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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

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


Majors animal: Anatomy of Metridium (matching)

Tentacles Defense and prey capture
Mouth Ingestion of food and elimination of indigestible particles (egestion)
Oral disc Raised portion of the mouth (equivalent to the hypostome of hydrozoans)
Gonads Organs for sexual reproduction; gametes are released into the gastric pouches and exit the body through the mouth
Ostium Pore that allows circulation of fluids between adjacent body sections
Pharynx Muscular portion of the gastrovascular cavity for pulling prey inward and expelling indigestible particles
Retractor muscles Expand or contract the body
Gastrovascular cavity Specialized chamber for extracellular digestion of prey
Primary septum One of six thin, vertical walls that divides body into sections, providing support and increased surface area for digestion
Secondary septum One of several thin, incomplete vertical walls that further subdivides the body, producing support and increased surface area for digestion
Pedal disc Tough, fleshy base that attaches organisms to rocks or sandy ocean floor; most anemones can use their pedal discs to move slowly, gliding along the ocean floor
Acontia Contain cnidocytes and may be extended through the mouth to aid in subduing live prey or to provide additional defense against predators
Created by: scandalouscanine