Download Excretory System

STANDARDS
• [SC.6.L.14.5] HUMAN BODY SYSTEMS
• IDENTIFY AND INVESTIGATE THE GENERAL FUNCTIONS OF THE MAJOR SYSTEMS OF THE HUMAN BODY
• PRIOR KNOWLEDGE—[SC.6.L.14.1 AND SC.5.L.14.2]
OBJECTIVES
• STUDENTS WILL IDENTIFY AND DESCRIBE THE GENERAL FUNCTIONS OF THE DIGESTIVE AND EXCRETORY
SYSTEMS.
• STUDENTS WILL IDENTIFY AND DESCRIBE HOW THE MAJOR SYSTEMS OF THE HUMAN BODY INTERACT TO
MAINTAIN HOMEOSTASIS.
EXCRETORY SYSTEM VOCABULARY
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EXCRETORY SYSTEM--THE EXCRETORY SYSTEM IS A SYSTEM THAT REMOVES EXCESS, UNNECESSARY MATERIALS FROM THE
BODY FLUIDS OF AN ORGANISM, SO AS TO HELP MAINTAIN INTERNAL CHEMICAL HOMEOSTASIS AND PREVENT DAMAGE TO
THE BODY
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INTESTINES--THE LOWER PART OF THE ALIMENTARY CANAL FROM THE END OF THE STOMACH TO THE ANUS
LIVER--GLANDULAR ORGAN IN THE ABDOMEN OF VERTEBRATES, INVOLVED IN MANY METABOLIC PROCESSES
NUTRIENT--SUBSTANCE THAT PROVIDES NOURISHMENT ESSENTIAL FOR GROWTH AND THE MAINTENANCE OF LIFE
PANCREAS--GLAND BEHIND THE STOMACH THAT SECRETES DIGESTIVE ENZYMES INTO THE DUODENUM.
STOMACH--MAJOR PART OF THE DIGESTION OF FOOD OCCURS, BEING A PEAR-SHAPED ENLARGEMENT OF THE ALIMENTARY
CANAL LINKING THE ESOPHAGUS TO THE SMALL INTESTINE.
ESSENTIAL QUESTION
• HOW DO THE DIGESTIVE AND EXCRETORY SYSTEMS WORK TOGETHER TO MAINTAIN HOMEOSTASIS??
• THE DIGESTIVE SYSTEM BREAKS DOWN THE NUTRIENTS TO A LEVEL THAT THE CELLS CAN USE. THIS PROCESS
ALSO PRODUCES WASTE, WHICH THE EXCRETORY SYSTEM REMOVES FROM THE BODY.
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THE EXCRETORY SYSTEM HELPS THE
DIGESTIVE SYSTEM BY GETTING RID OF
WASTE. THE DIGESTIVE SYSTEM HELPS THE
EXCRETORY SYSTEM BY BREAKING DOWN
FOOD TO BE ELIMINATED FROM THE BODY.
WITHOUT THE EXCRETORY SYSTEM THINGS
WOULD NOT BE ABLE TO BE FLUSHED OUT.
DID YOU KNOW—EACH DAY, THE KIDNEYS
PROCESS AND FILTER GALLONS OF BLOOD
THROUGH MORE THAN TWO MILLION
NEPHRONS. THE FILTERING ABILITY OF THE
NEPHRONS ENABLES AROUND 99 PERCENT
OF BLOOD TO BE RECYCLED BY THE BODY.
HOW MUCH HAVE YOU LEARNED ABOUT THE
EXCRETORY SYSTEM????
• WHAT IS THE MOST IMPORTANT ORGAN IN THE EXCRETORY SYSTEM?
a) KIDNEY
b) LIVER
c) BLADDER
• WHAT ARE THE MICROSCOPIC FILTERS WITHIN THE KIDNEYS CALLED?
a) NEURONS
b) URETER
c) NEPHRONS
• URINE CONTAINS MAINLY WATER AND…
a) AMMONIA
b) UREA
c) MOUNTAIN DEW
STANDARDS
• [SC.6.L.14.5] HUMAN BODY SYSTEMS
• IDENTIFY AND INVESTIGATE THE GENERAL FUNCTIONS OF THE MAJOR SYSTEMS OF THE HUMAN BODY
• PRIOR KNOWLEDGE—[SC.6.L.14.1 AND SC.5.L.14.2]
OBJECTIVES
• STUDENTS WILL IDENTIFY AND DESCRIBE THE GENERAL FUNCTIONS OF THE DIGESTIVE AND EXCRETORY
SYSTEMS.
• STUDENTS WILL IDENTIFY AND DESCRIBE HOW THE MAJOR SYSTEMS OF THE HUMAN BODY INTERACT TO
MAINTAIN HOMEOSTASIS.
DIGESTIVE VOCABULARY
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MECHANICAL DIGESTION- BREAKING, CRUSHING, MASHING FOOD.
CHEMICAL DIGESTIONS- LARGE MOLECULES OF FOOD ARE BROKEN SOWN INTO SMALLER ONES + GO INTO THE BLOODSTREAMS.
MOUTH- CHEWS FOOD WITH SALIVA, WHICH HELPS START CHEMICAL DIGESTION OF FOOD.
ESOPHAGUS- A LONG TUB THAT MOVES FOOD FROM THE THROAT TO THE STOMACH.
STOMACH – A MUSCULAR BAG THAT CRUSHES FOOD AND CONTAINS ACIDS AND ENZYMES FOR BREAKING DOWN PROTEINS AND KILLING BACTERIA.
SMALL INTESTINE – WHERE MOST CHEMICAL DIGESTION HAPPENS AND THE MOST NUTRIENTS ARE ABSORBED.
PANCREAS – MAKES FLUIDS THAT BREAKDOWN PROTEINS, CARBOHYDRATES, FATS AND NUCLEIC ACID.
LIVER – MAKES AND RELEASES A MIXTURE CALLED BILE, THAT IS THEN STORED IN THE GALL BLADDER.
LARGE INTESTINE – REMOVES WATER FROM MOSTLY DIGESTED FOOD, ABSORBS VITAMINS AND TURNS FOOD INTO MOSTLY SOLID WASTE, CALLED
FECES (POOP).
ESSENTIAL QUESTION
• HOW DO THE DIGESTIVE AND EXCRETORY SYSTEMS WORK TOGETHER TO MAINTAIN HOMEOSTASIS??
• THE DIGESTIVE SYSTEM BREAKS DOWN THE NUTRIENTS TO A LEVEL THAT THE CELLS CAN USE. THIS PROCESS
ALSO PRODUCES WASTE, WHICH THE EXCRETORY SYSTEM REMOVES FROM THE BODY.
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THE DIGESTIVE SYSTEM IS THE GROUP OF ORGANS THAT
CHANGES FOOD INTO A FORM THAT CAN BE USED BY THE
BODIES CELLS.
THE SYSTEM IS ALSO KNOW AS THE GASTROINTESTINAL
TRACK OR SYSTEM.
THE DIGESTIVE PROCESS CAN BE DIVIDED INTO FOUR
PLACES.
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INGESTION – FOOD IS DEVOURED
DIGESTION – DONE BY ALL THE ORGANS OF THE DIGESTIVE
TRACK
ABSORPTION – THE SMALL INTESTINE
ELIMINATION – THE LARGE INTESTINE, COLON, AND RECTUM
DID YOU KNOW—THE STOMACH PRODUCES A THICK
MUCUS TO PROTECT IT FROM ITS OWN ACIDS. THE
STOMACHS ACID IS STRONG ENOUGH TO DISSOLVE A
NAIL.
HOW MUCH HAVE YOU LEARNED ABOUT THE
DIGESTIVE SYSTEM????
• WHAT IS THE TUBE CONNECTION YOUR MOUTH TO YOUR STOMACH?
a) TRACHEA
b) ESOPHAGUS
c) SMALL INTESTINE
• TRUE OR FALSE: ONE PURPOSE OF THE STOMACH IS TO STORE FOOD?
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TRUE OR FALSE: YOUR BODY ABSORBS MANY NUTRIENTS FROM THE SMALL INTESTINE.
• THE FUNCTION OF THE DIGESTIVE SYSTEM IS TO
a) BREAK DOWN AND ABSORB NUTRIENTS
b) SUPPORT SOFT TISSUE AND PROTECT ORGANS
c) CONTROL ACTIVITIES THROUGH ELECTRICAL IMPULSES