First Book in Physiology: For the Use of Schools |
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Page 9
... for example , at the hand , and com- What is said of machines made by man ? How does the machinery of the body differ from these ? 1 * pare it with the most ingenious machinery that man has UNIV . OF CHAPTER I THE MACHINERY OF THE BODY.
... for example , at the hand , and com- What is said of machines made by man ? How does the machinery of the body differ from these ? 1 * pare it with the most ingenious machinery that man has UNIV . OF CHAPTER I THE MACHINERY OF THE BODY.
Page 11
... hand , messages are sent from the brain to the muscles that move this part . When the mind wills that the whole body shall move , a great number of these mes- sages are sent in all directions at once . 9. The mind too receives messages ...
... hand , messages are sent from the brain to the muscles that move this part . When the mind wills that the whole body shall move , a great number of these mes- sages are sent in all directions at once . 9. The mind too receives messages ...
Page 38
... hands and handles . Again , when you move the handles of the bellows apart , as represented in Fig . 19 , you FIG . 19 . enlarge the room in the bellows , and so the air rushes in to fill the vacant space . In like manner , when the ...
... hands and handles . Again , when you move the handles of the bellows apart , as represented in Fig . 19 , you FIG . 19 . enlarge the room in the bellows , and so the air rushes in to fill the vacant space . In like manner , when the ...
Page 48
... hands are drawing the handles apart , and enlarging the space in the bellows . Here the valve is open and the air is rushing in , just as the valves of the ventricle open and the blood rushes in when the ventricle dilates or enlarges ...
... hands are drawing the handles apart , and enlarging the space in the bellows . Here the valve is open and the air is rushing in , just as the valves of the ventricle open and the blood rushes in when the ventricle dilates or enlarges ...
Page 49
For the Use of Schools Worthington Hooker. the hands are pressing the handles together , and the valve is shut , and the air is forced out through the nose ; just as , when the ventricle contracts , the valves close , and the blood is ...
For the Use of Schools Worthington Hooker. the hands are pressing the handles together , and the valve is shut , and the air is forced out through the nose ; just as , when the ventricle contracts , the valves close , and the blood is ...
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Common terms and phrases
acid gas air-cells animals apparatus arteries auricle bellows body brain breast-bone breathing building called capillaries carbonic acid carbonic acid gas cavity chain of bones changed chapter chest chinery chyle chyme circulation cles comes concert of action contracts cords daguerreotyping dark blood drum duct elbow-joint fastened feel fibres fingers fluid foot formative vessels front gall-bladder glands goes grinding hand head hearing heart hinge-joint images instrument intestines joint kinds larynx ligaments liver look lower jaw lungs membrane messages mind motion mouth muscles act muscles that move nerves nervous oesophagus organs oxygen parietal bones particles pass pull red blood repairing represented in Fig respiration retina right auricle sent serous membrane shape shoulder-joint side skin socket sound spinal column stomach structures substance tear-gland tears teeth tendons thing tion tube ulna valves variety veins ventricle vertebræ vibration winding passages windpipe
Popular passages
Page 112 - This is one reason also why it is made up of so many different bones, instead of being one solid, tight box. If a blow be received on the head, these bones give a little upon each other, as it is expressed, and so they are not often broken. They give more in the child than in the adult, because, besides being less brittle, they are less tightly put together. It is well that it is so ; for if it were not, the skull would often be fractured, in the frequent falls which the child has. 9. The bones on...
Page 169 - It is often produced by the vibration of the air. This is the case in whistling. In the flute it is the vibration of the air in the instrument that produces the sound. And so of other similar instruments. 3. When the vibrations are equal, the sound is a musical one. But when they are irregular, the sound is a noise, that is, a confused sound. 4. Sound passes through the air by vibrations. It may be said to pass by waves in all directions, just as waves go in all directions on the surface of water...
Page 54 - ... supply of impure air afforded by the Yoga exercises, we should aim at a large supply of pure air. How is this to be secured ? The air we breathe goes down into the lungs, which are full of small air cells, somewhat like a sponge. As a sponge is much larger when its cells are filled with water than when dry, so the lungs swell out when their cells are filled with air. How many little air cells are there in the lungs ? About sixty lakhs ! The air after staying a little time in the air cells, goes...