The Evolution of Hands and Feet

Name: The Evolution of Hands and Feet
Brand: LM Publishers
SKU: 9782366599299
Price: 2.49 EUR
Availability: InStock
ISBN: 978-2-366-59929-9

de Robert Macdougall (auteur), Henry Bernard (auteur)

Maison d'édition : LM Publishers

avril 2020

Livre numérique eBook [ePub + WEB + Mobi/Kindle]

101 pages Téléchargement après achat

2,49 €

In the great family of the animals, to which we ourselves belong, many different kinds of feet and hands are to be found. This book deals with the evolution of our feet and hands.

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Résumé

In the great family of the animals, to which we ourselves belong, many different kinds of feet and hands are to be found. This book deals with the evolution of our feet and hands. “The succession of organic modifications which resulted in the formation of the human hand is part of the general process of evolution by which in the animal series the means of progression and of the taking of food were shaped by the environmental conditions under which life was carried on... The functions of life which call into service the bodily limbs are chiefly two—locomotion, an activity which has arisen in connection with the search for food and flight from enemies; and prehension, which is concerned primarily with the grasping and tearing of food, but secondarily also with processes assistive of locomotion and other biological functions, such as sexual congress, the care of the body, burrowing and climbing. Of these two functions, if we regard the vertebrate class only, the former is the more primitive. Upon the office of locomotion the prehensive and manipulative activities of the limb have been superposed as subsequent and more specialized adaptations....”

Auteur

Robert Macdougall (auteur)

Robert McDougall has taught American history at the high school and college level for forty-seven years. He currently teaches American history at Central Catholic High School, Lawrence, Massachusetts. McDougall is the author of The Agitator and the Politician: William Lloyd Garrison, Abraham Lincoln, and the Emancipation of the Slaves.

Auteur(s) : Robert Macdougall, Henry Bernard