The Electrical Potential Profile of the Isolated Toad Bladder
نویسندگان
چکیده
منابع مشابه
The Electrical Potential Profile of the Isolated Toad Bladder
The electrical potential profile of the isolated toad bladder was examined in the spontaneously active, chronically short-circuited, and intermittently short-circuited states by means of glass micropipettes. The position of the micropipette tip within the bladder was evaluated by measuring the D.C. resistance between the micropipette tip and the reference electrode on the serosal side of the bl...
متن کاملElectrical Potential Profile of the Toad Skin Epithelium
The electrical potential profile of the isolated toad skin was recorded, in vitro, by impalement with micropipette-electrodes, when both sides of the skin were bathed with sulfate-Ringer. The outer side of the skin was some 110 mv negative with respect to the inner side. Upon impalement from the outer side, two main positive steps of 40 to 70 mv each were found to form the skin potential. The s...
متن کاملElectrical Excitability of Isolated Frog Skin and Toad Bladder
When current of proper polarity and sufficient intensity is passed across isolated frog skin or toad bladder, an action potential of about 200 mv and 10 msec. duration with a sharp threshold and refractory period of several seconds' duration is elicited. Interruption of current during the action potential abolishes the response, and, as shown by appropriate bridge measurements, this occurs beca...
متن کاملIsolated Epithelial Cells of the Toad Bladder
Epithelial cells of the toad bladder were disaggregated with EDTA, trypsin, hyaluronidase, or collagenase and were then scraped free of the underlying connective tissue. In most experiments EDTA was complexed with a divalent cation before the tissue was scraped. Q(OO2), sucrose and inulin spaces, and electrolytes of the isolated cells were measured. Cells disaggregated by collagenase or hyaluro...
متن کاملElectrical potential profile of the isolated frog cornea.
With the use of glass microelectrodes the electrical potential profile was determined in the isolated cornea of the frog, Rana catesbiana. The results indicate that the stroma of the cornea is ahvays negative (up to -32 mo.) with respect to both endothelial and epithelial bathing solutions. A model was developed that excluded the epithelium as the location of a previously described chloride pum...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1962
ISSN: 1540-7748,0022-1295
DOI: 10.1085/jgp.45.3.515