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How do you classify epithelial cells by shape?
By the Apical Layer
Cuboidal: cube shaped. as high as it is wide
Columnal: taller than it is wide, nucleus is stretched
Squamous: flat, scale like.
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How do you classify epitheial cells by layers?
Remember the Apical layer
Simple- One layer
Stratified- Multilayer
Pseudostratified- columnal where each cell is touching the basement layer, but only those closest to the top reach the free surface. it looks stratified, but its not. (note cilia)
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Epithelial Cells
Give name, one function, one location
Simple Squamous Epithelium
Function: secretes lubricating substances in serosae
Location: Air sacs of lungs, lining of heart
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Epithelial Cells
Give name, one function, one location
Simple Cuboidal Epithelium
Function: Secretion and Absorbtion
Location: Kidney tubules
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Epithelial Cells
Give name, one function, one location
Simple Columnar Epithelium
*Note Goblet cells
Function: secretion of mucus, enzymes, and other substances
Location: lines the digestive tract
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Epithelial Cells
Give name, one function, one location
Pseudostrafied Columnar Epithelium
*note Cilia
Function: secretion of mucus, propulsion of mucus by cilia
Location: Lining the Trachea
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Epithelial Cells
Give name, one function, one location
Stratified Squamous Epithelium
*note the apical layer
Function: Protects the underlying tissues from abrasion
Location: epidermis of the skin
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Epithelial Cells
Give name, one function, one location
Stratified Cuboidal Epithelium
Function: Protection
Location: sweat glands
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Epithelial Cells
Give name, one function, one location
Stratified Columnar Epithelium
Function: Protection, Secretion
Location (rare): small amounts in male urethra
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Epithelial Cells
Give name, one function, one location
Transitional Epithelium
Function: stretches readily and permits distention of urniary organ by contained urine
Location: Urinary Bladder
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Muscle Tissue (Fiberous Tissue)
Name the muscle, give a function, and a location
Skeletal Muscle
*note the striations
Function: voluntary movement, locomotion
Location: Skeletal muscles attached to the bone
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Muscle Tissue (Fiberous Tissue)
Name the muscle, give a function, and a location
Cardiac Muscle
*note: Intercalated discs
Function: as it contracts, it propels blood in the circulation
Location: walls of the heart
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Muscle Tissue (Fiberous Tissue)
Name the muscle, give a function, and a location
- Smooth Muscle Tissue
- (might be a teased slide)
Function: propels substances or objects (food) along internal passageways
Location: mostly in the walls of hollow organs
Location:
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Connective Tissue
name the tissue, give a function, and a location
- Loose Connective Tissue
- Areolar
Function: wraps and cushions organs
Location: forms lamina propria of mucous membranes
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Connective Tissue
name the tissue, give a function, and a location
- Loose Connective Tissue
- Adipose (may be pink or stained black)
Function: provides reserve fuel
Location: around kidneys and eyeballs
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Connective Tissue
name the tissue, give a function, and a location
- Loose Connective Tissue
- Reticular Tissue
Function: fibers form a soft internal skeleton (Stroma) that supports other cell types
Location: spleen (and other lymphatic organs)
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Connective Tissue
name the tissue, give a function, and a location
- Dense connective Tissue
- Dense Regular
Function: connects muscle to bones
Location: Tendons
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Connective Tissue
name the tissue, give a function, and a location
- Dense Connective Tissue
- Elastic
Function: allows recoil of tissue following stretching
Location: Walls of Large arteries (aorta)
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Connective Tissue
name the tissue, give a function, and a location
- Dense Connective Tissue
- Dense Irregular
Function: provides structual strength, able to withstand tension exerted in many directions
Location: dermis of skin
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Cartilage
name the tissue, give a function, and a location
Hyaline Cartilage
Function: resists compressive stress
Location: cartilage of the nose, costal cartilage of the ribs
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Cartilage
name the tissue, give a function, and a location
Elastic Cartilage
Function: maintains the shape of structure while allowing great flexibility
Location: Ears
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Cartilage
name the tissue, give a function, and a location
Fibrocartilage
Function: tensile strength with the ability to absorb compressive shock
Location: Intervertebral discs
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Bone Tissue
name the tissue, give a function, and a location
Compact Bone (osteon)
Function: stores calcium, creates red blood cells
Location: Long bones
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Blood Tissue
name the tissue, give a function, and a location
Blood
*note: white blood cell, white blood cell, platelet, plasma
Function: transport of respiratory gases, nutrients, and other substances
Location: contained inblood vessels
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Nervous Tissue
name the tissue, give a function, and a location
Spinal Cord Slide
*note neurons
Function: transmits electrical signals from sensory receptors to effectors which control activity
Location: Spinal Cord
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Nervous Tissue
Note the axon covered by the myelin sheath
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