Echinoderm Flashcards
Organism characterized by tube feet, a calcite body-covering, and a five-part symmetrical body.
Echinoderm
is the internal bone or cartilage structure of animals which have a vertebra and some animals without vertebra.
Endoskeleton
is a small wrench- or claw-shaped appendage with movable jaws
Pedicellariae
is an essential part of the circulation system in echinoderms
Madreporite
one of the numerous minute canals lined with choanocytes which radiate from the paragastric cavity in some sponges and end just below the surface of the sponge.
Radial canal
circular water tube that surrounds the esophagus of echinoderms.
Ring canal
the arms/limbs of an echinoderme
Arm / Ray
symmetry around a central axis, as in a starfish or a tulip flower.
Radial Symmetry
arrangement of an organism or part of an organism along a central axis, so that the organism or part can be divided into two equal halves
Bilateral Symmetry
is a hydraulic system used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration.
Water Vascular System
The abdominal part that extends from the mouth to the end of each ray or arm.
Ambulacral Groove
Any small bony or chitinous structure found in various skeletal parts of animals.
Ossicles
one of the tubular pouches opening into the alimentary canal in the pyloric region of most fishes
Pyloric Caecum
the distal aperture of the stomach, opening into the duodenum.
Pyloric Stomach
a midgut with outpocketings called digestive glands, or hepatopancreas; and a hindgut, or rectum
Cardiac Stomach
Any membranous bag shaped like a leathern bottle, as the dilated end of a vessel or duct; especially the dilations of the semicircular canals of the ear.
Ampullae
The sex organ producing gametes
Gonads
Circular structure that connects the limbs in a starfish
Central Disc
fluid-filled muscular tubes of echinoderms, such as the starfish or sea urchin, used for locomotion, respiration, and grasping food or prey.
Tube Feet
is a male organism’s sperm fertilizing a female organism’s egg outside of the female’s body
External Fertilization
is the process of renewal, restoration, and growth that makes genomes, cells, organisms, and ecosystems resilient to natural fluctuations or events that cause disturbance or damage.
Regeneration
Any one of numerous species of echinoderms belonging to the class Asterioide
Sea star
ophiuroids are echinoderms in the class Ophiuroidea
Brittle star
any of numerous echinoderms (class Echinoidea) that are usually enclosed in thin brittle globular tests covered with movable spines.
Sea urchin
burrowing sea urchins belonging to the order Clypeasteroida.
Sand dollar
Crinoids are marine animals that make up the class Crinoidea of the echinoderms
Sea lilies
any of the 550 living species of crinoid marine invertebrates (class Crinoidea)
Feather stars
any echinoderm of the class Holothuroidea, having an elongated body covered with a leathery skin and bearing a cluster of tentacles at the oral end.
Sea cucumbers
Organism that has no arms, but the circle is rimmed with flat spines that look like daisy petals.
Sea daises
