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17 Cards in this Set
- Front
- Back
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These are the cells that are produced in the first few divisions of the zygote.
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embryonic stem cells
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The major organ system that eliminates waste.
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excretory system
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The major organ system that transports oxygen, nutrients and waste.
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circulatory system
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Why must the body’s internal environment stay within narrow ranges.
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It's important because it helps maintain life.
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List and describe the control systems in the body.
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sensors - gather data
control center - receives data, interprets info, sends messages out communication systems - deliver messages to target organs, tissues targets - respond to change |
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What does a negative feedback loop cause the body to do?
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It counteracts any change in the body to bring you back where you should be
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What are the long-term effects when homeostasis in disrupted?
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It causes more damage, such as diabetes, which effects other systems badly.
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Which organ is the control center for thermoregulation of the body?
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hypothalamus
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What is cell differentiation?
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when committed cells acquire the structures and functions of highly specialized cells
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What is cell determination?
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when most stem cells become committed to develop into only one type of cell
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Describe the body’s level of organization. What is the most complex? What is the least complex?
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cells - tissues - organs - organ systems - organism
organism cells |
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What is apoptosis?
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programmed cell death
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Your body’s control systems maintain homeostasis by regulating what?
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the internal environment - temp.,fluids, nutrient, pH, gases
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Explain a positive feedback loop.
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increases the rate of change away from set points
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How does each organ system coordinate with other organ systems?
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the organ systems communicate through chemical messages and nerve impulses
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Which organ systems interact to regulate the levels of vitamin D in your body?
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circulatory, integumentary, excretory, skeletal
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What types of things cause short-term disturbances in homeostasis?
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illness
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