Pcc - Bio 231 - Lab Practical 1 - Diagrams

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Simple squamous epithelium
Tissue has identifiable cells, has a single layer, cells appear tile-like
Function: Allows diffusion and filtration
Found: Lining of heart, blood vessels, and lymphatic vessels

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Stratified squamous epithelium
Function: Protection through ablation
Found: Epidermis

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Simple cuboidal epithelium
Tissue has identifiable cells, has a single layer, cells appear cube-like
Function: Secretion and aborbtion
Found: Kidney tubules, ovary surface

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Simple columnar epithelium
Tissue has identifiable cells, has a single layer, cells appear taller than wide, with nuclei shifted toward the bottom of the cell
Function: Absorbtion, secretion of mucus
Found: Digestive tract, uterus

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Pseudostratified columnar epithelium
Tissue has identifiable cells, has a single layer, but nuclei appear at different levels and one surface is cilliated
Function: Secretion, particularly of mucous
Found: lines trachea and most of upper respiratory tract

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Transitional epithelium
Function: Stretches and allows distension
Found: Lines ureters and bladder

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Aerolar connective tissue
Individual fibers can be seen
Function: Wraps and cushions organs, holds and conveys tissue fluid
Found: Packages organs, surrounds capilaries

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Reticular connective tissue
Fibers can be seen, in a sticky bush configuration
Function: Fibers form a soft internal skeleton that supports other cell types.
Found: Lymphoid organs

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Adipose tissue
Large clear pockets are seen
Function: Reserve food fuel, insulates against heat loss
Found: Under skin, around kidneys, in abdomen and breasts

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Dense regular connective tissue
Fibers are visible, dense, and parallel, cell nuclei are visible along a line
Function: Attaches muscles to bones
Found: Tendons, ligaments

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Dense irregular connective tissue
Fibers are visible, dense, but not parallel
Function: Provides structural support
Found: Dermis, capsules of joints

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Hyaline cartilage
Tissue has visible lacunae, but individual fibers are not identifiable
Function: Supports and re-enforces, cushions
Found: Cartilages of nose, trachea, and larynx, covers ends of long bones and joint cavities

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Elastic cartilage
Tissue has visible lacunae, fibers appear sticky and bush-like
Function: Maintains shape of structure while retaining flexibility
Found: Ear, Epiglottis

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Fibrocartilage
Tissue has visible lacunae, fibers are many
Function: Tensile strength with the ability to withstand compressive shock
Found: Intervertebral discs, pubic symphasis

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Bone

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Skeletal muscle
Tissue is striated, long tubes with multiple nuclei are visible
Function: Movement, locomotion
Found: in skeletal muscles attached to bone

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Cardiac muscle
Tissue is striated, single nuclei per cell is visible, intercalated discs may be present

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Smooth muscle
Tissue is not striated, has an elongated, spindle-shaped nucleus, and may be branched
Function: Propels substances or objects
Found: In the walls of hollow organs

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