DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT...
-
Upload
darlene-perkins -
Category
Documents
-
view
221 -
download
2
Transcript of DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT...
![Page 1: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/1.jpg)
DIGESTIVE SYSTEMDIGESTIVE SYSTEM
![Page 2: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/2.jpg)
WHAT IS THE JOB OF THE WHAT IS THE JOB OF THE DIGESTIVE SYSTEM?DIGESTIVE SYSTEM?
TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.
![Page 3: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/3.jpg)
WHERE DOES DIGESTION WHERE DOES DIGESTION BEGIN?BEGIN?
THE MOUTH- begins mechanical digestion
![Page 4: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/4.jpg)
HOW IS FOOD MECHANICALLY HOW IS FOOD MECHANICALLY BROKEN DOWN IN THE MOUTH?BROKEN DOWN IN THE MOUTH?
CHEWING WITH YOUR TEETH BREAKS FOOD INTO SMALLER PIECES.
![Page 5: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/5.jpg)
HOW IS FOOD CHEMICALLY HOW IS FOOD CHEMICALLY BROKEN DOWN IN YOUR MOUTH?BROKEN DOWN IN YOUR MOUTH?
BY SALIVA THAT CONTAINS ENZYMESEnzyme called amylase begins to
break down starches
![Page 6: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/6.jpg)
Food moves from the mouth to Food moves from the mouth to the esophagus….the esophagus….
the tube connecting your mouth to your stomach.
![Page 7: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/7.jpg)
THE ESOPHAGUS MOVES THE THE ESOPHAGUS MOVES THE PARTIALLY DIGESTED FOOD TO THE…PARTIALLY DIGESTED FOOD TO THE…
STOMACH- continues mechanical digestion by churning food.
![Page 8: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/8.jpg)
WHAT IS PERISTALSIS?WHAT IS PERISTALSIS?
SMOOTH MUSCLES THAT CONTRACT TO MOVE FOOD DOWN THE ESOPHOGUS
![Page 9: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/9.jpg)
GASTRIC JUICE IS RELEASED INTO THE GASTRIC JUICE IS RELEASED INTO THE STOMACH TO BREAKDOWN FOOD. WHAT IS STOMACH TO BREAKDOWN FOOD. WHAT IS
GASTRIC JUICE?GASTRIC JUICE?
A MIXTURE OF MUCUS, WATER, ENZYMES, & ACIDS
Hydrochloric acid (stomach acid) has a pH of about 1-2. Very acidic!
![Page 10: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/10.jpg)
WHERE DOES THE FOOD GO ONCE WHERE DOES THE FOOD GO ONCE IT LEAVES THE STOMACH?IT LEAVES THE STOMACH?
TO THE SMALL INTESTINE
![Page 11: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/11.jpg)
Intestines have many foldsIntestines have many folds
Folds are called villiThey increase surface area to absorb
nutrients
![Page 12: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/12.jpg)
PANCREATIC ENZYMES WILL PANCREATIC ENZYMES WILL HELP FINISH BREAKING DOWNHELP FINISH BREAKING DOWN
CARBOHYDRATES AND PROTEINS
![Page 13: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/13.jpg)
THE LIVER MAKESTHE LIVER MAKES
BILE- BREAKS DOWN FATS
![Page 14: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/14.jpg)
YOUR DIGESTED FOOD MOVES INTO YOUR BLOOD YOUR DIGESTED FOOD MOVES INTO YOUR BLOOD STREAM. WHERE DOES THE UNDIGESTED FOOD AND STREAM. WHERE DOES THE UNDIGESTED FOOD AND
EXCESS WATER GO?EXCESS WATER GO?
TO THE LARGE INTESTINE
![Page 15: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/15.jpg)
WHAT HAPPENS TO THE WHAT HAPPENS TO THE EXCESS WATER?EXCESS WATER?
IT IS REABSORBED INTO THE BODY THROUGH THE WALLS OF THE LARGE INTESTINE
![Page 16: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/16.jpg)
DIARRHEA OCCURS WHEN…DIARRHEA OCCURS WHEN…
Your large intestine can’t reabsorb excess H2O…
This makes your stool (feces) watery!
![Page 17: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/17.jpg)
WHAT HAPPENS TO THE WHAT HAPPENS TO THE UNDIGESTED FOODUNDIGESTED FOOD
IT IS EXPELLED FROM THE BODY
![Page 18: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/18.jpg)
FOOD NEVER PASSES THROUGH THE FOOD NEVER PASSES THROUGH THE LIVER OR PANCREAS FOR DIGESTION.LIVER OR PANCREAS FOR DIGESTION.
MOUTH ESOPHAGUS STOMACH SMALL INTESTINE LARGE INTESTINE WASTE LEAVES THE BODY.
![Page 19: DIGESTIVE SYSTEM. WHAT IS THE JOB OF THE DIGESTIVE SYSTEM? TO BREAK DOWN FOOD INTO BIOMOLECULES THAT CELLS CAN USE.](https://reader036.fdocuments.us/reader036/viewer/2022062320/56649f575503460f94c7c63b/html5/thumbnails/19.jpg)