First Book in Physiology: For the Use of Schools |
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Page 40
... tion is as described . You can see , for example , by figure 21 , that it will make no difference in the effect , whether a single fibre go all around , as in a , or whether two fibres lap on to each other , as in b , and are fastened ...
... tion is as described . You can see , for example , by figure 21 , that it will make no difference in the effect , whether a single fibre go all around , as in a , or whether two fibres lap on to each other , as in b , and are fastened ...
Page 48
... tion , but all of it goes towards the lungs . 28. These valves operate just as the valve of the bel- lows does , as seen in Figures 18 and 19 , pp . 37 and 38 . In Fig . 19 the hands are drawing the handles apart , and enlarging the ...
... tion , but all of it goes towards the lungs . 28. These valves operate just as the valve of the bel- lows does , as seen in Figures 18 and 19 , pp . 37 and 38 . In Fig . 19 the hands are drawing the handles apart , and enlarging the ...
Page 61
... acts . Why does the abdomen move outward in inspiration and inward in expira- tion ? What muscles assist in breathing ? Do these muscles act much ordinarily ? chest heaving from severe exercise , or from difficulty of RESPIRATION . 61.
... acts . Why does the abdomen move outward in inspiration and inward in expira- tion ? What muscles assist in breathing ? Do these muscles act much ordinarily ? chest heaving from severe exercise , or from difficulty of RESPIRATION . 61.
Page 71
... tion is , as you have seen in this chapter , to bring the air to the blood in the lungs , that it may purify it and fit it to be used again . But the Creator almost always makes a thing useful in other ways besides the use for which it ...
... tion is , as you have seen in this chapter , to bring the air to the blood in the lungs , that it may purify it and fit it to be used again . But the Creator almost always makes a thing useful in other ways besides the use for which it ...
Page 76
... tion , and various other purposes . Glass must be obtained for the windows , and paper for the walls . A variety of materials is required , to make paints of different colors . All these and various other things must be collected , to ...
... tion , and various other purposes . Glass must be obtained for the windows , and paper for the walls . A variety of materials is required , to make paints of different colors . All these and various other things must be collected , to ...
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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 vertebrę 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...