File:Applied anatomy and kinesiology; the mechanism of muscular movement (1919) (14595925737).jpg

Identifier: appliedanatomyk00bowe (find matches)
Title: Applied anatomy and kinesiology; the mechanism of muscular movement
Year: 1919 (1910s)
Authors: Bowen, Wilbur Pardon, 1864-1928
Subjects: Exercise Muscles Physical education and training
Publisher: Philadelphia, Lea & Febiger
Contributing Library: Robarts - University of Toronto
Digitizing Sponsor: University of Toronto

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
a long lever arm and a large angle. Lifting the cal-caneum, it will depress the front of the foot; since the plantarligaments connect the calcaneum with the outer margin of the footonly, its entire force will be exerted there. Isolated action of the gastrocnemius extends first the ankle- andthen the tarsal joints; the latter joints being somewhat oblique,the last part of the movement depresses the outer margin of thefoot more than the inner, turning the sole somewhat inward. If,while the muscle is being stimulated, the observer pushes stronglyupward on the sole of the foot, the outer margin is found to bedepressed with great power, while the inner margin can be easilylifted and the arch straightened out in spi^e of the contraction.Stimulation of the gastrocnemius while the subject is standing atrest on his feet causes the heels to be lifted and the weight to besustained on the outer margin of the foot. SOLEUS. An associate of the gastrocnemius, lying beneath it on the backof the leg.
Text Appearing After Image:
Fig. 113.—Muscles of the riehf l«„13 ^^ ^^ ^^- ^^om the right side. (Gerrish.) 194 MOVEMENTS OF THE FOOT Origin.—The upper part of the posterior surfaces of the tibia,fibula, and interosseous membrane. Insertion.—By the tendon of Achilles into the calcaneum. Structure.—Penniform sheets. Action.—The soleus has the same pull and leverage on the footas the gastrocnemius, but lacks any connection with the femur. The gastrocnemius and soleus, sometimes called the triceps ofthe leg, act together in all such movements as standing, walking,running, jumping, dancing, climbing, etc., where the weight of thebody is supported on the feet and lifted by th&m. \Mien the kneeis flexed to 90 degrees or more the gastrocnemius seems to be leftout of the coordination, leaving the work of extending the foot tothe soleus; in this position the heads of the former are so low thatit cannot pull effectively. In the frog the tibialis anterior reaches above the knee and isattached to the front o

Note About Images