A Treatise on Anatomy, Physiology and Hygiene: Designed for Colleges, Academies and Families |
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absorption anatomy animal aorta auricle become blood body bones brain bronchia called into action carbonic acid cartilage cause cavity chest chyle circulation clothing coat cold color composed contraction cuticle diaphragm digestive organs diminished disease duct duodenum effect elbow exercise Explain fig extensor external fibres fingers fluid frequently functions Give glands heart heat hygiene illustrated impure influence intestine joints labor lacteals larynx layer left auricle left ventricle ligaments limbs liver lower extremities lungs lymphatic vessels mastication matter minute mouth movements mucous membrane muscles muscular nutrient nutrition Observation oxygen pair of nerves papillę passes person physiology portion posterior prevent produced proper pulmonary artery pupil pure air quantity of food removed respiration ribs right auricle secretion sensation side skin spinal column sternum stimulating stomach structure substance surface teeth tendons thoracic duct tion tissue trachea trunk tube ulna upper valves veins warm
Popular passages
Page 290 - I counted the perspiratory pores on the palm of the hand, and found 3528 in a square inch. Now, each of these pores being the aperture of a little tube of about a quarter of an inch long, it follows that in a square inch of skin on the palm of the hand, there exists a length of tube equal to 882 inches, or 73i feet.
Page 292 - To obtain an estimate of the length of tube of the perspiratory system of the whole surface of the body, I think that 2800 might be taken as a fair average of the number of pores in the square inch, and 700, consequently, of the number of inches in length.
Page 354 - ... largely uncovered : or why, with hesitating and bewildered steps, his eyes are rapidly and wildly in search of something. In this we only perceive the intent application of his mind to the objects of his apprehensions, and its direct influence on the outward organs.
Page 362 - ... who have no call to exertion in gaining the means of subsistence, and no objects of interest on which to exercise their mental faculties, and who consequently sink into a state of mental sloth and nervous weakness.
Page 292 - Surely such an amount of drainage as 73 feet in every square inch of skin, assuming this to be the average for the whole body, is something wonderful ; and the thought naturally intrudes itself, — What if this drainage were obstructed ? Could we need a stronger argument for enforcing the necessity of attention to the skin...
Page 364 - At any time of life, excessive and continued mental exertion is hurtful ; but in infancy and early youth, when the structure of the brain is still immature and delicate, permanent mischief is more easily inflicted by injudicious treatment than at any subsequent period...
Page 365 - ... exemplified in the injurious effects of premature exercise of the bones and muscles. Scrofulous and rickety children are the most usual sufferers in this way. They are generally remarkable for large heads, great precocity of understanding, and small delicate bodies. But, in such instances, the great size of the brain, and the acuteness of mind, are the results of morbid growth ; and, even with the best management, the child passes the first years of its life constantly on the brink of active...
Page 292 - Now, the number of square inches of surface in a man of ordinary height and bulk is 2500 ; the number of pores, therefore, 7,000,000 ; and the number of inches of perspiratory tube, 1,750,000, that is 145,833 feet, or 48,600 yards, or nearly twenty-eight miles.
Page 355 - It is when the strong man is subdued by this mysterious influence of soul on body, and when the passions may be truly said to tear the breast, that we have the most afflicting picture of human frailty, and the most unequivocal proof, that it is the order of functions which we have been considering that is then affected.
Page 366 - ... to be made, from early infancy, to rouse to action the languid faculties of the latter, while no pains should be spared to moderate and give tone to the activity of the former. But instead of this, the prematurely intelligent child is generally sent to school, and tasked with lessons at an unusually early age, while the healthy but more backward boy, who requires to be stimulated, is kept at home in idleness merely on acount of his backwardness.