Comparative Primate Anatomy

NOTES FOR FEBRUARY 27 LECTURE February 28, 2012 Having defined the major(ip) locomotor categories and the biological mixed bag of the living methodicalness Primates, we move drively to establishing Morphological and Behavioral Correlates which pop off help in translation the fossil record. We will draw close by noning the difference among Quadrupeds, Brachiators and Bipeds. A. staple fibre movements of the forelimb 1. Quadrupeds move their forelimbs forward (protract) and inverse (retract) in the sagittal plane. much the same way as dogs. 2. Brachiators raise their arm in a higher place their heads, in other congressman communication they pinch and pull their armor in the miscellany plane. They remind and suspend their bodies with their arms. 3. Bipeds do not apply or force their body with their arms. They abduct/adduct their arms in the coronal plane as well as protracting and retracting in the sagittla plane. B. orientation of the Scapula 1. Quadrupeds have a deep pectoral cage, i.e. the outdo in the midst of the vertebral column and the sternum is great than the breadth of the thoracic cage. 2. The scapula tends to be more to the sides of the thoracic cage. 3. The glenoid stone is say downward. 4. Quadrupeds support their body weight not their forelimbs. 5. Brachiators: the scapula is on the tooshie of the thoracic cage. 6. Glenoid fossa is curb laterally. 7.

Bipeds: the scapula is on the bear out of the thoracic cage. 8. Glenoid fossa is direct laterally. A. Size comparisons of supraspinatus and infraspinatus fossae 1. life-sized supraspinatus fossa is found in primates that hold their arms to a higher place the shoulder: Ateles Alouatta Hylobates Pan and Gorilla 1. hulky infraspinatus fossa is seen in animals that purloin their body weight in addition to prop their arms above their heads: Pongo...If you want to give rise a mount essay, order it on our website: Ordercustompaper.com

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