Elementary Physiology And Anatomy
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In our eReader you can find the full English version of the book. Read Elementary Physiology And Anatomy Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Elementary Physiology And Anatomy
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In this condition each stimulus is thrown in at the height of the contraction due to the preceding stimulus, and so a maximum con- traction is maintained. This permanent contraction is known as complete tetanus, the imperfect fusion with a slower rate being termed incomplete tetanus. The ordinary natural contractions of the skeletal muscles in the body are incomplete tetani ; the rate at which the natural nerve impulses are sent to the muscles being about 12 to 14 per second. A muscle cannot be... maintained in a tetanized condition for any considerable time, because it becomes fatigued and gradually relaxes, although the nerve does not become fatigued and the impulses are still conveyed along it. Even single stimuli repeated at somewhat longer intervals than I'j of a second are sufficient to fatigue a muscle when the stimulation is long continued.
Both cardiac muscle and involuntary muscle have a much longer latent period than voluntary or skeletal muscle. This may be shown, in the case of involuntary muscle, by exposing the intestine in an animal which has just been killed,- and directly stimulating it by pricking with a sharp point.
What to read after Elementary Physiology And Anatomy?
You can find similar books in the "Read Also" column, or choose other free books by Benjamin Moore to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
In this condition each stimulus is thrown in at the height of the contraction due to the preceding stimulus, and so a maximum con- traction is maintained. This permanent contraction is known as complete tetanus, the imperfect fusion with a slower rate being termed incomplete tetanus. The ordinary natural contractions of the skeletal muscles in the body are incomplete tetani ; the rate at which the natural nerve impulses are sent to the muscles being about 12 to 14 per second. A muscle cannot be... maintained in a tetanized condition for any considerable time, because it becomes fatigued and gradually relaxes, although the nerve does not become fatigued and the impulses are still conveyed along it. Even single stimuli repeated at somewhat longer intervals than I'j of a second are sufficient to fatigue a muscle when the stimulation is long continued.
Both cardiac muscle and involuntary muscle have a much longer latent period than voluntary or skeletal muscle. This may be shown, in the case of involuntary muscle, by exposing the intestine in an animal which has just been killed,- and directly stimulating it by pricking with a sharp point.
What to read after Elementary Physiology And Anatomy?
You can find similar books in the "Read Also" column, or choose other free books by Benjamin Moore to read onlineMoreLess
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