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21 Cards in this Set
- Front
- Back
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Give 2 examples of how bandaries are maintained w/in the human body. |
1) every cells is surrounded by the external membrane. 2) the whole body is enclosed by the integumentary system, or skin. |
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Which two systems are interrelated for movement of the human body? |
Muscular and skeletal system (nervous) |
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Aside from muscular movement, what other movements can be found w/in the human body to maintain life? |
Cardiovascular, digestive, urinary system |
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What 2 words are used to define the ability to sense changes (stimuli) in the environment and react to them> |
responsive or irritability |
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How does digestion differ b/w a human and uni- cellular organism such as an amoeba? |
The amoeba cell itselfe digest, while the human body is complex and perform for the whole body. |
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Metabolism refers to all the chemical reactions that occur w/in _________ |
body cells |
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What 3 things does metabolism include? |
a) break down complex subscript b) making larger ones from small ones c) nutrients + oxygen = ATP molecules |
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How is metabolism regulated? |
by hormones secreted by the glands of the endocrine system. |
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What is excretion? |
process of removing excreta (waste) from the body |
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Give an example of how the body excretes waste. |
The digestive system rids the indigestable food residues is feces; urinary disposes nitrogen- containing metabolic wastes in urine.
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What happens in the process of cellular reproduction and what is the purpose? |
the original cell divides to daughter cells (for growth and repair) |
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how is the reproduction system regulated? |
by hormones of endocrine system |
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in order for growth and repair to occur, what must happen? |
cell constructing activities must occur at a faster rate than cell-destroying ones. |
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What five factors are needed for an organism to survive? |
nutrients oxygen water body temp atmospheric pressure |
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what happens to the body as its temp. drops below a normal range? |
metabolic reactions = slow->slower-> stop |
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what happens when body temperature becomes too high? |
chemical reactions proceed too fast; body proteins begin to break down. |
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Vocab A state of body equilibrium or stable internal environment of the body. |
Homeostasis |
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Vocab Feedback that causes the stimulus to decline or end. |
Negative Feedback |
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NEgative feedback example |
blood sugar levels |
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vocab feedback that tends to cause a variable to change in the same direction as the initial change; enhances the stimulus. |
Positive feedback |
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Positive feedback example |
childbirth |
