characteristic whiplash-like weals on the skin.
(12) The tentacles in hydra have characteristics of both spacing patterns and number-regulating patterns in that their number under some circumstances changes with the size of the animal and under others does not.
(13) The chemoreceptors of the optic tentacle bulb, small and large neurons of tentacle ganglion and bipolar cells of olfactory nerve send their processes to the CNS of the mollusc.
(14) Through dexterous operation of the Shinkai6500's mechanical arms by pilot Sasaki-san, we quickly began collecting samples of rocks, the hot fluids from the vents, and the creatures thriving around them: speckled anemones with almost-translucent tentacles, and the orange-tinted shrimp scurrying among them.
(15) The role of micro-filaments and halothane-resistant dynein-like inter-row bridges in tentacle movement is discussed.
(16) Here lies our greatest risk, one insufficiently appreciated by those who so blithely accept the tentacles of corporation, press and state insinuating their way into the private sphere.
(17) Similarly, following decapitation as a new head regenerates, CP8 label appears covering a domed area at the apical end of the regenerate before tentacles evaginate delineating the head.
(18) Particularly, the proteinic fractions 7 and 8 are more concentrated in the extract of juveniles snails tentacles than in the extract of adults snails.
(19) Ninety-seven per cent of all nematocytes, including all 4 types, are mounted in the battery cells of the tentacles.
(20) The tentacles become attached to the cilia of the host, and serve for feeding upon the plasmatic contents of the cilia as well as for maintaining contact with the host.
Tentacular
Definition:
(a.) Of or pertaining to a tentacle or tentacles.
Example Sentences:
(1) Radioimmunoassays carried out on acidic extracts of the same organs confirm the molecular results and lead us to conclude to the presence of substances strongly related to MK in the ovotestis as well as in the circumoesophageal ganglia (COG), and to ascertain that the MK-positive tentacular collar cells do not contain authentic MK.
(2) Cobalt filling reveals that axons of the medial neurosecretory cells project to the tentacular ganglion, near the optic gland.
(3) Individual tentacular bulbs form the proximal terminus for a closed hydraulic system.
(4) The most distinctive feature was an array of tentacular processes (0.1-0.2 micron in diameter and ca.
(5) No positive signal can be detected neither in pedal and visceral ganglia nor in the tentacular collar cells, in spite of previous immunocytochemical data.
(6) The experimental procedure consisted of detecting the effects of a brief tetanus, applied to tentacular and tegumentary nerves, on the amplitude of monosynaptic and unitary post-synaptic potentials (p.s.p.s) recorded in the left giant cell and generated by stimulating the test interneurone every 10 sec.
(7) Broad front invasion was associated with papillary and superficial tumors while tentacular invasion was associated with solid tumors and a generally poorer prognosis.
(8) Furthermore, the possible functional significance of its close connection to the food-capturing tentacular apparatus is discussed.
(9) Neurons in the cerebropleural ganglia (CPG), photoreceptors in the eye, optic ganglion cells, and statocyst hair cells of the nudibranch mollusk Hermissenda crassicornis responded in specific ways, as recorded intracellularly, to stimulation of the chemosensory pathway originating at the tentacular chemoreceptors as well as to stimulation of the visual pathway originating at the photoreceptors.
(10) Dorsal lesions cause an underestimation of tentacular strike often associated with defects in maintaining ocular convergence.
(11) Since they can cause pedal and parapodial contractions they may mediate reflex contractions elicited by tentacular stimulation.
(12) The 5-HT system interconnecting the CNS and the tentacular sensory organs in pulmonates is a suitable model for studying the postulated developmental role of 5-HT neurons.
(13) Neoadjuvant intra-arterial chemotherapy followed by partial cystectomy should be the most applicable conservative therapy with high radicality for invasive bladder cancer, when: 1) the patient has localized invasive cancer showing good response (greater than or equal to PR) to neoadjuvant chemotherapy, 2) the tumor is stage T3a or less and without findings of tentacular invasion (INF gamma) by pre-operative biopsy, and 3) pre-operative multiple biopsy is performed as deeply as possible along the prearranged incision line.
(14) This immunocytochemical study of 5-HT neurons and fibers in the nervous system of C. aspersa corroborate previous findings and describe new 5-HT neurons and their connections, mainly between the central nervous system and the tentacular sensory organs.
(15) These include the presence, in Cyanea, of an obvious tentacular nerve tract and nerve nets associated with clusters of cnidocytes in the tentacles.
(16) Stimulation of the cerebral upper labial (UL) and anterior tentacular (AT) nerves produced excitatory postsynaptic potentials in L cells.
(17) Both UI-IR and UII-IR were also observed in a cuff-like arrangement of fibers surrounding the proximal portion of the supralabial nerve, as well as in a few fibers in the anterior tentacular nerves.
(18) Although no neurosecretory cell bodies occur in the tentacular ganglion, neurosecretory axons penetrate into the optic gland cells.
(19) In very advanced growth stages, however, they were also seen surrounding (and occasionally clogging) blood vessels, or in tentacular formations coming from a necrosis border and polarized towards the vessels.
(20) This rotation, however, is usually underestimated, tentacular ejection thus missing the prey.