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26 Cards in this Set
- Front
- Back
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Mandibles
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Jaw like appendages
crush food |
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Maxillae
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Food Handling
Move water across gills |
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Antennae
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Touch, taste
Statocysts @base |
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Cephalothorax
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1+ thorax segments fused to the head
covered in single carapace plate |
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Abdomen
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one pair of appendages per segment in Malacostraca & Remipedia
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Body Plan
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Schizocoelous
Space filled in leaving room for blood sinuses or hemocoels |
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Muscular System
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Antagonistic pairs
Flexors(draw in) and Extensors(pull away) |
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Respiratory System
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Small Crustaceans:through this layers of exoskeleton(at limbs)
large crustaceans:gills on thoracic legs in "gill cavity" water flow directed by bailers(2nd maxilla) |
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Class Remipedia
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"oar footed"
only crustaceans besides crayfish with appendages beyond cephalothorax |
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Class Cephalocarida
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"Head Shrimp"
No carapace No eyes primative(all the same appendages) and hermaphroditic |
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Class Branchiopoda
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"Lung Feet"
flat legs for respiration 1.Anostraca 2. Notostraca 3. Diplostraca |
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Anostraca
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No carapace
Fairy or brine shrimp |
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Notostraca
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single carapace
tadpole shrimp |
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Diplostraca
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double carapace
Daphnia or water fleas |
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Class Ostracoda
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Like Daphnia but with bivalve carapace (body totally enclosed)
important link in food web |
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Class Maxillopoda
Copepoda |
primary consumer in many aquatic foodwebs
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Class Maxillopoda
Cirripedia |
"curl footed"
Barnacles no abdomen head thru shell for filter feeding |
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Class Malacostraca
Isopoda |
"pill bugs"
only terrestrial crustaceans breath w/ gills |
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Class Malacostraca
Euphausiacea |
Krill
bioluminescent important food web component |
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Class Malacostraca
Decapoda |
5 pairs walking legs
true shrimp, crabs, and lobsters only other group with abdominal appendages (for swimming) |
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Circulatory System
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Open
ventral vessel>gills>hemocoel>heart>Dorsal Vessel>rest of body |
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Excretory System
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Paired green glands in blood sinus in head
filter wastes and dump them through openings in the exoskeleton (fouling) |
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Nervous System and sense organs (3)
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Dorsal brain wraps around esophagus with double ventral nerve cord
1 tactile hairs(sensilla) on chelipeds, mouth parts, and telson 2.statocysts at base of antennae, tiny grains reflect body position 3. Eyes compound w/ ommatidia |
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Metamorphosis
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naupilus molts and adds appendages and segments
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Molting and Ecdysis
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Molting-process of making a new cuticle (secrete protein and chitin)
Ecdysis-shedding of the exoskeleton |
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The fraction of administered dose of a drug that reaches systemic circulation
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Bioavailability (F) = f * (1-ER)
f = absorption ER = extraction ratio = CL/Q |
