Chapter 32 Part 1 Flashcards
Extra cellular matrix (ECM)
A complex mesh work of proteins and polysaccharides secreted by animal cells and in which they are embedded.
Animal
A member of a major lineage of eukaryotes whose members typically have a complex, large, multicellular body, eat other organisms, and are mobile.
Neuron
A cell that is specialized for the transmission of nerve impulses. Typically has dendrites, a cell body, and a long axon that forms synapses with other neurons.
Heterotroph
Any organism that cannot synthesize reduced organic compounds from inorganic sources and that must obtain them by eating other organisms. Some bacteria, some archaea, virtually all fungi and animals.
Consumer
Any organism that cannot synthesize reduced organic compounds from inorganic sources.
Model Organism
An organism selected for intensive scientific study based on features that make it easy to work with, in the hope that findings will apply to other species.
Phylum
In Linnaeus’ system, a taxonomic category above the class level an below the kingdom level.
Body Plan
The basic architecture of an animal’s body, including the number and arrangement of limbs, body segments, and major issue layers.
Tissue
Groups of similar cells organized into structural and functional units.
Epithelium
An animal tissue consisting of sheet-layers of tightly packed cells that lines an organ, a duct, or a body surface. Also called epithelial tissue.
Diploblast
And animal his body develops from two basic embryonic cellular layers- ectoderm and endoderm.
Triploblast
An animal whose body develops from three basic embryonic cell: ectoderm, mesoderm, endoderm.
Germ layer
In animals, one of the three basic types of tissue formed during gastrulation; gives rise to all other tissues.
Ectoderm
The outermost of the three basic lawyers in most in animal embryos; gives rise to the outer covering of the nervous system
Endoderm
The innermost layer in animal embryos; gives rise to the digestive track and organ his organs that connect to it.
Mesoderm
The middle of The three basic layers in most animal embryos; gives rise, bones, blood, and some internal organs
Nerve net
A nervous system in which neurons are defused instead of being clustered into large masses or tracks
Ganglion
A massive neurons in a centralized nervous system
Central nervous system (CNS)
The brain and spinal cord and a vertebrate animals
Brain
A large mass of neurons located in the head region of an animal, that is involved in information processing
Symmetry
the quality of being made up of exactly similar parts facing each other or around an axis.
Asymmetrical
having parts that fail to correspond to one another in shape, size, or arrangement; lacking symmetry.
Radial symmetry
An animal body pattern in which there are at least two planes of symmetry. Typically the body is in the form of a cylinder for this, body parts radiating from a central hub.
Bilateral symmetry
Animal body pattern in which there is one plane of symmetry dividing the body into a left side and a right side. Typically, the Body is long and narrow, with a distinct head end and tail end.
