File:Elementary anatomy, physiology and hygiene for higher grammar grades (1900) (14595195360).jpg

Identifier: cu31924031222031 (find matches)
Title: Elementary anatomy, physiology and hygiene for higher grammar grades
Year: 1900 (1900s)
Authors: Hall, Winfield Scott, b. 1861
Subjects: Human anatomy Physiology Hygiene
Publisher: New York, American Book Co
Contributing Library: Cornell University Library
Digitizing Sponsor: MSN

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the figure, those shown are only a small propor-tion of all the muscles in the body ; the figure shows onlythe outside muscles. There are about five hundred voluntary muscles. Thevoluntary muscles are those that are under the control ofthe will; the muscles of the legs, arms, body, neck, andface are all voluntary muscles. These voluntary musclesare, most of them, much larger than the involuntary, suchas those in the walls of the stomach and intestines, andusually contract with a quicker and stronger action thando the involuntary muscles. By studying the limbs in the figure, especially the armat the right, you will notice that the upper or middleportions of these muscles are large and full, and that fromthe largest part of the muscle it tapers down to a smallcord at the wrist or ankle. This small cord at theend of the muscle is not composed of muscular tissue,but of very dense and inelastic connective tissue. If thefull, round muscle extended down over the wrists and 251 252 PHYSIOLOGY
Text Appearing After Image:
FiQ. 59. — The muscular system. (Tracy.) THE MUSCLES 253 ankles, it would make these as large around as the fore-arm or calf, and that would make the wrist and anklevery clumsy and awkward. These glistening white cords spread out into a fanshape at the end where the muscle attaches to it. Thisglistening white cord passes over the wrist or ankle, downto the hand or foot, where it is attached to the bone, andthrough this tendon the muscle can move the hands andfeet, with their fingers and toes. Muscles are generallyattached to the bones at each end, and use the bones asaids to accomplish their work. The bones serve as levers.

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