Lab 5

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Lab 5
2011-04-25 14:20:15
Digestive Tissue Types

Lab Practical 2
Show Answers:

    • A - simple columnar epithelium (like bricks on end)
    • B - simple columnar epithelium with cilia.
    • C - stratified squamous epithelium.
    • D - simple squamous epithelium (like floor tiles)
    • E - transitional epithelium.
    • F - pseudostratified epithelium.
    • G - cuboidal epithelium (like dice)
    • H - choanocytes
    • I - stratified columnar epithelium with cilia.
  1. prepared slide of human skin
  2. areolar (loose) connective tissue; contains fibroblasts and mast cells sometimes can be seen; located under the skin
  3. adipose tissue: the slide had a blob with salmon/orange lining of little blobs and was clear inside; CONNECTIVE tissue; located around/under the skin
  4. ground bone slide; looks like conglomerated oyster shells; connective tissue; osteocytes; located in compact bone
  5. hyaline cartilage (gristle); exists on the ventral ends of ribs; in the larynx, trachea, and bronchi; and on the articular surface of bones; looks like skin excema; called chondrocytes; located in the nose/trachea
  6. doesn't really look like this really; butt connective tissue that was little balls of green on a purple background; consists of reythrocytes, basophils, and the funky ones are leukocytes
  7. ectoderm
    skin cells of epidermis, neuron of brain, pigment cells
  8. mesoderm
    cariac/skeletal/smooth muscle, red blood cells, tubules of kidneys
  9. endoderm
    Lung cell (alveolar cell), thyroid cell, Pancreatic cell
  10. epithelial tissue
    covers the outside of the body & lines the organs and cavities within the body; ex: outer layer of skin, inside of mouth/stomach, tissue surrounding organs; cells are closely joined; PRIMARY body tissue in humans
  11. collagenous fibers
    type of connective tissue fiber made of protein that provides strength and flexibility
  12. elastic fibers
    type of connective tissue fiber made of protein that stretches and snaps back to its original length
  13. reticular fibers
    connective tissue fiber made of protein that joins connective tissue to adjacent tissues
  14. connective tissue
    binds and supports other tissues; inner layer of skin, tendons, ligaments, cartilage, bone, adipose tissue, blooooooood
  15. skeletal muscle
    striated muscle; is responsible for voluntary movement; nuclei are on the SIDES of the cells; attached to the bone
  16. smooth muscle
    responsible for involuntary body activities; in organ walls like the intestines
  17. cardiac muscles
    responsible for contraction of the heart; located in the heart
  18. largest organ of the vertebrate body?
    SKIN! protects from dehydration/bacterial infection, helps regulate body temp, receives stimuli from environment
  19. enzymatic hydrolysis
    splits bonds in molecules with the addition of water
  20. absorption
    uptake of nutrients by body cells
  21. mamalian digestive system consists of:
    • alimentary canal: mouth, pharynx, esophagus, stomach, small intestine (duodenum, jejunum, ileum) large intestine (colon + rectum)
    • and
    • accessory glands:
    • pancrease, gall bladder, liver, salivary glands