animal anatomy II.docx - Jenna Safi Bio lab 203 Section 8 3 May 2019 Mammalian Anatomy II Circulatory and Respiratory Systems 1 Quiz in class Picture

animal anatomy II.docx - Jenna Safi Bio lab 203 Section 8 3...

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Jenna Safi Bio lab 203 Section 8 3 May 2019 Mammalian Anatomy II: Circulatory and Respiratory Systems 1. Quiz in class. Picture shown below.
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Homologous structures in evolution are structures from a common ancestor that are found in a lot of animals that seem to be similar and can change over time (over generations) but still
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be considered in that ancestry. The homologous structures function the same but may look different in various animals. By starting at the top of the leg, the scapula bone then following the femur, then the tibia, then the knee which is the patella or in a horse its known as the carpus, then the metacarpus, and the pasterns. The modification in the bones could happen from different reproductions in the offspring and can happen over a long period of time. The Equus Caballus is one of the newest evolutions, but the ancestry goes as far as 55 million years ago, starting with the Hyracotherium. This forelimb of the Equus Caballus looks similar but we can tell its evolution is from a different species. Some of the bones in the
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  • Spring '14
  • Gibson,ARalph
  • right ventricle, left ventricle, right atrium, left atrium, Equus caballus

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