29. The following statements concerning the diaphragm are correct except:
Опрос
- a)right crus provides a muscular sling prevents regurgitation of stomach contents into esophagus
- b) On contraction,diaphragm raises intraabdominal pressure and assists in return of venous blood
- c) The level of the diaphragm is higher in the recumbent position than in the standing position
- d) On contraction, the central tendon descends, reducing the intrathoracic pressure
- e)esophagus passes through diaphragm at the level of the eighth thoracic vertebra