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7 Cards in this Set
- Front
- Back
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What are tissues? |
Makes up the organs and the body parts. |
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What are the four main tissue types? |
Epithelial, Connective,Muscle, and Nervous
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Epithelial |
"Lines and covers" serve as protective layers and/or secretory components of body organs and systems. In the special senses, some act as receptors in a sensory capacity. Most possess common characteristics that contribute to their functional capabilities. |
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Connective |
"Bind and support" consist of dispersed cells that typically lack intercellular contact. Also, most are vascularized with the single exception being cartilage. Extracellular spaces in these tissues are therefore more abundant and contain vessels. In connective tissues, the extracellular space is termed the extracellular matrix because products of specialized cells accumulate here. These products include protein fibers and ground substances(mixes of various chemical substances). |
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Muscle |
"canbecome excited which results in an attraction which typically leads to movement" are specialized for contraction, possessing the ability to shorten and therefore create a contractile force. Substantial metabolism is necessary to produce energy for these contractions and a useful by-product of chemical reactions is heat. Therefore, muscles contribute to thermoregulation, the maintenance of body temperature. |
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Nervous |
"integrational and control" includes all cells that provide communication between other tissue types. The communication network of the body, consisting of a master computer(the brain) linked to multiple sites via complex cabling and wires(the spinal cord and nerves). Various sensing devices(receptors) provide input to the computer and when necessary the computer controls machine response(effectors such as muscles or glands). |
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How to classify Epithelial tissues? |
Number of cell layers cell shapes surface modifications |
