Medical Narration
Description
Vocal Characteristics
Language
EnglishVoice Age
Young Adult (18-35)Accents
North American (General) North American (US General American - GenAM)Transcript
Note: Transcripts are generated using speech recognition software and may contain errors.
for investigation of radial contractions. A spiral strip of the tissue has to be prepared for which a short piece of the aorta of about one centimeter is needed. Now. This is the most difficult part of the preparation. Firstly, the tissue needs to be cut carefully in the direction in which the circular muscle fibers are oriented. Special care is needed to avoid damaging the vascular and does helium, which would significantly affect how the vascular smooth muscle reacts to the test stimuli. Even a light brushing of the end of helium can cause irreversible damage. As the spiral preparation is dissected out, it becomes curled and needs then to be stretched out and fixed with pins. Using two forceps, a piece of cotton thread is tied around each end. These threats are used to fix the preparation in the measuring apparatus between the bracket and the force detector. The preparation of the gastric smooth muscle strip is also prepared in a buffered solution and under a microscope