A Treatise on Anatomy, Physiology, and Hygiene: Designed for Colleges, Academies, and Families |
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Common terms and phrases
absorption air-cells anatomy animal heat aorta auricle bathing become blood body bones brain branches breathe bronchia bronchial called into action canal capillary carbonic acid cartilage cause cavity chest chyle circulation clothing coat cold color composed contraction cuticle diaphragm digestive organs diminished disease duct duodenum effect exercise Explain fig external fibres fingers fluid functions Give glands glottis heart HYGIENE illustrated impure influence intestine labor lacteals larynx layer ligaments limbs lungs lymphatics matter mental movements mucous membrane muscles muscular nervous system Observation oxygen pair of nerves papillę passes person physiology portion posterior produced proper pulmonary artery pulmonary vein pupil pure air quantity removed respiration respiratory ribs right auricle secretion sensation spinal column spinal cord sternum stomach structure substance surface teeth temperature tendons thoracic duct tion tissue tongue trachea true skin tube upper valves veins vessels vocal warm
Popular passages
Page 282 - 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 346 - We can readily conceive why a man stands with eyes intently fixed on the object of his fears, the eyebrows elevated to the utmost, and the eye 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 object of his apprehensions — its direct influence on the outward organ.
Page 356 - 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 356 - Precisely analogous phenomena occur when, from intense mental excitement, the brain is kept long in a state of excessive activity. The only difference is, that we can always see what happens in the eye, but rarely what takes place in the brain. Occasionally, however, cases of fracture of the skull occur, in which...
Page 359 - From neglecting proper intervals of rest, the vascular excitement of the brain, which always accompanies activity of mind, has never time to subside, and a restless irritability of temper and disposition comes on, attended with sleeplessness and anxiety, for which no external cause can be assigned. The symptoms gradually become aggravated, the digestive functions give way, nutrition is impaired, and a sense of wretchedness is constantly present, which often leads to attempts at suicide.
Page 154 - ... ascends obliquely to the under surface of the arch of the aorta, where it divides into the right and left pulmonary arteries.
Page 354 - ... 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 351 - Unfortunately, it is not merely as a cause of disease that hereditary predisposition is to be dreaded. The obstacles which it throws in the way of permanent recovery are even more formidable, and can never be entirely removed. Safety is to be found only in avoiding the perpetuation of the mischief.
Page 347 - 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 355 - If we turn away and relieve the eye, the irritation gradually subsides, and the healthy state returns ; but if we continue to look intently, or resume our employment before the eye has regained its natural state by repose...