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Related Flashcards
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Cards In This Set
| Front | Back |
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What are the four different tissue types?
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Epithelial Tissue
Connective Tissue Muscle Tissue Nervous Tissue |
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What does epithelial tissue do? Example?
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Covers surfaces exposed to an external environment (Skin)
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What does connective tissue do? Example?
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Stabilizes and supports other tissues, never in contact with external environment (bone and cartilage)
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What does muscle tissue do? Example?
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Specialized in its ability to contract or shorten, three kinds - skeletal, smooth, and cardiac
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What does nervous tissue do? Example?
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Specialized for the rapid conduction of messages, which take the form of electrical impulses. Two basic types -
Neurons - actually carry the nervous system messages Glial cells - perform the support functions for the neurons |
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What are the three layers or the integumentary system?
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Outer layer - covered by keratin
Middle dermal layer - resides accessory structures (hair follicles, glands, nervous tissues that sense external environment, blood vessels, etc) Lower adipose layer |
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What are the 6 functions of bone?
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Support for muscles, organ, teeth
Protection for brain, spinal cord, lungs, heart Movement Blood formation including immune cells Physiological balance of calcium, phosphate, salts Detoxification of heavy metals |
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What are the 5 functions of muscles?
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Maintain posture
Communication Control openings Heat production Movement - converting potential energy into motion |
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What are the three muscle types?
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Skeletal
Cardiac Smooth |
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What do skeletal muscles do?
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Ordinary muscle that is attached to bone and is contained in our biceps for example (voluntary control)
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What do cardiac muscles do?
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Exist only in the heart (contracts under influence of pacemaker cells)
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What do smooth muscles do?
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Responsible for contractions of the uterus, digestive tract, blood vessels, and the passageway of lungs (Involuntary control)
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What is needed for muscle contraction? How does it occur?
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ATP and calcium. This contraction occurs when stimulated by a neuron and involves the sliding of thin and thick filaments past each other to overlap more when contracted and less when relaxed.
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What are the three types of neurons?
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Sensory
Motor Interneurons |
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What do sensory neurons do?
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Sense conditions inside and outside the body and convey information about these conditions to neurons inside the CNS.
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