| A | B |
|---|
| cell | the smallest unit of an organism that can carry out the basic functions of life |
| tissue | a group of similar cells that work together to carry out a specific function. function of muscle tissue is to contract |
| organ | a group of different tissues that work together to perform a specific function. ex. - heart, liver, brain |
| organism | a complete living thing. animal kingdom: humans, dogs, cats plant kingdom: bacteria, fungi |
| body system | a group of organs that work together to perform a specific function. organs of the digestive system process food and prepare it for delivery to the body's cells |
| digestion | mechanical and chemical breakdown of food into small molecules that cells can absorb and use |
| bolus | the ball of food that moves through the digestive tract |
| mucus | a thick, sticky substance that lines and protects the inner walls of the digestive organs. facilitates the passage of food through the digestive tract and helps protect the walls of the digestive tract from being digested |
| peristalsis | regular muscular contractions that move food through the digestive tract |
| mouth | the first organ of the digestive system where mechanical and chemical digestion takes place. the site of carbohydrate digestion |
| esophagus | the tube that carries the bolus from the mouth to the stomach |
| stomach | the organ that grinds and crushes the food into even smaller pieces and continues chemical digestion. The site of fat digestion and partially digests proteins. |
| small intestine | the organ in which most of the chemical digestion takes place. |
| large intestine | continues digesting proteins and releases the left over water and minerals into the bloodstream. |
| rectum | the place at the end of the large intestine in which the feces collects. |
| anus | where feces is expelled out of the body |
