(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.
Uncinus
Definition:
(n.) One of the peculiar minute chitinous hooks found in large numbers in the tori of tubicolous annelids belonging to the Uncinata.