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35 Cards in this Set
- Front
- Back
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Whats the basic function of the following tissue? Epithelium |
Lining, covering, & glandular tissue |
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Whats the basic function of the following tissue? Connective |
Connects body parts |
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Whats the basic function of the following tissue? Muscle |
Contact/shorten to produce movement |
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Whats the basic function of the following tissue? Nervous |
Houses neurons & neuroglia to produce responses |
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What are the functions of epithelial tissue? |
Protection, absorption, filtration, and secretion |
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What are the characteristics of epithelium? |
- fit closely together to form continuous sheets (not glandular) - regenerate themselves easily - have 1 free edge (apical edge) - have no blood flow & depend on diffusion from the capillaries for food & oxygen - lower surface rests on a basement membrane (structureless material from epithelial & connective) |
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How is epithelial classified? Describe 2 ways |
- Relative number of cell layers - Shape of cells |
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Label each type of epithelial above: |
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Describe the difference between simple and stratified epithelium |
Simple- one layer of cells (filtration, secretion, etc) Stratified- more than one cell layer (protection) |
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Name the epithelium cell shapes and draw a sketch of each shape |
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How are psudostratified columnar cells different from simple and stratified cells? |
They rest on a basement membrane, some cells appear shorter than others and their nuclei appear at different heights |
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What is the most common type of stratified epithelium and where is it found? Why is stratified epithelium found there? |
Stratified squamous; found in the esophagus, mouth, outer portion of skin Those sites receive a lot of abuse/friction |
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What type of epithelium would be found in the lungs? Why? |
Simple squamous; because it's found where filtration or exchange of substances by rapid diffusion occurs |
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What is the difference between endocrine and exocrine glands? Which one are we going to be discussing this chapter? |
Endocrine glands lose their connection to the surface and are ductless-their secretions diffuse to blood vessels
**Exocrine glands return their ducts-their secretions empty to the epithelial surface |
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What are two main characteristics of connective tissue? |
- Variations in Blood supply (vascular and avascular) - Extra cellular matrix (non-living material surrounding the cells) |
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What does vascular mean? |
Tubes |
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What is bone tissue also called? |
Osseous tissue |
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What are lacunae? |
Cavities |
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What are osteocytes? |
Bone cells |
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What are key characteristics of bone tissue? |
- composed of osteocytes sitting in cavities - cavities are surrounded by layers of a very hard matrix containing calcium salts and collagen fibers |
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What is bone tissue used for? |
Protection |
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Where is bone tissue located in the body? |
Everywhere- skull, bones, skeletal system, etc... |
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What's a key characteristic of cartilage tissue? |
Less hard, more flexible than bone |
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What does hyaline mean? |
Glassy, blue-white appearance |
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What does fibrocartilage mean? |
Highly compressible |
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What does elastic mean? |
Elasticity |
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What does chondrocyte mean? |
Cartilage cells |
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What are the three different types of cartilage tissue? |
Hyaline, fibrocartilage, elastic |
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Where is Hyaline cartilage found? |
Larynx, attaches ribs to breastbone, joints, skeleton of fetus |
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Where is fibrocartilage found? |
Disks between vertebrae |
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Where is elastic cartilage found? |
External ear, nose |
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What are fibroblasts? |
Cells that make fibers |
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What are key characteristics of dense connective tissue? |
- Composed of collagen fibers but between them are rows of fibroblasts - makes up the lower layers of the skin |
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Where is reticular connective tissue located? |
Stroma, lymphoid organs such as lymph nodes, spleen, and bone marrow |
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In cardiac muscle, intercalated disks allow _____ to pass between _____ |
Ions, cells |
