animal tissue
TRANSCRIPT
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Major Animal TissuesEpithelial TissueConnective TissueMuscular TissueNervous Tissue
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Epithelial TissueFunction: lines internal organs and covers the body
Outer part is exposed to air or internal fluid; other side is composed of basement membrane
Cells are tightly packed Function?
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Epithelial TissueTypes
According to shape Squamous Cuboidal Columnar
According to arrangement of cell Simple Stratified Pseudostratified
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Connective TissueBloodBonesCartilageLoose and Dense Connective Tissue
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Connective TissueFunction: Binding and supportCells are embedded in an extracellular matrixCells secrete the matrixMatrix: jelly-like or solid
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Muscular TissueFunction: for movement/contraction; heatThree types:
SkeletalSmoothCardiac
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Nervous TissueSenses stimuli and transmits signals called nerve impulses from one part of an animal to another
Consists of a cell body and long extensions called dendrites (towards cell body) and axons (towards another cell or an effector
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Tissue Type Epithelial Connective Muscle Nerve
Cell Shape Flattened, cuboidal, columnar
Irregular or round Elongated Cell appendages branched
Cell Arrangement Single multilayered Scattered in matrix In sheets or bundles Isolated or networked
Location Body covering or lining organs or cavities
Supports other organs Lining internal organs, make skeletal muscles
Concentrated in brain and spinal cord + all over the body
Surface Feature of Cells
Cilia, microvilli - - -
Matrix Type Basement membrane Varied – protein fibers + liquid, gelatinous, firm to calcified
- -
Matrix Amount Minimal Extensive Absent Absent
Unique Feature No direct blood supply, except for glands
Cartilage has no blood supply
Can generate electrical signals, force and movement
Can generate electrical signal