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AP/College Biology - 1300+ > Body Systems > Flashcards

Flashcards in Body Systems Deck (199)
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2

This order of crustacea has barnacles that are sessile as adults but free swimming larvae and are hermaphroditic and some have stalks

cirripedia

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class of arthropods that includes insects which is the largest group of animals and there are about one billion billion insects alive at any one time

hexapoda

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three body regions of insects

head, thorax, abdomen

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these permeate all tissues in insects to breathe

tracheae

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This class of arthropods have no tagmata and include centipedes and millipedes and have bodies with a head followed by numerous segments

myriapoda

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this phylum is an ancient group of marine animals with about 6000 species and are deuterostomes and have an endoskeleton

echinodermata

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the blank of echinoderms are bilaterally symmetrical and blank symmetrical as adults which means blank lines

larvae, pentaradial, five

9

echinoderms have an endoskeleton made of calcite plates called blank

endoskeletons, ossicles

10

echinoderms have blank so they can change shape and drop body parts

mutable collagenous tissue

11

papulae are the same as

tube feet

12

there are more than blank extinct classes of echinoderms

20

13

there are five classes of echinoderms and they are

asteroidea, crinoidea, echinoidea, holothuroidea, ophiuroidea

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this class of echinoderm includes seas stars and sea daisies

asteroidea

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this class of echinoderms includes sea lillies and feather stars

crinoidea

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this class of echinoderms includes sea urchins and sand dollars

echinoidea

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this class of echinoderms includes sea cucumbers

holothuroidea

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this class of echinoderms includes brittle stars

ophiuroidea

19

The chordates nearest relative is the blank

echinoderms

20

Five features characterize chordates and they are

nerve cord, notochord, pharyngeal slits, postanal tail, endostyle

21

turned into the spinal cord

nerve cord

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turgid cord of cells wrapped with connective tissue that turned into the spinal column

notochord

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gill arches that form bones in ears

pharyngeal slits

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manages iodine metabolism and turns into the thyroid gland

endostyle

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three subphyla of the chordata phylum

cephalochordata, urochordata, vertebrata

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subphylum of chordata that have all chordate characteristics throughout lifetime but no anterior sense organs or brain

cephalochordata

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oldest chordate which was a cephalochordate

pikaia

28

subphylum of chordata that includes tunicates and are marine animals with tadpolelike larvae and adults typically lose the tail, nerve chord, and notochord

urochordata

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urochordata often secrete a blank which is a cellulose sac that surrounds the animal

tunic

30

subphylum of chordates that includes vertebrates and an endoskeleton made of cartilage or bone

vertebrata

31

chordates with a spinal column

vertebrates