. The animans and man; an elementary textbook of zoology and human physiology. THE GARDEN TOAD 21 below this gullet an elevation in which is a perpendicularslit, the glottis. This is the upper end of the laryngotrachealchamber, and the flaps within on either side of the slit arethe vocal cords. Note at the posterior end of the body in the median linean opening. This is the anal opening or anus. Note thegeneral make-up of the toad. How do its arms comparewith our own? How do its fore feet (hands) differ from itshind feet? Note that the body is covered by a tough envel-oping membrane, the skin.
. The animans and man; an elementary textbook of zoology and human physiology. THE GARDEN TOAD 21 below this gullet an elevation in which is a perpendicularslit, the glottis. This is the upper end of the laryngotrachealchamber, and the flaps within on either side of the slit arethe vocal cords. Note at the posterior end of the body in the median linean opening. This is the anal opening or anus. Note thegeneral make-up of the toad. How do its arms comparewith our own? How do its fore feet (hands) differ from itshind feet? Note that the body is covered by a tough envel-oping membrane, the skin. In the skin are many glandswhich by their excretion keep it soft and moist. Internal Structure.—TECHNICAL NOTE.—With a fine pair ofscissors make a longitudinal median cut through the skin of the venterfrom the anal opening to the angle of the lower jaw. Spread the cutedges apart and pin back in the dissecting-pan. Note the complex system of muscles which govern themovements of the tongue. Observe a number of pairs ofmuscles overlying the bones which support the arms. Th
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Keywords: ., bookcentury1900, bookd, booksubjectphysiology, booksubjectzoology
