Science Biology Crossword

A sphincter muscle at the end of the digestive tract.
A greenish liquid responsible for mechanical digestion of fats.
Food rolled into a ball by the tongue.
The building blocks of all living things.
The process of breaking down food into a usable form.
The system of the body where digestion takes place.
The first part of the small intestine.
The flap of skin in the oesophagus that stops food entering the wind pipe.
A mixture of chemicals produced by cells in the stomach wall.
The final section of the digestive tract.
The largest internal organ, it produces bile.
The part of the digestive system that connects the mouth to the stomach.
A structure that contains at least two different type of tissue that work together to complete a task.
The process of pushing food through the digestive tract by alternating contraction and relaxation of muscles
The longest part of the digestive tract.
A circle of muscle.
A group of cells of the same type that carry out the same job in the body.
Microscopic 'fingers' that greatly increase the surface area of the wall of the small intestine