Problems of Life and Mind: v. 3 . The physical basis of mindJ.R. Osgood, 1891 |
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Стр. x
... NERVE - CENTRES . 227 CHAPTER VI . WHAT IS TAUGHT BY EMBRYOLOGY ? . 237 CHAPTER VII . THE ELEMENTARY STRUCTURE OF THE NERVOUS SYSTEM ( Difficulties of the Investigation ) ( The Nerve - Cell ) ( The Nerves ) ( The Neuroglia ) ( The ...
... NERVE - CENTRES . 227 CHAPTER VI . WHAT IS TAUGHT BY EMBRYOLOGY ? . 237 CHAPTER VII . THE ELEMENTARY STRUCTURE OF THE NERVOUS SYSTEM ( Difficulties of the Investigation ) ( The Nerve - Cell ) ( The Nerves ) ( The Neuroglia ) ( The ...
Стр. 40
... nerves manifest different degrees of excitability , and the same nerve differs at different times . Thus the fifth pair , in a poisoned animal , retains its excitability long after the others are paralyzed ; and the patient under chlo ...
... nerves manifest different degrees of excitability , and the same nerve differs at different times . Thus the fifth pair , in a poisoned animal , retains its excitability long after the others are paralyzed ; and the patient under chlo ...
Стр. 41
... nerve and muscle is seen in this , that the more the muscle is excited the feebler its contractions become ; this decrease in contractility is com- pensated by an increased excitability in its nerve ; so that while the muscle demands a ...
... nerve and muscle is seen in this , that the more the muscle is excited the feebler its contractions become ; this decrease in contractility is com- pensated by an increased excitability in its nerve ; so that while the muscle demands a ...
Стр. 76
... nerve - cell , which has been endowed with mysterious powers , and may be said to have usurped the place of nerve - tissue . I shall have to speak of this in the next problem . Here I only warn the student against the common error . The ...
... nerve - cell , which has been endowed with mysterious powers , and may be said to have usurped the place of nerve - tissue . I shall have to speak of this in the next problem . Here I only warn the student against the common error . The ...
Стр. 146
... nerve - cell ; fibres , but never a fibre of elastic tissue ; tubes , but never a nerve tube ; vessels , but never a vessel with muscular coatings ; solid " skeletons , " but always from an organic substance ( cellulose ) , not from ...
... nerve - cell ; fibres , but never a fibre of elastic tissue ; tubes , but never a nerve tube ; vessels , but never a vessel with muscular coatings ; solid " skeletons , " but always from an organic substance ( cellulose ) , not from ...
Часто встречающиеся слова и выражения
acid activity admit Anatomy animal arrest aspect assigned axis cylinder become body brain called cause cells centre cerebellum cerebral cerebrum chemical co-operation combination complex conclusion connection Consciousness Contractility contraction dependent elements Epigenesis evidence evolution excitation existence experiences expression external fact Feeling fibres fibrils force forms frog function ganglia ganglion ganglionic cells gray substance hypothesis idea innervated interpretation irritation laws limbs manifested matter MAX SCHULTZE mechanism medulla medulla oblongata ment mental modes molecular mollusc motor move movements multipolar cells muscles muscular Natural Selection nerve nerve-cells nerve-fibre nerve-tissue neural process neuroglia objective observed optic optic nerve organites organized substance ovum pass phenomena physical physiological plasmode posterior principle produced protoplasm reaction reflex actions Reflex Theory removed resemblance result retina sensation Sensibility sensorium sensory sentient similar skin spinal cord stimulation structure suppose tion tissue unconscious vital volition whole
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Стр. 32 - Life is the twofold internal movement of composition and decomposition, at once general and continuous...
Стр. 427 - ... danger, some change arises in his brain which determines the animal spirits to pass thence into the nerves, in such a manner as is required to produce this motion, in the same way as in a machine, and without the mind being able to hinder it. Now...
Стр. 122 - It may metaphorically be said that natural selection is daily and hourly scrutinising, throughout the world, the slightest variations; rejecting those that are bad, preserving and adding up all that are good; silently and insensibly working, whenever and wherever opportunity offers, at the improvement of each organic being in relation to its organic and inorganic conditions...
Стр. 93 - What should we say to the architect who could not form a museum out of bricks and mortar, but was forced to begin as if going to build a mansion ; and after proceeding some way in this direction, altered his plan into a palace, and that again into a museum...
Стр. 154 - So again, it is probable, from what we know of the embryos of mammals, birds, fishes and reptiles, that these animals are the modified descendants of some ancient progenitor, which was furnished in its adult state with branchiae, a swim-bladder, four fin-like limbs, and a long tail, all fitted for an aquatic life.
Стр. 437 - ... against them, stops, and then, feeling over the objects with his hands, passes on one side of them. He offers no resistance to any change of direction which may be impressed upon him, or to the forcible acceleration or retardation of his movements. He eats, drinks, smokes, walks about, dresses and undresses himself, rises and goes to bed at the accustomed hours. Nevertheless, pins may be run into his body, or strong electric shocks sent through it, without causing the least indication of pain...
Стр. 138 - Analogy would lead me one step further, namely, to the belief that all animals and plants have descended from some one prototype. But analogy may be a deceitful guide.
Стр. 219 - Science appears but what in truth she is, Not as our glory and our absolute boast, But as a succedaneum, and a prop To our infirmity. No officious slave Art thou of that false secondary power By which we multiply distinctions, then Deem that our puny boundaries are things That we perceive, and not that we have made.
Стр. 454 - The soul stands related to the body as the bell of a clock to the works, and consciousness answers to the sound which the bell gives out when it is struck.
Стр. 123 - ... organic being to another being, been perfected? We see these beautiful coadaptations most plainly in the woodpecker and...