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33 terms

Vertebrate Body Organization keylime12

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vertebrate
organism with a vertical column
anatomy
body structure
physiology
study of functions an organism performs
tight junctions
fusion of cell membranes of adjacent cells, prevents molecules from leaking between cells, protects against mechanical injury to cell
anchoring junctions (desmosomes)
link cytoskeleton one cell to another, makes VERY strong connections between cells
communicating junctions
allow molecules to pass between cells
gap junctions (animals)
cytoplasmic channel between cells
plasmodesmata (plants)
gaps between cell walls
epithelial tissue
covers outside the body and lines body organs, cavities, acts as protective barrier
squatious epithelium
cells are flat
cubodial cells
cubic cells
columnar
cells form columns
connective tissue
connects/supports other tissue
loose corn tissue
loose mesh of collagen fibers, holds tissues/organs in place
collagen fibers
strong, non elastic, made of protein
elastic fibers
elastic
adipose tissue
stores fat for insulation and fuel
fibrous connective tissue
dense parallel collagen fibers, high tensile, non elastic
tendons
connect muscle to bone
ligaments
connect bone to bone at joints
cartilage
collagen fibers surrounded by strong yet flexible carbohydrate matrix
bone
collagen fibers with solid CaPO4 deposited in it
blood
plasma with H2O, salt, dissolved proteins, red blood cells and white blood cells
nervous tissue
transmits and receives signals throughout the body
skeletal
voluntary movements
cardiac
contractile wall of heart
smooth
involuntary movements
homeostasis
maintaining near constant body conditions even when other external environment changes significantly
negative feedback system
change that results in response to counteract that change
positive feedback system
any change that results in a response that amplifies the change
thermoregulation
how animals maintain their internal temperature within a tolerable range
ectotherms
organisms that gain most heat from external sources
endotherms
organisms warmed mostly by heat generated by metabolism