. The anatomy and physiology of the human body. Containing the anatomy of the bones, muscles, and joints; and the heart and arteries. ^Sijmi^ ~^^^ V / // f/tftuji (•// I/It f ftt t ,it ft /I, i///,>/-rff\ I J2. ^-t jv^-S^^ Syf-tf/A t>n^ antf; A^t Of RESPIRATION. 9 LiMglottis or valve to defend it; its own contraction is suffi-cient, for when closed you cannot even guess at its place ; be-sides, the jaws force down the air into it, and the long tonguecarries the food over it into the gullet. At (c) is seen theopening of the gullet, which when dilated is as wide as itsjaws ; it looks more
. The anatomy and physiology of the human body. Containing the anatomy of the bones, muscles, and joints; and the heart and arteries. ^Sijmi^ ~^^^ V / // f/tftuji (•// I/It f ftt t ,it ft /I, i///,>/-rff\ I J2. ^-t jv^-S^^ Syf-tf/A t>n^ antf; A^t Of RESPIRATION. 9 LiMglottis or valve to defend it; its own contraction is suffi-cient, for when closed you cannot even guess at its place ; be-sides, the jaws force down the air into it, and the long tonguecarries the food over it into the gullet. At (c) is seen theopening of the gullet, which when dilated is as wide as itsjaws ; it looks more like the stomach opening directly intothe throat; and this great width requires a very strong mus-cle to contract it, and makes a great circle of rugae. At (<f) isseen the most important part of all, the nostril of the Frog,with which it continually breathes, never opening its mouth. Looking carelessly upon this creature, we do not perceivethat it ever breathes, for it lies plunged over the mouth inwater. It is never seen to open its mouth ; there is no motionin its sides like breathing ; in short it does not seem tobreathe; and when it is provoked, (or rather through fear,)though it keeps its mouth clo
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Keywords: ., bookcentury1800, bookdecad, booksubjecthumananatomy, bookyear1822
