Phylum Chordata Flashcards
What is the Phylum and what does it mean?
Chordata - cord
What is the symmetry
Bilateral
What are the three germ layers?
Ectoderm (outer), Mesoderm (Middle), Endoderm (inner)
What is complete
Digestive System
What is the skeletal rod present at some stage in the life cycle and its function?
Notochord - provides structural support
What is the nerve cord like and what is the most anterior of the nerve cord?
Single dorsal nerve cord. Brain
What pouches do they have and what can it develop into in aquatic chordates
Pharyngeal pouches and they develop into gill slits in aquatic chordates.
What tail do they have
Postanal tail
What is the thyroid gland that is present called? and the function
Endostyle
Where is the heart?
Ventral heart
What are the blood vessels and circulatory system like?
Dorsal and Ventral Blood Vessel. Closed circulatory system
What is the endoskeleton made of?
Cartilage and bone
What layer is transparent?
Epidermis
What goes into what and exit through what?
Atrium. Atriopore
What is the function of cirrus (Cirri)
separate larger food particles, act as filter