Answer :

a) The food passes down from the mouth to the stomach via oesophagus. The food is in the form of slippery mass combined with saliva, called bolus.

b) The food pipe walls are made up of two different types of muscles- inner layer consists of circular muscles, while the outer layer consists of longitudinal muscles.


c) Contraction of the inner circular muscles results in narrowing of the oesophagus just behind the bolus, so it is squeezed forward in the food pipe.


d) While, the contraction of longitudinal muscles in front of the bolus widen the tube, resulting in shortening of that part of the food pipe.


e) These rhythmic contractions and relaxations bring in a wave like motion that propels the food bolus into the stomach by the action called peristalsis.


f) Peristalsis brings about the motion of the food all through the alimentary canal with the help of action of different types of muscles involved.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Transportation in One ShotTransportation in One ShotTransportation in One Shot42 mins
Human Reproduction in One ShotHuman Reproduction in One ShotHuman Reproduction in One Shot45 mins
Command on Chemical EquationCommand on Chemical EquationCommand on Chemical Equation57 mins
Mastering Chemical Reaction - 1Mastering Chemical Reaction - 1Mastering Chemical Reaction - 161 mins
Mastering Chemical Reaction - 2Mastering Chemical Reaction - 2Mastering Chemical Reaction - 261 mins
How to Revise ChemistryHow to Revise ChemistryHow to Revise Chemistry45 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

<span lang="EN-USAP - Biology

<span lang="EN-USAP - Biology

<span lang="EN-USAP - Biology

<span lang="EN-USAP - Biology

<span lang="EN-USAP - Biology

<span lang="EN-USAP - Biology

<span lang="EN-USAP - Biology

<span lang="EN-USAP - Biology

<span lang="EN-USAP - Biology

<span lang="EN-USAP - Biology