Labia stretching abuse The girls are subject to familial and social pressure to conform. The early recordings of the results of the practice are perhaps among the Khoisan peoples of southern Africa, where the inner labia were seen to be several centimeters longer than the outer labia. When Captain James Cook reached Cape Town in 1771, towards the end of his first voyage, he acknowledged being "very desirous to determine the great question among natural historians, whether the women of this country have or have not that fleshy flap or apron which has been called the "Sinus pudoris""; eventually a physician described
Sinus rhythm to them; in these cases, the speed of the "sinus rhythm of the atria" and the speed of the ventricular rhythm must be calculated separately. By convention, the term "normal sinus rhythm" is taken to imply that not only are the P waves (reflecting activity of the sinus node itself) normal in morphology, but that all other ECG measurements are also normal. Criteria therefore include: Sinus rhythm A sinus rhythm is any cardiac rhythm in which depolarization of the cardiac muscle begins at the sinus node. It is characterised by the presence of correctly oriented P waves on the electrocardiogram