2. Tissues Types 1) Epithelial 2) Connective 3) Muscle 4) Nervous Seems pretty simple right? Hold that thought… cause here we go. Key thing to remember “ FORM fits the FUNCTION”
3. Tissues: Epithelial Described by SHAPE and LAYERS Layers Simple: A layer a single cell thick Stratified: Many layers thick
4. Tissues: Epithelial Described by SHAPE and LAYERS Shapes “ Squamous” (means Scale) = Flat and Thin Cuboidal (sounds like “Cube” right?) = Cube shaped Columnar (Looks like a “Pillar” right?) = Rectangular in shape “ Squamous” (means Scale) = Flat and Thin “ Squamous” (means Scale) = Flat and Thin
5. Tissues: Epithelial So what happens when you put them together? A Good Description Stratified Squamous Epithelium Found as: Skin or the Lining of your Esophagus
6. Now you try one How many cell layers are there? 1 Making it SIMPLE What shape are the cells? Pillar-like or Rectangular = Columnar Description (NAME)? Simple Columnar Epithelium Found in the GI Tract or Intestines
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8. Tissues: Connective Here we see the Matrix of Bone Hyaline Cartilage Found in the sternum connecting the ribs Bone
9. Tissues: Connective Fibers also make up a good portion of Connective Tissue. Example: Collagen Fibers Lets not forget our friend Blood (Blood Plasma =matrix) He counts too! Lets not forget our friend Blood (Blood Plasma =matrix) He counts too! Fibers also make up a good portion of Connective Tissue. Fibers also make up a good portion of Connective Tissue. Example: Collagen Fibers Fibers also make up a good portion of Connective Tissue.
10. Tissues: Muscles Only 3 kinds (Woo Hoo!!) Skeletal: Multinucleated, long fibers, Striated & Voluntary Smooth: (makes up hollow organs like the stomach, intestines and blood vessels) Single nucleated, non-striated Moves things with peristalsis (think of squeezing a tube of toothpaste) & Involuntary
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12. Tissues: Nervous Neurons are the cell bodies of the Nerve cells Conduct electrochemical impulses across the body They can have extensions that go as long as 3 ft long in some parts of the body!