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
All of the following are example of feed forward control system except 
Select and explain. 
A. Temperature regulation, B. BP regulation, C. Cephalic phase of gastric secretion, D. Increased heart rate before start of exercise
B: BP regulation
Answer: B: BP regulation 
Explanation: BP regulation is example of negative feedback control.
Feedforward control :
In this, it anticipates the discharge and prevent the change in 'controlled variable' by generating a corrective command that anticipates the change in 'controlled variable'
Example :

Temperature regulation
Cephalic phase of gastric secretion
Increase in heart rate and respiratory rate even before exercise.
Cerebellar action in motor co-ordination.