RT Journal Article SR Electronic T1 Bronchomotor tone and its modification by certain drugs JF Postgraduate Medical Journal JO Postgrad Med J FD The Fellowship of Postgraduate Medicine SP 190 OP 194 DO 10.1136/pgmj.52.606.190 VO 52 IS 606 A1 Kamburoff, P. L. YR 1976 UL http://pmj.bmj.com/content/52/606/190.abstract AB The bronchial smooth muscle is described and its autonomic innervation discussed. The effect of certain physiological substances on the smooth muscle is discussed and also the consequence of blockade of the alpha receptors of the sympathetic nervous system. Indoramin, a powerful alpha blocker is also antihistaminic and this drug has been used therapeutically in the treatment of some asthmatics. Prostaglandin F2 beta has not yet been applied in human subjects.