The Journal of Anatomy and Physiology, Volume 3Macmillan, 1869 |
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action Anatomy animal aorta aortic appears arch Archiv artery atropia bands biceps birds blood blood-vessels body brain branch Calabar bean carbonic acid cardiac cartilage cause cells Centralblatt cervical cilia ciliary muscle cilium condyle connected contraction coracoid crania described developed digits dilatation diminished division dorsal doses effects epiphyses epithelium Eustachian tube excitability experiments extensor femur fibres fibular flexor fluid fore frog goblet cells hæmoglobin heart Henle humerus inches incisors increased influence inner inserted irritation latter levator ligament limb lower mammals mediastinum medulla oblongata membrane metacarpal metatarsal bones motor movements muscular nerves observed organ orifice origin outer oxygen paralysis pass Physiologie poisoning portion posterior pressure produced Professor pronator protoplasm rabbit radial respiration roots side skull solution spinal cord sternum structure strychnia substance surface teeth temperature tendon tetanus tibia tibial tion tissue tooth transverse ulna upper usually vagi vagus valve ventricle vertebra vessels
Popular passages
Page 122 - ... and are continued down into the spinal marrow; and these crura or processes afford double origin to the double nerves of the spine. The nerves proceeding from the Crus Cerebelli go...
Page 117 - I was .burning', or, on the eve of a grand discovery. I consider the Organs of the outward senses as forming a distinct class of nerves from the others. I take five tubercles within the brain as the internal senses. I trace the nerves of the nose, eye, ear, and tongue to these. Here I see established connection — there the great mass of the brain receives processes from the central tubercles.
Page 123 - If all ideas originate in the mind from external impulse, how can we better investigate the structure of the brain than by following the nerves, which are the means of communication betwixt the brain and the outward organs of the senses ? The nerves of sense, the olfactory, the optic, the auditory, and the gustatory nerve, are traced backwards into certain tubercles or convex bodies in the base of the brain. And I may say, that the nerves of sense either form tubercles before entering the brain,...
Page 214 - ... as is also that tooth in the lower jaw which, in opposing it, passes in front of its crown when the mouth is closed. The other teeth of the first set are the ' deciduous molars ; ' the teeth which displace and succeed them vertically are the ' premolars ; ' the more posterior teeth, which are not displaced by vertical successors, are the ' molars,
Page 122 - ... are both sent to the tongue: hence it is, in short, that no part is sufficiently supplied by one single nerve, unless that nerve be a nerve of the spinal marrow, and have a double root, a connection (however remotely) with both the cerebrum and cerebellum. Such nerves as are single in their origin from the spinal marrow will be found either to unite in their course with some other nerve, or to be such as are acknowledged to be peculiar in their operation.
Page 117 - I have found some of my friends so mistaken in their conception of the object of the demonstrations which I have delivered in my lectures, that I wish to vindicate myself at all hazards. They would have it that I am in search of the seat of the soul ; but I wish only to investigate the structure of the brain, as we examine the structure of the eye and ear. It is not more presumptuous to follow the tracts of nervous matter in the brain, and to attempt to discover the course of sensation, than it is...
Page 122 - Qontrouling secretly the operation of the body; the last is the Motor nerve of the tongue, and is an instrument of volition.
Page 337 - A purposive route of development and change, of correlation and interdependence, manifesting intelligent will, is as determinable in the succession of races as in the development and organization of the individual. Generations do not vary accidentally, in any and every direction, but in preordained, definite, and correlated courses.
Page 117 - Papillae on the tongue, but with two of those only we have to do at present. Of these, the Papillae of one kind form the seat of the sense of taste; the other Papillae (more numerous and smaller) resemble the extremities of the nerves in the common skin, and are the organs of touch in the tongue. When I take a sharp steel point and touch one of these Papillae, I feel the sharpness. The sense of touch informs me of the shape of the instrument. When I touch a Papilla of taste, I have no sensation similar...
Page 117 - If light, pressure, galvanism, or electricity produce vision, we must conclude that the idea in the mind is the result of an action excited in the eye or in the brain, not of any thing received, though caused by an impression from without. The operations of the mind are confined not by the limited nature of things created, but by the limited number of our organs of sense.