What process is capable of increasing both intrathoracic and intraabdominal pressure, thereby facilitating defecation?
A)Relaxation of the internal anal sphincter
B)Intestinal peristalsis
C)Valsalva maneuver
D)Ileogastric reflex

Question

Quizplus · Accepted Answer

The Valsalva maneuver consists of inhaling and forcing the diaphragm and chest muscles against the closed glottis and increases both intrathoracic and intraabdominal pressure. This pressure is transmitted to the rectum thereby facilitating defecation. Relaxation of the internal anal sphincter creates the urge to defecate. Peristalsis moves the products of digestion along in the gastrointestinal tract. The ileogastric reflex inhibits gastric motility when the ileum becomes distended.

What Process Is Capable of Increasing Both Intrathoracic and Intraabdominal