Marine Biology Definitions 2
Marine Biology definition for modules 5-8
Terms
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- Ambulacral Groove
- A channel along the oral surface of echinoderms through which the tube feet protrude
- Closed Circulatory System
- A circulatory system in which the blood always remains in the vessels
- Notochord
- A flexible supportive rod that runs through the length of the body of the chordates
- Mantle
- A sheath of tissue surrounding the organs of a mollusk, producing the mollusk's shell and performing respiration
- Molting
- The process of shedding an exoskeleton and replacing it with a new one
- Open Circulatory System
- A circulatory system in which blood flows out of the blood vessels and into the body cavities, where it comes in direct contact with the cells
- Water Vascular System
- A network of water-filled canals in echinoderms, used for locomotion and feeding
- Dorsal Nerve Chord
- A long bundle of nerve cells located along the dorsal part of an organism's body
- Chitin
- A derivative of carbohydrates that provides both flexibility and support
- Carapace
- An armored shield that covers the anterior portion of crustaceans
- Cephalothorax
- The anterior part of an arthropod body, consisting of a head and other body segments fused together
- Radula
- An organ covered with hundreds of small teeth, used for scraping food into the mouths of mollusks