Chordata Quiz Flashcards
Entero?
Intestines
Pneusta?
Abnormal breathing
Brachia?
branches
Ptero?
Wings
Chord?
Sting
Hemi?
Half
Cephalon?
Head
Uro?
Tail
What is the simularities between hemichordates and chorates?
Gill Slits
Live in shallow water
What are the differences between hemichorates and chordates?
Hemi: Stomochord Chord: Notochord Hemi: Bones like starfish Chord: bones like stiffcord Hemi: Tube dweller Chord: lives in tunic
What are the five hallmarks all Chordates have?
Notochord Dorsal Tubular Nerve Chord Pharyngeal Pouches and Slits Endostyle (Thyroid) Postanal Tail
What is the notochord?
flexable rod like structure that acts as a spine
Dense fiberous cells: cartalagenous spine that is one continueous tube
What is a dorsal tubular nerve chord?
A hollow chord
the antieror end becomes enlarged to form the brain
the nervous chord is protected by the neutral arches and th brain is protected by the cranium
Helps us move and picks up sensory and makes solutions.
What is the Pharyngeal Pouches and slits?
Can take in oxygen and filter feeding structure
What is the Endostyle?
Helps with growth and development
Mucus can be used with phayngeal cavity to help food stick to the gills
What is the Postanal Tail?
With somatic muscular and notochord, provides the mobility for swimming
Used for propolsion in the water
Used for balance
What is a urochordata?
Most are seditary, but some are free swimming
Live on the shore lines with tunics (shell like)
During adult metamorphisis, the notocord and tail disappear
U shaped heart
What is paedomorphosis?
Neoteny: Body lags in sexual development
Progenisis: Sped up sexual development
Abnormal sexual development
What organs does a hemichordata have?
Buccal Diverticulum: Hard pallet
Pharyngeal: gill slits
What is enteropneusta?
intestine breathing
hemichordate
What is the Chordata lifecycle?
Zygote Blastula Gameate Tadpole larva Either Metamorphisis or Paedomorphisis Adult
What is the cladogram tree of chordates?
Kindom Animilia
Bilateria
Dueterostomia
Phylum Chordata
What is a Cephalochordata?
Head Chordate Mobile Filter Feeder using cillia Have V shaped myomeres Have Brain Lanceletes (spear like)/ Amphiouxus (both sides sharp) Chordate
What is a Pterobrachia?
Wing branch Shallow water Lives in tubes 1-7 mm Suspension feeder asexual Hemichordate
What are HOX genes?
Master genes of development regulating the expression of subordinate genes
What do HOX genes do?
Regulate neuralcrest cells
Then forms Ectodermal Placodes
New Traits
Otic Vessical?
Sends vibrations back to brain
What does the hind brain regulate?
Balance
What does the middle brain regulate?
Emotional
Scents connect to which part of the brain?
Middle Brain
Vision connects to which part of the brain?
front part
What is the thing that protects the brain?
Cranium
What is an eye?
Gives visual to brain
Where does blood go through?
The gill slits
Runs back and forth from intestines
And the heart
What kind of heart does it have?
Chambered
Increases the energy level
What is the ohfactory bulb?
smell sense
Where does the ohfactory bulb connect to?
Middle Brain
Myomeres?
Muscles
What are the 4 traits to the verttabrata?
Tripartite Brain
Cranium
Chambered HEart
W Shaped Myomeres
How many HOX genes did Vertebrata have?
4
In vertebrates, what becomes more muscular?
Its jaw
Musclular pharynx
How does vertebrates eat?
Opens its mouth to have water and food particles go in and the water goes out the gills
Jaw bones are started here
Where do jaws come from?
Gill slits go from having 7 of them to 5 and 2 becomes jaws because the gills were hitting the cranium and the cranium moved it to the upper mouth part and becomes a gill arch. (Same for second but it goes to the lower mouth)
What is a chambered heart?
It seperates oxygenated blood and dioxyngenated blood
WHat is the difference between V shaped and W shaped myomere
V: Has only a concentrated strength (cephalochordata)
W: Can have more strength in more parts of hte party (Vertebrata)
What is the otic Vessicle used for?
hearing
What part of the brain does the otic vessicle connect to?
hind brain
WHat is the eye for?
Vision senses
What part of the brain connects to the eye?
Front brain
What is the olfactory bulb for?
smell
What part of the brain does the olfactory bulb connect to?
middle brain
What is the front of the brain for?
vision
What is the middle of the brain for?
emotions
What is the hind brain for?
hearing