88 



APPLIED PHYSIOLOGY 



good way to perform artificial respiration : Lay the person 

 upon his back. Kneel down at his head and grasp his 

 arms at his elbows. Now sweep them out from his body 

 and bring them nearly together above his head. This 

 expands the chest and draws air into the lungs. 



Next, sweep the arms downwards and press them hard 

 against his chest. This will force the air out of the lungs 

 and will probably make a sound. Keep this up about as 

 often as you breathe. You may need to keep doing it for 

 an hour or two before a person revives. 



161. Drowning. In cases of drowning, the lungs will 

 contain some water. Then you should turn the person 

 upon his face and lift him by his chest so as to allow the 

 water to drain out. Do this for a few seconds, and then 

 keep on with the artificial respira- 

 tion. Do not get hurried or excited. 

 Remember that the life of the per- 

 son may depend upon your causing 

 slow and continuous breathing. Do 

 not wait for help, but begin at once. 

 162. The voice. By means of 

 the breath we talk, and laugh, and 

 cry, and sing, and make all kinds 

 of sounds to express our thoughts 

 and feelings. Nearly all of these 

 sounds are made in a little box called 

 the larynx, in which the windpipe 

 begins. Its outside can be felt in 

 the upper part of the neck, under 

 the chin, where it forms the 

 Across the middle of the box two bands 

 are stretched. These bands are called vocal cords. They 

 slide sidewise and can be made either tight or loose. 



a 



Back view of the larynx. 



a thyroid cartilage. 

 b vocal cords. 

 movable 



attachment of 



cords. 



d cricoid cartilage. 

 e epiglottis. 



Adams Apple. 



