invertabretes Flashcards
Closed circulatory system
Blood is confined to the vessels as it moves to through the body.
Crop
Where food is stored until it is passed to the gizzard
Clitellum
thickened band of segments
Molting
Shedding the exoskeleton.
Invertebrate
Animals without backbones
Exoskeleton
Hard or tough outer covering
Endoskeleton
Internal skeleton
Vertibrate
Endoskeleton and backbone
Hermaphrodite
Produce eggs and sperm in the same animal body.
Zygote
Sperm penetrates the egg to form a fertilized egg cell
Internal Fertilization
Sperm and egg combine in the animals body
External Fertilization
Egg and sperm combine outside the animals body
Radial Symmetry
Can be divided along any plane, through a central axis into closely equal halves.
Bilateral Symmetry
The animal can be divided into two similar halves through the axis.
Coelom
Fluid filled cavity with tissue that lines the organs.
Pseodocleam
Fluid filled body cavity that between mesoderm and endoderm.
Acoelomates
Animals that do not have a coelom
Protostomes
Mouth opens from the first opening in the gastrula.
Deutorstomes
the anus developes from the first opening in the gaustra
Sessile
Attatched to and star in one place
Cnidocytes
contain nematocysts
Trichinosis
contrcted by eating raw pork or other meat products
open circulatory system
the blood is pumped out of the vessels into the open vein.
close circlatory system
blood is confined to vessels as it moves through the body.
thorax
middle body region consisting of three fused main segments which arthro pods legs and wings are attatched.
