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| in greek and french hist means? |
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| the study of body tissues |
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| epithelial, connective, muscle, nervous |
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| epithelial tissue innervated |
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| nerve endings are found in epithelial tissue |
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| basal lamina: thin, non-cellular sheet made up of proteins, acts as filter and serves as scaffolding for new cell generation |
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| basal lamina + reticular fibers |
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Finger-like extensions of plasma membrane,
moist surfaces
Maximize surface area for nutrient
transport/absorption
Mucus |
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Tail-like extensions that bend and move in
coordinated waves
Push mucus and other substances across
epithelial surface
Flagellum = extremely long cilium (sperm is only
case) |
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| what does the nucleus look like in these cells? |
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| shape of nucleus matches cell type |
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| -Atypical CT (no binding or support) |
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Origin is fibroblasts (made in bone marrow),
function is nutrient delivery
Develops from mesenchyme
Has cells and matrix |
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| blood cells (leukocytes-WBCs, erythrocytes-RBCs, thrombocytes-platelets) |
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coverings and lining
general |
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| membranes that cover areas in the body-made up of an epithelial sheet and underlying of CT proper |
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coverings and linings
cutaneous |
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coverings and linings
mucous |
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| line sorgans that open to outside of body (moist)- many (but not all) secrete mucus |
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covering and linings
lamina propria |
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| loose CT (underlying layer) |
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coverings and linings
serous |
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lines cavity
- simple squamous epithelial layer on top of areolar CT-serous fluid |
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| Myocytes (long, thin fibers) that contain myofilaments |
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muscle tissue
sarcoplasmic reticulum |
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| very little (densely packed cells) |
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muscle tissue
vascularity |
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| HIGH(due to how high metabolic rate needs to get) |
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skeletal muscle
protein amount |
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| composed of nerve cells adn support tissue |
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| brain, spinal cord, nerves |
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| neurons(aka nerve fibers) |
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| long fiber, can be as long as muscle fibers, but only one nucleus-single transmission |
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| sense signal(receive impulses) |
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- Support tissue for neurons – nourishment
- More abundant than neurons
- Insulate and protect neurons |
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• Non-specific, local, acute
• Heat, redness, swelling, pain |
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| • Highly specific, takes a while to develop |
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| replacement of tissue by same kind |
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| creation of fibrous CT (scar tissue) |
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- Undifferentiated cells that continuously renew and produce
new cells when necessary |
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-Found mostly in rapidly replacing tissues (e.g., epidermis),
but are in other tissues too (e.g., brain) |
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| embryonic, embryonic germ, adult |
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| 5-9 weeks-less research on these, but appear more limited |
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| found in bone marrow, skin, blood, and brain |
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| other possible locations of stem cells |
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| umbilical cord and placenta are also being explored |
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| treatment of neurological disorders |
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ethical issues
stem cell line: |
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| mass of cells descending from original cell |
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