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6.13 Lab Exercise

6.13 Lab Exercise

Q Goal Use the modules and review resources to complete the chart on this handout comparing pelvis and other bipedal features of the chimp, human, and Australopithecus afarensis, skeletons. Refer to the module page for images needed for this assignment. Instructions Refer to the module page Week 6 - Pelvis Images for the Assignment for images and 3-D rotations of the four skulls you need to describe and compare. Open the worksheet An111 Comparing Early Hominin Pelvis Shape.docx Download An111 Comparing Early Hominin Pelvis Shape.docxand fill out the table to compare features across the species. The rows will ask for one of the following types of answers. 1. Present or absent: When a feature is either there or not, you can use a + for present and – for absent. For example, “presence of sagittal crest” can be answered + or –. 2. Describe: When you are asked to describe a feature, do so with a few words or short phrase. For example, “shape of dental arcade” can be answered “U-shaped.” 3. Compare: When you are asked to compare, you need to ask “compare to what?” If there are three skulls being compared, you might say X and Y are smaller than Z. Or X is smaller than Y and Y is larger than Z. 4. Measure: Use the measurements you collected in the Early Hominin Skull Measurements Assignment to complete this row and compare the index across species. Alternately, you may use these measurements gathered from teaching materials at LAVC. All measurements are in millimeters Chimpanzee (male) Human (euro male) A. afarensis iliac width 110 125 96 iliac height 167 107 82 Grading Learning and growth take practice and reflection and I am here to support your efforts. All assignments will receive an initial grade based on the provided rubric. If you aren't happy with the points you receive or need to improve your submission, everyone will have the option to review my feedback, revise your work, and resubmit your assignment by the "available until" date 1 week after the original due date. If you have questions about how to improve a submission or about my feedback, please ask me. My goal is to provide feedback within 72 hours, at the latest, of the due date for the assignment. Technical Help How do I submit an online assignment?Links to an external site. How do I upload a file as an assignment submission in Canvas?Links to an external site. How do I submit assignments in the Canvas Student App on my smartphone?Links to an external site. How do I enter a URL as an assignment submission?Links to an external site. How do I view the rubric for my assignment?Links to an external site. How do I know when my assignment has been submitted?Links to an external site. How do I know when my instructor has graded my assignment?Links to an external site. How do I view assignment comments from my instructor?Links to an external site. PreviousNext

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Ape Au. afarensis Modern human General shape of pelvis Elongated, flat, platelike shape Less round, flatter, also platelike shape Bowl-shaped Relative position of sacroiliac (where the sacrum joins the iliac blade) and acetabular joints Unaligned and not close together. Aligned and close together. Aligned and close together. Position of iliac blade relative to spine Long iliac blade that is thin and flat against the back. Iliac blade shorter and wider than human. Iliac blade short, curved and wide