ECHINODERM VOCAB ONLY

1
ECHINODERMVOCAB ONLY
2

• A radially symmetrical marine invertebrate
• with an endoskeleton, water-vascular
  system,and tube feet such as a sea star, sea
  urchin or sea cucumber _________________________
  
• Special type of radial symmetry in which body
  parts extend outward along 5 spokes
  _______________
• One of the small calcium carbonate plates that
  forms the endoskeleton of echinoderms
  ________________

echinoderm
pentaradial
ossicle
3

• Surface of a starfish on which the mouth is
  located______________
• One of the many small, flexible, fluid filled
  tubes that project from the body of an echinoderm
  and are used in locomotion, feeding, gas
  exchange, and nitrogen excretion
  _________________
• Small pincher-like structure on the surface of
  certain echinoderms that keep the surface clean
  ________________

Oral surface (ventral)
Tube feet
pedicellaria
4

• Surface opposite the mouth and a
  starfish_______________
• Sieve-like opening on the aboral surface of a
  starfish through which water enters the water
  vascular system _________________
• A mass of nerve cells ________________

Aboral surface (dorsal)
madreporite
ganglion
5

• A network of water-filled canals in an echinoderm
  _____________
• Part of the water vascular system that connects
  the madreporite and ring canal _____________
• Bulb-like sac at the base of the tube foot which
  controls water entering and leaving the foot
  ________________

Water vascular system
Stone canal
ampulla
6

• Portion of an echinoderms stomach that is
  extruded through the mouth during feeding
  __________________
• The fluid that is circulated through the body of
  an animal with an open circulatory system
  _________________
• Winged larva seen in echinoderms
  ________________

Cardiac stomach
hemolymph
bipinnaria
7

• Special type of symmetry seen in starfish with 5
  arms _____________
• Development in which the offspring start as small
  versions of adults
• Type of circulatory system in which blood is
  contained in vessels ___________________

Pentaradial symmetry
Direct development
closed
8

• In a sea star the stomach that is connected to
  the digestive glands__________________
• The hemolymph-filled space or body cavity of some
  invertebrates _________________
• One of the many hollow tubes that project from
  the surface of a sea star through which gas
  exchange and nitrogen excretion takes place
  ________________

Pyloric stomach
hemocoel
Skin gills
9

• Nerve that encircles the mouth in a sea star
  __________________
• Organism whose embryonic blastopore becomes the
  anus _______________
• Organism without a backbone ________________

Nerve ring
deuterostome
invertebrate
10

• Type of development in which offspring hatch as
  an immature larva and must change into their
  adult form _____________
• Joining of an egg and sperm outside the females
  body _________________
• Organism that lives in the ocean (salt water)
  ________________

indirect
external fertilization
marine
11

• Nerve that runs along inside the ambulacral ridge
  in each arm of a starfish _____________
• Portion of the sea stars water vascular system
  that runs along inside the ambulacral ridge in
  each arm _________________
• Groove on the oral surface of a sea star that
  holds the tube feet ________________

Radial nerve
Radial canal or ambulacral canal
Ambulacral groove
12

• Greenish digestive enzyme that breaks down fat
  _____________
• Space that surrounds the internal organs
  _________________
• Type of skeleton found inside the body
  ________________

bile
coelom
endoskeleton
13

• Type of symmetry seen in echinoderms in which
  body parts are arranged around a central axis
  _____________
• Development in which the offspring start as an
  immature larva and undergo metamorphosis to
  become adults_________________
• Type of circulatory system in which blood is NOT
  contained in vessels and flows loose inside the
  body cavity and tissue spaces ___________________

Radial symmetry
Indirect development
open