Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


Invertebrate an animal that does not have a backbone
Neuron a special tissues that make fibers
Ganglion a mass of nerve cells
Brain an organ that controls nerves throughout the body
Gut the digestive tract
Coelom a body cavity that contains the internal organs
Regenerate to grow back
Medusa Polyp swin through the water
nematocyst roundworm/ stinging worm
parasite an organism that invades and feeds om the body of another living organism
Polyp attach to a surface
pores the wholes of the outside of a sponge body/ let the water in the sponge
collar cells line the central cavity of a sponge/filter and digest food from the water that enters the body
osculum a whole on top of the sponge/ lets the water out
spicules sharp skeleton
spongin soft skeleton
phyla-Cnidaria a group of invertabrates that have stinging cells
phyla-Platyhelminthese flatworms
Created by: sabibi111