Q. An involuntary rhythmic (wave like) contraction occurs when food passes to the oesophagus is called as …
A. Epiglottis
B. Voluntary contraction
C. Peristalsis
D. Ptyalin
Answer: Peristalsis
A. Epiglottis
B. Voluntary contraction
C. Peristalsis
D. Ptyalin
Answer: Peristalsis