invertabrare Flashcards
an animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes.
Vertebrates
an animal lacking a backbone, such as an arthropod, mollusk, annelid, coelenterate, etc. The invertebrates constitute an artificial division of the animal kingdom, comprising 95 percent of animal species and about 30 different phyla.
Invertebrates
a person or thing that eats or uses something.
Consumer
a mass of nerve cells
ganglion
the digestive tract
gut
a body cavity that contains the internal organs
coelom
a ciculatary systems were fluids are contained in vessels
open circulatory system
the property of being divisible into symmetrical halves on either side of a unique plane.
Bilateral Symmetry
symmetry around a central axis, as in a starfish or a tulip flower.
Radial Symmetry
lack of equality or equivalence between parts or aspects of something; lack of symmetry.
. Asymmetry
members of the phylum Porifera,
Sponges
Cnidaria is a phylum containing over 10,000 species of animals found exclusively in aquatic environments
Cnidarians
a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates
Flatworms
he nematodes or roundworms constitute the phylum Nematoda. They are a diverse animal phylum inhabiting a broad range of environment
Roundworms
an invertebrate of a large phylum that includes snails, slugs, mussels, and octopuses. They have a soft, unsegmented body and live in aquatic or damp habitats, and most kinds have an external calcareous shell.
Mollusks
Vertebrates, and a few invertebrates, have a closed circulatory system. Closed circulatory systems have the blood closed at all times within vessels of different size and wall thickness. In this type of system, blood is pumped by a heart through vessels, and does not normally fill body cavities.
Closed circulatory system
Annelid. The annelids (Annelida, from Latin anellus, “little ring”), also known as the ringed worms or segmented worms, are a large phylum, with over 17,000 extant species including ragworms, earthworms, and leeches.
Annelid worms
a rigid external covering for the body in some invertebrate animals, especially arthropods, providing both support and protection.
Exoskeleton
an eye consisting of an array of numerous small visual units, as found in insects and crustaceans.
Compound eye
olfactory receptors on the antennae bind to odor molecules, including pheromones. The neurons that possess these receptors signal this binding by sending action potentials down their axons to the antennal lobe in the brain
Antenna
a change of the form or nature of a thing or person into a completely different one, by natural or supernatural means.
Metamorphosis
an internal skeleton, such as the bony or cartilaginous skeleton of vertebrates.
Endoskeleton
a network of water vessels in the body, the tube feet being operated by hydraulic pressure within the vessels.
Water vascular system