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Tissues
Chapter 5
Question | Answer |
---|---|
What is the study of tissues? | Histology |
What are the four tissue types? | Epithelial, Connective, Muscle, and Nervous |
What is epithelial tissue composed of? | tightly packed cells with minimal extracellular matrix |
What is the function of epithelial tissue? | Covers body and organ surfaces, lines body cavities, organ cavities, and forms some glands |
What are the sub types of epithelial tissue? | Simple and Stratified |
What are the sub types of simple epithelial tissue? | Simple squamous, simple cuboidal, simple columnar, pseudostratifed columnar |
What are the sub types of stratifed epithelial tissue? | Stratified squamous, stratified cuboidal, stratified columnar, transitional |
What is connective tissue composed of? | Cells, protein fibers, and ground substances |
What is the function of connective tissue? | Binds, supports, and protects other tissues and organs |
What are the subtypes of connective tissue? | Connective tissue proper, supporting connective tissue, and fluid connective tissue |
What are the sub types of connective tissue proper? | Loose( areolar, adipose, reticular) Dense ( regular, irregular, elastic) |
What are the sub types of supporting connective tissue? | Cartilage(hyaline, elastic, fibro) Bone |
What are the subtypes of fluid connective tissue? | Blood and Lymph |
What is muscle tissue composed of? | Cells that may be spindle shaped, branching, or cylindrical |
What is the function of muscle tissue? | Moves the skeleton and organ walls |
What are the subtypes of muscle tissue? | Skeletal, cardiac, smooth |
What is nervous tissue composed of? | Contains neurons and glial cells |
What is the function of nervous tissue? | Transmits nerve impluses and processes info |
Are there any subtypes of nervous tissue? | No |
What is simple epithelium? | One cell layer thick all cells are in direct contact with basement membrane |
What is stratified epithelium? | Two or more layers of epithelial cells - Only deepest layer are in direct contact with basement membrane |
What is pseudostratified epithelium? | Appears layered - classified as simple because all of cells are attached to basement membrane |
What are squamous cells? | flat, wide, somewhat irregular shape |
What are cuboidal cells? | As tall as they are wide |
What are columnar cells? | slender and taller than they are wide |
What are transitional cells? | Cells that can readily change shape |
What is simple squamous epithelium? | single layer of flattened cells |
What is simple cubodial epithelium? | single layer of cells about as tall as they are wide, spherical and centrally located nucleus |
What is nonciliated simple columnar epithelium? | single layer of cells taller than they are wide, ovalshaped nucleus |
What is ciliated simple columnar epithelium? | single layer of ciliated cells taller than they are wide, ovalshaped nucleus oriented lengthwise in basal region of cell |
What is ciliated pseudostratifed columnar epithelium? | single layer of cells with varying heights, all cells connected to basement membrane - has goblet cells and cilia |
What is nonciliated pseudostratifed columnar epithelium? | Single layer of cells with varying heights, all cells connected to basement membrane- no goblet or cilia |
What is keratinized stratifed sqaumous epithelium? | multiple cell layers, basal cells are cuboidal - apical cells are dead and filled with protein kertain |
What is nonkeratinized stratifed sqaumous epithelium? | multiple cells layers, basal cells are cuboidal - apical cells are alive and kept moist |
What is stratifed cuboidal epithelium? | two or more layers of cells - about as tall as they are wide |
What is stratifed columnar epithelium? | two or mote layers of cells- taller than they are wide |
What is transitional epithelium? | Appearance varies depending on whether tissue is stretched or relaxed |
What are the three basic components of a connective tissue? | cells, protein fibers, ground substance |
What are the two classes of cells in connective tissue proper? | Resident cells and wandering cells |
What are resident cells? | stationary cells that are permanently housed within connective tissues |
What are wandering cells? | continuously move throughout connective tissue |
What are examples of resident cells? | fibroblasts, adipocytes, mesenchymal cells, fixed macrophanges |
What are examples of wandering cells? | Mast cells, plasma cells, free macrophanges, other leukocytes |
Name the 3 protein fibers | Collagen, reticular, elastic |
What are collagen fibers? | unbranced cable like fibers that are strong flexiable - In tendons and ligaments - white fibers |
What are reticular fibers? | similar to collagen but thinner - in lymph nodes, spleen, liver |
What are elastic fibers? | contain protein elastin - yellow fibers - in skin, arteries, lungs |