Marine Reptiles phylum Chordata subphylum Vertebrata class Reptilia.
Survey of Animals from the Phylum Chordata Sub Phylum Vertebrata.
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Transcript of Survey of Animals from the Phylum Chordata Sub Phylum Vertebrata.
Survey of Animals Survey of Animals from thefrom the
Phylum ChordataPhylum Chordata
Sub Phylum VertebrataSub Phylum Vertebrata
Common Chordate Common Chordate FeaturesFeatures
Notochord:Notochord: a rod of stiffened tissue supporting the body (later develops into bony units comprising the vertebral column).
Dorsal Nerve Chord:Dorsal Nerve Chord: located just above the notochord and gut region (protected by vertebrae after full development)
Muscular Pharynx:Muscular Pharynx: the entrance to the digestive tract (with small gill slits)
Tail (or rudiment thereof):Tail (or rudiment thereof): located near the anus
All Chordates, at some point in their lives have four features:All Chordates, at some point in their lives have four features: (Click)
Key Characteristics: Key Characteristics: Click to Continue
Body Temperature RegulationBody Temperature Regulation– Ectotherm: body changes temperature in response to external environment– Homeotherm: temperature remains constant regardless of external environment
# Of Heart Chambers# Of Heart Chambers – Two: (atrium/ventricle) allows for mixing of deoxygenated & oxygenated blood
– Three: (2 atria/1 ventricle) more efficient separation of deO2 & O2 blood
– Four: (2 atria/2 ventricles) complete separation of deO2 & O2 blood
Respiratory Organs Respiratory Organs (Exchange of 0(Exchange of 022 & CO & CO22))
– Lungs, Gills, Skin: moist membranes designed for gas exchange in/out of blood
Reproductive Structures Reproductive Structures (Embryo Development)(Embryo Development)– Internal Amniotic Egg: develops inside of mother and contains amnion/amniotic fluid– External Amniotic Egg: develops outside of mother and contains amnion/amniotic fluid– Aquatic Egg: contains no amnion and develops in a liquid (aquatic) environment
Excretory Mechanisms Excretory Mechanisms (H(H22O Conservation) O Conservation)
– Urea: liquid waste released by specialized excretory structures (toxic if accumulates)
– Uric Acid: solid waste (conserves H2O, non-toxic, & therefore can be stored)
Class Pisces (Fish)Class Pisces (Fish)Temperature Temperature RegulationRegulation
EctothermEctotherm
# Heart Chambers# Heart Chambers 22
Breathing Breathing MechanismMechanism
GillsGills
Skin/CoveringSkin/Covering ScalesScales
ReproductionReproduction
(Eggs)(Eggs)
AquaticAquatic
Excretory Excretory MechanismMechanism
Urea / (NHUrea / (NH33))
Means of Means of LocomotionLocomotion
Swimming FinsSwimming Fins Click to continue
Class AmphibiaClass AmphibiaTemperature Temperature RegulationRegulation
EctothermEctotherm
# Heart # Heart ChambersChambers
33
Breathing Breathing MechanismMechanism
Skin / GillsSkin / Gills
Skin/CoveringSkin/Covering Moist SkinMoist Skin
ReproductionReproduction
(Eggs)(Eggs)
AquaticAquatic
Excretory Excretory MechanismMechanism
Urea / NHUrea / NH33
Means of Means of LocomotionLocomotion
Tail / Fins / LegsTail / Fins / Legs Click to continue
Class ReptiliaClass ReptiliaTemperature Temperature RegulationRegulation
EctothermEctotherm
# Heart # Heart ChambersChambers
3 / 43 / 4
Breathing Breathing MechanismMechanism
LungsLungs
Skin/CoveringSkin/Covering Dry Leathery Dry Leathery ScalesScales
ReproductionReproduction
(Eggs)(Eggs)
AmnioticAmniotic
Excretory Excretory MechanismMechanism
Uric AcidUric Acid
Means of Means of LocomotionLocomotion
Legs / TailLegs / Tail
Click to continue
Class Aves (Birds)Class Aves (Birds)Temperature Temperature RegulationRegulation
HomeothermHomeotherm
# Heart # Heart ChambersChambers
44
Breathing Breathing MechanismMechanism
LungsLungs
Skin/CoveringSkin/Covering FeathersFeathers
ReproductionReproduction
(Eggs)(Eggs)
AmnioticAmniotic
Excretory Excretory MechanismMechanism
Uric AcidUric Acid
Means of Means of LocomotionLocomotion
Wings / LegsWings / Legs
Click to continue
Class MammaliaClass MammaliaTemperature Temperature RegulationRegulation
HomeothermHomeotherm
# Heart # Heart ChambersChambers
44
Breathing Breathing MechanismMechanism
LungsLungs
Skin/CoveringSkin/Covering HairHair
ReproductionReproduction
(Eggs)(Eggs)
AmnioticAmniotic
Excretory Excretory MechanismMechanism
Urea / NHUrea / NH33
Means of Means of LocomotionLocomotion
Legs / Wings / Legs / Wings / FinsFins
Click to continue