tissue slides lab practical review human biology
TRANSCRIPT
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TISSUE SLIDES
Lab Practical Review
Human Biology
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Simple Squamous Outer layer of skin aka “epidermis”
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Simple SquamousCheek Cell Smear
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Lung tissue is simple squamous for gas exchange!
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Simple Squamous
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Stratified Squamous(more than one layer of cells)
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Stratified Squamous
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Simple CuboidalSingle layer of “square” cells
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Cuboidal cells are designed to secrete, like those found in the
kidneys
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Simple Cuboidal
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Transitional epithelium includes squamous and cuboidal cells.
• This tissue is found in the bladder and other organs that are designed to stretch!
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Simple Columnar In the small intestine (jejunum)
• Columnar cells ABSORB, ABSORB, ABSORB!!
• What do they absorb in the intestines?
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Pseudostratified columnar cells can also have cilia, like in the trachea.
The cilia are hair-like structures that . . .
• AID IN MOVING SUBSTANCES like mucus, dust, and foreign particles
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Connective TissueAdipose (Fat Cells)
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Adipose
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Hyaline Cartilage(Chondrocytes)
• Found in the rib cage• Allows expansion of
lungs while breathing
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Hyaline Cartilage
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Elastic Cartilage(Chondrocytes)
• This is the bendable cartilage found in the ears.
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Bone (Osteocytes)
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Bone
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Blood(Erythrocytes and Leukocytes)
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Muscle TissueAll cells are called fibers!
Smooth
• Smooth muscle is stringy
• Found in all major organs
• Involuntary with one nucleus per cell
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Smooth Muscle
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Skeletal Muscle
• Has striations that make the fibers appear banded
• Tissue is voluntary and attached to bones
• Several nuclei per fiber
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Skeletal Muscle
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Cardiac Muscle
• Fibers have striations but are also branched
• Tissue is involuntary and found in the heart
• One nucleus per fiber
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Cardiac Muscle
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Nervous TissueAll tissue is made of neurons.
• Neurons appear as star-shaped cells in the brain (cerebrum and cerebellum) and the spinal cord
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Nerve Cells