muscle coat

The fluid is expelled under sympathetic contraction of the muscularis muscle coat.

Contractile activity of the muscle coats of the gut is regulated by myogenic, neural, and humoral factors.

In the remaining two patients the ultrastructural changes in the muscle coats were inconclusive in one case (patient 8) and the histological material was inadequate for diagnosis in the other case (patient 9).

Some women are said to experience pain and cramping at the beginning of their menstruation because of abnormal uterine contractions and a constriction of blood vessels in the myometrium, the smooth muscle coat of the uterus.

Pathological changes either in the neural plexus or in the smooth muscle coats were not evident in routine or cryostat sections, or on histochemical staining, in the seven subjects from whom full thickness bowel samples were available for further analysis.

All three subjects with a tachygastria (patients 1, 2, and 3) had a proven neuropathy of the myenteric plexus whereas three of the five patients with a continuously irregular frequency of the electrical control activity had clear evidence of a myopathy of the muscle coats on ultrastructural studies.