| RESEARCH PAPER
|Year : 1986 | Volume
| Issue : 3 | Page : 163-167
Autonomic nervous transmission in crop of domestic fowl
SK Garg, BD Garg, SP Verma, RD Rana
1. Adenine nucleotides produced contraction dependent contraction of crop. The order of potency was: ATP> ADP> AMP. The response of ATP was blocked by promethazine, cyproheptadine, caffeine and partially reduced by atropine. Electrical stimulation of the innervating nerves caused a contraction followed by relaxation up to 80 percent.
2. Electrical Stiulation of the innervating nerves caused a constraction followed by relaxation up to 80 percent.
3. The initial contraction was blocked by atropine and the residual contraction was blocked by cyproheptadine. The response was almost completely blocked by promethazine (104 M) but was not altered at all by caffeine (10 M) tolazoline (104 M) or propranolol (104 M)
4. lt is likely that ATP is acting on the release or receptors of histamine or 5-HT.
S K Garg
Source of Support: None, Conflict of Interest: None