What's the difference between carapace and crust?

Carapace


Definition:

  • (n.) The thick shell or shield which covers the back of the tortoise, or turtle, the crab, and other crustaceous animals.

Example Sentences:

  • (1) The pigment granules within the erythrophores are dispersed out into the dendritic processes of the cells when the isolated carapace is placed in physiological solution.
  • (2) Eye withdrawal in the green crab, Carcinus maenas was conditioned by pairing a mild vibration to the carapace as a conditioned stimulus (CS) with a puff of air to one of the eyes as an unconditioned stimulus (US).
  • (3) In both species, the carapace is heavily pigmented and during the development and translocation of basal cells from the germinal layer of the epidermis, pigment granules migrate towards the surface layers.
  • (4) A prawn of 15 mm carapace length could not eliminate all snails.
  • (5) She said: "Under the carapace of glittering, hedonistic celebrity, the ooze of a very different and more dangerous lifestyle has seeped out for all to see."
  • (6) Population experiments demonstrated that a prawn of 25 mm carapace length could eliminate 95% of a population of 80 snails in a 20-1 aquarium within 20 days and all snails by day 40.
  • (7) Moir also called for "the truth" to emerge "about the exact circumstances of his strange and lonely death" and said: "Once again, under the carapace of glittering, hedonistic celebrity, the ooze of a very different and more dangerous lifestyle has seeped out for all to see".
  • (8) Crustacean remains in one gut content sample included carapace fragments bearing distinctive surface features found on the smaller toxic xanthids, Actaeodes tomentosus and Pilodius areolatus.
  • (9) Based on the low numbers of osteoblasts and osteoclasts in dermal bone of both populations of adult desert tortoises, it appears that the peripheral carapace is relatively inert with very low levels of dermal bone turnover.
  • (10) With the formation of the compound eye and the appearance of the carapace and other body-like structures, marking morphogenesis to the zoeal stage, embryos showed the beginning of a continuous and dramatic increase in ecdysteroid concentrations sustained until larval hatchout.
  • (11) Except for mild osteomalacia, carapaces of adult desert tortoises from the grazed habitat were relatively normal.
  • (12) For some substances (cadmium, bichromate, metavanadate, and bromide) individual growth (carapace length) was found to be a sensitive parameter.
  • (13) Mann called the series What Remains, her point being that death is not an end, that nature goes on doing its work long after the body has become a carapace.
  • (14) The three muscles on each side of the head share a common origin on the carapace and insert dorsally, laterally and ventrally on the eye.
  • (15) To circumvent this drawback in the application of morphometrics to describe 2 dimensional shapes, an alternative procedure based on Fourier analysis was developed and applied to the turtle carapace.
  • (16) Yet what the episode really shows is how much pressure MPs are under without the protective carapace of unity.
  • (17) Prawns greater than 22 mm carapace length could consume snails of any size.
  • (18) The electroretinogram (ERG) waveform of Petrolisthes elongatus is biphasic and transient and does not change with age (monitored as carapace length and weight of the individual).
  • (19) Based on these results, we propose that dermal bone of the peripheral carapace is a poor sample site for evaluating the effects of dietary or environmental conditions on calcified tissues in desert tortoises.
  • (20) He inherited a semi-proportional assembly electoral system that masks a core of partisan pro-Labour self-interest under a carapace of pluralism.

Crust


Definition:

  • (n.) The hard external coat or covering of anything; the hard exterior surface or outer shell; an incrustation; as, a crust of snow.
  • (n.) The hard exterior or surface of bread, in distinction from the soft part or crumb; or a piece of bread grown dry or hard.
  • (n.) The cover or case of a pie, in distinction from the soft contents.
  • (n.) The dough, or mass of doughy paste, cooked with a potpie; -- also called dumpling.
  • (n.) The exterior portion of the earth, formerly universally supposed to inclose a molten interior.
  • (n.) The shell of crabs, lobsters, etc.
  • (n.) A hard mass, made up of dried secretions blood, or pus, occurring upon the surface of the body.
  • (n.) An incrustation on the interior of wine bottles, the result of the ripening of the wine; a deposit of tartar, etc. See Beeswing.
  • (n.) To cover with a crust; to cover or line with an incrustation; to incrust.
  • (v. i.) To gather or contract into a hard crust; to become incrusted.

Example Sentences:

  • (1) In certain cases the ulcerous crust is removed with chloramine.
  • (2) A rapid evolution of epithelialization was found in case of treated animals as distinguished from control sample, where the infected crust was far from being healed.
  • (3) Future ice loss and bending of the crust due to rising sea levels have the potential ultimately to raise levels of both earthquake and volcanic activity.
  • (4) A search for an intact blister is always warranted when erosions, oozing, or crusts are noted.
  • (5) In general, healthy panelists evaluated the cakes as sweeter, crust bitterness as greater, and overall eating quality as higher than the panel members with carbohydrate metabolic disorders.
  • (6) The tanks fell from 2,000ft on to the salt crust of the open desert and burst open as they struck the ground.
  • (7) A negative correlation between the number of mites and the presence and extensiveness of crusts was observed.
  • (8) The presence of subcorneal pustules in a solitary, indolent, crusted plaque, or in erythema annulare-like lesions with a trailing scale, is evidence of atypical psoriasis.
  • (9) Requirements for intranasal douching with saline have varied; however, we have had no problems with bothersome crusting following b.i.d.
  • (10) Disadvantages are a longer healing period and temporary crust formation as in conchotomy, the high technical effort and cost of the laser.
  • (11) Crusting was found around the lashes, and the lids developed loss of lashes and hair.
  • (12) Within three weeks after treatment was initiated, all animals were free of crusts.
  • (13) After the crust falls, carrying away some tattoo pigment on its deeper surface, a pale-pink scar forms, then gradually fades in several months.
  • (14) We report a case of nonvesicular hydroa vacciniforme in which only extensive crusting associated with hypertrophic scarring on sun-exposed skin was present.
  • (15) The absorption of mercury was investigated after three phase crusting by Grob on a second-degree scald burn of 10 to 15% of the body surface in rats.
  • (16) For oxalate stones a separation of the outer layer (crust) from the inner layer (core) marked the point of maximum load.
  • (17) The vesicles progress to pustules, then to crusts that eventually are lost.
  • (18) A case of localized CrS appearing as a yellowish and crusted plaque on the second right toe is reported in a woman with AIDS.
  • (19) All the patients were elderly women who developed chronic, extensive, pustular, crusted and occasionally eroded lesions of the scalp which produced scarring alopecia.
  • (20) For all their apparent beauty and fragility, just think of coral reefs as big lumps of rock with a living crust.