Activity of Gastrointestinal Smooth Muscle Worksheet

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Activity of Gastrointestinal Smooth Muscle Worksheet

Activity of Gastrointestinal Smooth Muscle: Worksheet

Please Ensure That You Have Completed The Calculations In Tables 1-3 Before You Answer The Worksheet Questions

Table 1. The effects of phentolamine and atropine on the contractile response to nerve stimulation (20 Hz) in the isolated rabbit ileum

| |Contraction amplitude |Contraction amplitude with the |Effect of nerve stimulation on the contraction amplitude |
| |pre-nerve stimulation |maximum response to nerve | |
| | |stimulation |PLEASE SHOW YOUR CALCULATIONS |
| |Maximum – Minimum |Maximum – Minimum |Express the effect of nerve stimulation as % change (from |
| |= 3.75 mV |= 2.00 mV |pre-nerve stimulation to maximum response to nerve |
| | | |stimulation): |
| | | | |
| | | |= 53.3 % |
|with phentolamine |Maximum – Minimum |Maximum – Minimum |Express the effect of nerve stimulation as % change (from |
| |= 4.40 mV |= 2.35 mV |pre-nerve stimulation to maximum response to nerve |
| | | |stimulation): |
| | |

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