. Human physiology. ibres. These fibres have the powerof contracting in the direction oftheir length and so shortening themuscles ; and thus the bones withwhich the ends of the muscles areconnected are brought nearer to-gether. It is in this way that weare enabled to exercise the bodyin various ways. The muscles, too, assist very largely in givinga rounded form to the body. Muscles are of two lands—voluntary and involuntary. Theformer are under the control of the will, while the latter are have examples of voluntary muscles in those of the face andthe limbs. The muscles of the heart and
. Human physiology. ibres. These fibres have the powerof contracting in the direction oftheir length and so shortening themuscles ; and thus the bones withwhich the ends of the muscles areconnected are brought nearer to-gether. It is in this way that weare enabled to exercise the bodyin various ways. The muscles, too, assist very largely in givinga rounded form to the body. Muscles are of two lands—voluntary and involuntary. Theformer are under the control of the will, while the latter are have examples of voluntary muscles in those of the face andthe limbs. The muscles of the heart and the stomach are of theinvoluntary kind. Those muscles which move the bones are connected with themby strong white fibrous masses called tendons (fig. 4). The digestive or alimentary system (Lat. alimentum, nourish-ment) consists of the food-passage and the various organs which pre-pare the digestive fluids. The food-passage consists of the mouthpharynx, oesophagus or gullet, stomach, and intestines. (See fig 80 ). Fig. 2.—The Ligaments of theWrist. GENERAL BUILD OF THE HUMAN BODY 5 The pharynx (Gr. pharunx, the throat) is the cavity situatedbehind the mouth, with which it is continuous.
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