1) The main groups of foods are carbohydrates (composed of simple sugars), absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins (composed of amino acids) and fats (made of fatty acids and absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins).
2) The three main groups of foods all contain the chemical elements absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins, hydrogen and oxygen. In addition, proteins contain absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins.
3) A healthy diet must also contain small quantities of absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins and minerals.
4) The breakdown of insoluble molecules of food to soluble molecules by enzymes is called absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins. This process is necessary to enable food to be absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins into the bloodstream.
5) Food in the mouth is absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins by saliva before being moved down the oesophagus by muscular activity called absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins.
6) The wall of the stomach contains longitudinal and absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins muscle whose activities churn food and mix it with mucus, absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins and enzymes secreted by the gastric glands.
7) The small intestine's inner surface area is enormously increased by the presence of finger-like projections called absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins. These absorb digested food.
8) absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins and amino acids pass into the blood transport system and the products of fat digestion pass into the absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins system.
9) The human body gains water in food, drink and water. It loses water in absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins, breath, urine and faeces.
10) The kidneys are the organs of absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins and excretion.
11) absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins is a waste product made from the breakdown of excess amino acids in the mammalian liver. Some absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins must be made every day by the kidneys to remove urea from the bloodstream.
12) Unpurified blood enters a kidney and undergoes absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins in glomeruli. Useful materials are absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins from kidney tubules. Unwanted substances are eliminated in urine.
13) absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins water bony fish gain water continuously from their surroundings. They solve the problem by producing a large volume of dilute urine.
14) absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins water bony fish lose water continuously to their surroundings. They solve the problem by drinking sea water and excreting the excess salt.
15) When the water concentration of blood in the human body decreases, absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins in the hypothalamus respond and trigger an increased release of antidiuretic hormone (ADH) from the absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins.
16) On arriving in the kidneys, absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins makes the tubules and collecting absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins become more absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins. More water is reabsorbed and teh blood's water concentration is returned to normal. The reverse situation occurs when the blood's water concentration increases above its set point. This mechanism is an example of absorbedacidADHcarboncirculardigestionductsfiltrationFreshGlucoseglycerollubricatedlymphaticnegativenitrogenosmoreceptorsosmoregulationperistalsispermeablepituitaryproteinsreabsorbedSaltsweatUreaurinevillivitamins feedback control.