University:
Dakota State University
Course:
BIOL 365 | Vertebrate Zoology
Academic year:

2022
Views:

347

Pages:

4
Author:

kundgetanufv

Topic 1 Chapter 1 INTRODUCTION Introduction to Comparative Vertebrate Anatomy Why study Comparative Vertebrate Morphology???? salmon shark Why study Comparative Vertebrate Morphology???? - form/morphology matters and depends on its function (a) Homocercal tail Sweeping, side-to-side movements (a) common in fishes with neutral buoyancy, drive the body forward. -salmon, tuna, trout (b) swimming strokes propel the fish forward, and motion of the long extended upper lobe imparts an upward lift to the posterior end of the fish. -shark Pectoral fin (b) Heterocercal tail Fig 1.1 Homocercal and Heterocercal fish tails The importance of studying comparative anatomy -comparison of parts highlights the differences and why those differences matter -Hence, functional analysis helps answer our question and gives a better understanding of animal design Functional morphology - discipline that relates a structure to its function -historical (evolution) vs. a nonhistorical context (extrapolation) Heat Cycle Stages of Cat Prestrus Cara Extra Diestrus Anestrus -Comparison is a tool of insight that guides our analysis and helps us set up hypotheses about the basis of animal design.

Vertebrate Anatomy - Fish

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