Definition of carapace
1 : a bony or chitinous case or shield covering the back or part of the back of an animal (such as a turtle or crab) 2 : a protective, decorative, or disguising shell the carapace of reserve he built around himself— M. M. Mintz.
What is a synonym for carapace?
carapace, shell, cuticle, shieldnoun. hard outer covering or case of certain organisms such as arthropods and turtles. Synonyms: casing, cuticle, racing shell, eggshell, case, shell, epidermis, buckler, shield, scale, plate.
What is the carapace used for?
In crustaceans, the carapace functions as a protective cover over the cephalothorax (i.e., the fused head and thorax, as distinct from the abdomen behind). Where it projects forward beyond the eyes, this projection is called a rostrum. The carapace is calcified to varying degrees in different crustaceans.
Do humans have a carapace?
Carapace is a scientific term for protective shell. Turtles and crabs have them, but humans don’t — so we make do with bike helmets and elbow pads.
What does mandibles mean in English?
English Language Learners Definition of mandible
: jawbone. : either the upper or lower part of a bird’s beak. : a part of an insect’s mouth that looks like a jaw and is often used for biting things.
What is the plural of carapace?
Word forms: plural carapaces.
What is the carapace made of?
The carapace is covered by an outer layer of individual pieces called scoots. These are made of keratin, just like your hair and nails. Who knew you had so much in common with our reptilian neighbors. Contrary to popular belief, a turtle’s shell is actually a part of the animal, like a bone.
What is a antonym for Fathom?
Antonyms. best exit recede disbelieve consonant vowel. fthm yard linear unit linear measure. fathom (English)
Is carapace a bone?
The carapace and plastron are bony structures that usually join one another along each side of the body, creating a rigid skeletal box. … The carapace and plastron each arose from two types of bone: dermal bones that form in the skin and endochondral bone (bone arising from cartilage) derived from the skeleton.
Is carapace the same as exoskeleton?
is that exoskeleton is (anatomy) a hard outer structure that provides both structure and protection to creatures such as insects and crustacea while carapace is a hard protective covering of bone or chitin, especially one which covers the dorsal portion of an animal.
Do insects have carapace?
carapace noun, plural carapaces – part of the exoskeleton covering the thorax (or cephalothorax) of crustaceans (used in a narrow sense), but also applied to arachnids, such as spiders and scorpions, and sometimes applied loosely to refer to similar-appearing structures in the larval forms of some insects. …
What is the difference between carapace and plastron?
The key difference between carapace and plastron is that carapace is the dorsal part of the shell while plastron is the ventral part of the shell of an animal, especially a crustacean. Arthropods have an exoskeleton or a shell. Some vertebrates, especially tortoises and turtles, also have an exoskeleton.
What does a Cephalothorax do?
4) is divided into two main regions, the cephalothorax and the abdomen. The cephalothorax, a fused head and thorax, contains the internal organs including the digestive system, the heart, and the gonads. It is about one-third of the body length and is covered by a thin shell or carapace.
What happens to the carapace as they grow?
As growth occurs, larger new scutes develop deep to the smaller old scutes so that the exposed edges of the new scutes form a series of growth rings.
What is the upper jaw called?
The upper jaw holds the top teeth in place and supports muscles involved in chewing and facial expressions. It is a major bone in the face. Also called maxilla.
What do you mean by euphoric?
Definition of euphoric
: marked by a feeling of great happiness and excitement : characterized by, based on, or producing euphoria a euphoric mood feeling euphoric He knew he was going to win big, big, big, and he was euphoric about it.—
What is mandible in cockroach?
In cockroach, mandibles are a pair of short, triangular, hard, unjointed,chitinised structures present on either side of the mouth. The inner margins of mandibles have teeth like structures. Each mandible has two types of teeth. They are incising teeth and grinding teeth. These teeth help to masticate food.
How many syllables does the word carapace?
Wondering why carapace is 3 syllables?
What does it mean to be Biramous?
adjective Biology. consisting of or divided into two branches: a biramous appendage.
What is the plastron of a tortoise?
The plastron (plural: plastrons or plastra) is the nearly flat part of the shell structure of a turtle, what one would call the belly or ventral surface of the shell.
What is the bottom of a turtle shell called?
All turtles have a shell. Each shell has a top, called a CARAPACE, and a bottom, called a PLAS- TRON. The shell is made up of large, hard scales called SCUTES.
What are turtle scutes used for illegally?
While illegal sea turtle trade is primarily based on hawksbills, other sea turtle may be killed for their skin to make leather goods. Beauty products are also be illegal if they contain sea turtle oil. Species Affected: Hawksbill sea turtles are overwhelmingly affected by this issue.
What do tortoises do when it gets too hot in the sun?
A tortoise will bask to raise its body temperature, but when the temperature begins to rise above that which it prefers, the tortoise will begin to search for options to keep from overheating. In the wild, a tortoise will escape from excessive heat by finding a shady spot, burying down or by using scrapes and burrows.
Does tortoise eat?
Tortoises like a variety of plant-based foods. Produce: Depending on the species of your tortoise, about 80% of your pet tortoise’s daily diet should be fresh vegetables like kale, dandelions, mustard and collard greens. For fun, toss in a little green or yellow bell pepper, sweet potato, squash or cauliflower.
What is an antonym for girth?
Opposite of the measurement around the middle of something, especially a person’s waist. height. length. tallness.
What is the synonyms of edible?
- succulent.
- tasty.
- comestible.
- eatable.
- fit.
- good.
- savory.
- digestible.
What is the antonym of geography?
disarrangement. Noun. ▲ Opposite of land with regard to its physical features. sky.
Can you buy turtle shells?
Selling turtle shell has been banned since the 1990s, and buying turtle shell products is illegal in most countries. Turtle shell products continue to be sold illegally in many Central American and Southeast Asian countries, and this has posed a threat to the population of this endangered species.
How strong is turtle shell?
A turtle shell is extremely hard, and can withstand thousands of pounds worth of pressure. The average turtle shell has a fracture toughness of 36.4MPa m1/2. Fracture toughness measures the amount of force needed to fracture through a surface.
What does a tortoise do when it is scared?
For example, a scared tortoise will pull its head and limbs back into her shell. … That’s pretty obvious the tort is scared, even to humans who don’t hide in a shell. Turtles will also pull back into their shell if scared or threatened. We will also hide, run or otherwise shrink back in fear.
Do humans have chitin?
Humans and other mammals have chitinase and chitinase-like proteins that can degrade chitin; they also possess several immune receptors that can recognize chitin and its degradation products in a pathogen-associated molecular pattern, initiating an immune response.
Is a turtle an arthropod?
Turtles are not arthropods; in fact, they are reptiles. An arthropod is an animal belonging to phylum Arthropoda, which includes insects, crustaceans,…
Are turtles amphibians?
What are amphibians and reptiles? Amphibians are frogs, toads, newts and salamanders. … Reptiles are turtles, snakes, lizards, alligators and crocodiles. Unlike amphibians, reptiles breathe only through their lungs and have dry, scaly skin that prevents them from drying out.
What is the difference between a thorax and cephalothorax?
Cephalothorax vs Abdomen
Since these are two differentiated regions of the arthropod bodies, there are many differences between cephalothorax and abdomen with respect to their form and function.
Which animals have head thorax and abdomen?
Insects have a head, thorax, and abdomen, with three pair of legs (6 legs) on the thorax. (Crustaceans have legs on the abdomen as well as on the thorax). Most insects have one or two pairs of wings. They are the only invertebrates that fly.
What is molting and why is it important?
Many animals undergo molting as a means of shedding their outer layer—feathers, hair, skin, or exoskeleton—so they can grow bigger or prepare for their next life stage. “It’s a critical event in the life cycle of an organism,” says Donald Mykles, a biologist at Colorado State University.
Is the turtle shell an exoskeleton?
The turtle shell isn’t like any other protective element of any living animal: it’s not an exoskeleton, like some invertebrates have, nor is it made of ossified scales like armadillos, pangolins, or some snake and reptile species. It’s not made of skin. … But the shell was already full formed in those fossils.
Do turtles have lungs?
Cold weather slow down
If the pond water is 1℃, so is the turtle’s body. But turtles have lungs and they breathe air. So, how is it possible for them to survive in a frigid pond with a lid of ice that prevents them from coming up for air?
Are turtle shells bulletproof?
4) The Turtle Shell is Not Bulletproof.
The turtle shell has nerves and blood supply, and is actually made of up to 60 different bones that are connected together, so any injury to the shell structure—might make the turtle bleed and suffer from pain.