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Ch 17 G.H. Biology

Guest Hollow Biology Chapter 17 vocab

amniote animal that produces eggs with internal membranes that allow gases but not water to pass through so the embryo can breathe without drying out (reptile, bird, or mammal)
animal heterotrophic, multicellular eukaryote with cells that lack cell walls, member of the animal kingdom
exoskeleton non-bony skeleton that forms on the outside of the body of some invertebrates and provides protection and support
invertebrate animal that lacks a vertebral column, or backbone
notochord stiff support rod that runs from one end of the body to the other in animals called chordates
vertebral column bony support structure that runs down the back of a vertebrate animal, also called a backbone
vertebrate animal with a vertebral column, or backbone
bilateral symmetry symmetry of a body plan in which there are distinct head and tail ends, so the body can be divided into two identical right and left halves
cephalization concentration of nerve tissue in one end of an animal, forming a head region
coelom fluid-filled body cavity
complete digestive system digestive system consisting of a digestive tract and two body openings (mouth and anus)
ectoderm outer embryonic cell layer in animals
endoderm inner embryonic cell layer in animals
hydrostatic skeleton type of internal support in an animal body that results from the pressure of fluid within the body cavity known as the coelom
incomplete digestive system digestive system that consists of a digestive cavity and a single opening that serves as both mouth and anus
larva (plural, larvae) juvenile stage that occurs in the life cycle of many invertebrates, fish, and amphibians and that differs in form and function from the adult stage
mesoderm embryonic cell layer in many animals that is located between the endoderm (inner cell layer) and ectoderm (outer cell layer)
pseudocoelom partial, fluid-filled cavity inside the body of some invertebrates
radial symmetry symmetry of a body plan in which there is a distinct top and bottom but not distinct head and tail ends, so the body can be divided into two halves like a pie
segmentation division of an animal body into multiple segments
Created by: khirschy
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