This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
The major ejection force in vomiting is provided by 
Select and explain. 
A. Stomach, B. Reverse peristalsis of intestine, C. Diaphragm, D. Abdominal muscles
D: Abdominal muscles
Answer: D: Abdominal muscles 
Explanation: The major ejection force in vomiting is provided by Abdominal muscles.