digestive system

Question 1

what does respiration do?

Answer 1

It provides energy for the activity of cells

Question 2

what is the role of the digestive system?

Answer 2

maintaining a human as a functioning multicellular organism. it also breaks down food and absorbs nutrients for energy and growth.

Question 3

why is the digestion of food necessary before absorption can take place?

Answer 3

Food and drink must be changed into smaller molecules of nutrients before they can be absorbed into the blood and carried to cells throughout the body.

Question 4

what is mechanical digestion?

Answer 4

physically breaking down food substances into smaller particles to more efficiently undergo chemical digestion

Question 5

what is chemical digestion?

Answer 5

Chemical digestion uses certain enzymes to break down nutrients, such as carbohydrates, proteins, and fats, into smaller molecules

Question 6

what are all the organs in the digestive system?

Answer 6

mouth, oesophagus,
stomach, small intestine, pancreas, liver, large intestine, rectum and
anus

Question 7

what is the function of the mouth?

Answer 7

Your salivary glands make saliva, a digestive juice, which moistens food so it moves more easily through your esophagus into your stomach.

Question 8

what is the function of the stomach?

Answer 8

holds the food and mixes it with acid and enzymes that continue to break the food down into a liquid or paste

Question 9

what is the function of the oesophagus?

Answer 9

to transport food entering the mouth through the throat and into the stomach.

Question 10

what is the function of the small intestine?

Answer 10

It helps to further digest food coming from the stom

Question 11

what is the function of the pancreas?

Answer 11

The exocrine pancreas produces enzymes that help to digest food, particularly protein.

Question 11

what is the function of the liver?

Answer 11

to make and secrete bile and to process and purify the blood containing newly absorbed nutrients that are coming from the small intestine.

Question 12

what is the function of the large intestine?

Answer 12

absorbing water and electrolytes, producing and absorbing vitamins, and forming and propelling feces toward the rectum for elimination

Question 13

what is the function of the rectum?

Answer 13

The rectum receives stool from the colon, sends signals to the brain if there is stool to be evacuated, and holds stool until evacuation can happen

Question 14

what is the function of the anus?

Answer 14

to detect rectal contents, whether they are liquid, gas or solid, and then control when stool should and shouldn’t be excreted from your body.