Anatomy and Physiology: Designed for Academies and FamiliesBenjamin B. Mussey and Company, 1847 - 342 頁 |
常見字詞
abdominal absorbents action animal aorta arteries and veins body bones brain branches called canal capillary carbonic carotid cavity chest chyle circulation clavicle coat cold composed compression connected contraction conveyed cuticle depression Describe diaphragm digestive organs diminished disease divided duct duodenum dura mater effect elevate exercise extensor external fifth pair filaments fingers flexor fluid fore-arm functions ganglion glands glottis heart humerus impure inferior internal intestines joint larynx layer ligament limbs liver lobe lower extremities lower jaw lungs movements mucous membrane muscles named nasal neck nervous opening pair of nerves papillæ passes plexus portion posterior pulmonary artery pulmonary veins ramify removed Represents respiration respiratory ribs right auricle secretion seen side skin spinal column spinal cord sternum stomach superior supplied surface tendon thoracic thoracic duct thyroid cartilage tibia tion tongue trachea transverse trunk tube ulna upper valves vertebræ vessels vocal wound
熱門章節
第 40 頁 - 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.
第 40 頁 - I counted the perspiratory pores on the palm of the hand, and found 3,528 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...
第 247 頁 - ... 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.
第 235 頁 - ... as to supply to their cerebral organs that extent of exercise which gives health and vivacity of action, and in a few months, the change produced will be surprising. Health, animation, and energy, will take the place of former insipidity and dullness.
第 235 頁 - ... 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.
第 235 頁 - Its tone is impaired by permanent inactivity, and it becomes less fit to manifest the mental powers with readiness and energy. Nor will this surprise any reflecting person, who considers that the brain, as a part of the same animal system, is nourished by the same blood, and regulated by the same vital laws as the muscles, bones, arteries, and nerves.
第 40 頁 - On the pulps of the fingers, where the ridges of the sensitive layer of the true skin are somewhat finer than in the palm of the hand, the number of pores on a square inch a little exceeded that of the palm ; and on the heel, where the ridges are coarser, the number of pores on the square inch was 2268, and the length of tube 567 inches, or 47 feet.
第 247 頁 - To those I address, it is unnecessary to go farther, than to indicate that the nerves treated of in these papers are the instruments of expression, from the smile upon the infant's cheek to the last agony of life. 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...
第 240 頁 - According to this principle, it follows, that in learning a language or science, six successive months of application will be more effectual in fixing it in the mind and making it a part of its furniture, than double or treble the time, if the lessons are interrupted by long intervals.
第 232 頁 - ... side, and she is gifted with much force of character, the evil extends more widely among the children, than when it is on the father's side. Where both parents are descended from tainted families, the progeny is, of course, more deeply affected, than where one of them is from a pure stock.