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15 Cards in this Set
- Front
- Back
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what is the evolutionary trend?
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there haas been an evolutionary trend toward larger size.
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What does it mean to be geometriclly similar?
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corresponding sides are in a constant ratio and corresponding angles are equal
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What is Isometry?
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objects that vary in size but not shape. they are geometrically similar.
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SA:volume
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varies with size. an animal with a 6/1 SA:volume couldn't be a endotherm because it would lose too much heat.
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What is allometry?
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Objects that vary in size and shape or proportions.
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why can't a the lenght/mass be graphed linear?
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to big of a line so graph on a log axis(the slope of the line is an exponent)
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What is considered isometric?
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a equals 3
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human adults - isometrir or allometric?
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isometric
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how do human grow - iosmetric or allometric?
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allometric
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how does skeletal mass vary - isometrc or allometric?
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allometrically
a = 3.25 -the bigger you are, the more skeltal mass you need. a bigger organism needs a bigger skeleton to deal with the stressed on earth. puts a limit on size becuase the largetr the elepehant, the bigger the skeleton. |
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What about skeletal mass in aquatic vertebrate? - isometric or allometric
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isometric - no limit based on size b/c no stress from walking on land. all aquatic animal no matter what size will have same % skeleton.
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brain mass - isometric or allometrc?
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allometric - proportional to our surface area. larger animals have proportionatally smaller brains. sensory receptors proportional to surface area.
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metabolic rate - isometric or allometric?
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allometric - ability to metbolic a drug is based on surface area.
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cell body size - isometric or allometric?
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all cells are the same size.
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Jonathon Swift (Gulliver's Travels) - good physiologist?
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NO - gulliver was 12 times the size of a lilluputian. metabolism is proportional to his square. they gave him enough food for the cube of his size.
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