CH 3 Tissues (CN)
Terms
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- Define Histology
- the science dealing with the microscopic identification of cells and tissue.
- Name the four types of tissue
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1. Epithelial
2. Connective
3. Nervous
4. Muscle - Characteristics of Epithelial tissue
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Closely packed flat cells
Avascular
Exposed to outside (body surface)
Cell division occurs readily
has nerve supply - Two types of epithelial tissue
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Covering and lining epithelium
Glandular epithelium - Epithelial cell shape
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Squamous
Cuboidal
Columnar
Transitional - Describe squamous and give example
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Flat, nucleus located near the upper surface, gives these cells the appearance of a fried egg.
Ex. Skin - Decribe Cuboidal
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Are cube or hexagon shaped with a central, circular nucleus.
Ex. digestion - Describe Columnar
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Are tall with an oval nucleus near the basement membrane. May have microvilli, or cilia.
Ex.respiratory tract - Describe Transitional
- Range from flat to tall that can extend or compress in response to body movement. Ex. Bladder
- Give the names of the cell layers (generic)
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1. Simple (single)
2. Stratified (multiple)
3. Pseudostatified describes single layer cells of different sizes. (appearance of multilayered) - Name the two types of glandular epithelium
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1. Endocrine
2. Exocrine - Endocrine secrete _________ directly into the ___________
- hormones & bloodstream
- Exocrine secrete their substance into _____or ________ which carry secretions to the _____________ surface.
- tube, ducts, epithelial
- Give examples of exocrine secretions:
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Sweat
Saliva
Milk
Stomach acid
Digestive enzymes - Give exocrine classification according to structure
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Unicellular/multicellular
Branched
Simple/compound
Tubular - Give exocrine classification according to function
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Merocrine
Apocrine
Holocrine - Give general characteristics of Connective Tissue
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Has nerve supply (as does ep tissue)
Blood suppley (ep is avascular)
Stucture - Name types of loose CT
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Areolar
adipose
reticular - Name types of dense CT
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Dense regular
Dense irregular - Name types of Cartilage (CT)
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Hyaline (gristle)
fibrocartliage
elastic - Name types of bone (CT)
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Compact
Spongy - Name type of blood & lymph (CT)
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RBC
WBC
thrombocytes - Name the types of Nervous Tissue
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Neurons
Neuroglia or glial cells - Name the 3 types of muscle tissue
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Skeletal
Cardiac
Smooth - ___________are type of eithelial specialization that greatly increases surface area to enhance absorption
- Microvillia
- Blood is a type of connective tissue. TRUE OR FALSE
- True