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Nutrition and Digestion - High School

If you have a deficiency of information about nutrition and digestion, review these terms and fortify your knowledge! You'll learn about the digestive system, metabolism, and a variety of nutrients, including vitamins and minerals. This list will provide plenty of food for thought.
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  1. absorption
    taking nutrients into the body after digestion
  2. alimentary canal
    tubular passage of mucous membrane and muscle extending about 8.3 meters from mouth to anus; functions in digestion and elimination
  3. amino acid
    organic compounds containing an amino group and acid group
  4. amylase
    any of a group of proteins found in saliva and pancreatic juice and parts of plants; help convert starch to sugar
  5. anemia
    a deficiency of red blood cells
  6. ascorbic acid
    a vitamin found in fresh fruits and vegetables
  7. assimilation
    the process of absorbing nutrients into the body
  8. autotroph
    an organism capable of synthesizing its own food
  9. bacteria
    single-celled organisms that can cause disease
  10. basal metabolic rate
    the rate at which heat is produced by an individual in a resting state
  11. beriberi
    avitaminosis caused by lack of thiamine (vitamin B1)
  12. beta-carotene
    an isomer of carotene that is found in dark green and dark yellow fruits and vegetables
  13. bile
    a digestive juice secreted by the liver
  14. body mass index
    a measure of someone's weight in relation to height
  15. calcium
    a white metallic element that burns with a brilliant light
  16. calorie
    unit of heat raising 1 gram of water by 1 degree centigrade
  17. carbohydrate
    an essential component of living cells and source of energy
  18. carotenoid
    any of a class of highly unsaturated yellow to red pigments occurring in plants and animals
  19. celiac disease
    an inability to tolerate wheat protein (gluten)
  20. cellulose
    a polysaccharide that is the chief constituent of all plant tissues and fibers
  21. cholesterol
    a substance in the blood that can cause heart disease
  22. chyme
    a semiliquid mass of partially digested food that passes from the stomach through the pyloric sphincter into the duodenum
  23. colon
    the part of the large intestine between the cecum and rectum
  24. deficiency
    the state of needing something that is absent or unavailable
  25. diabetes
    a disease characterized by high glucose levels in the blood
  26. diet
    the usual food and drink consumed by an organism
  27. digestion
    the process by which the body breaks down food
  28. digestive system
    the system that makes food absorbable into the body
  29. disaccharide
    any of a variety of carbohydrates that yield two monosaccharide molecules on complete hydrolysis
  30. duodenum
    the part of the small intestine between the stomach and the jejunum
  31. eating disorder
    a disorder of the normal eating routine
  32. energy
    any source of usable power
  33. enzyme
    a complex protein produced by cells that acts as a catalyst
  34. fat
    a kind of body tissue that serves as a source of energy
  35. fat-soluble
    soluble in fats
  36. fatty acid
    any of a class of aliphatic monocarboxylic acids that form part of a lipid molecule and can be derived from fat by hydrolysis; fatty acids are simple molecules built around a series of carbon atoms linked together in a chain of 12 to 22 carbon atoms
  37. fiber
    coarse, indigestible plant food low in nutrients
  38. flavonoid
    any of a large class of plant pigments having a chemical structure based on or similar to flavone
  39. folic acid
    a B vitamin that is essential for cell growth and reproduction
  40. fortify
    add nutrients to
  41. fructose
    a simple sugar found in honey and in many ripe fruits
  42. galactose
    a simple sugar found in lactose
  43. gall bladder
    a muscular sac attached to the liver that stores bile (secreted by the liver) until it is needed for digestion
  44. gastric juice
    digestive secretions of the stomach glands consisting chiefly of hydrochloric acid and mucin and the enzymes pepsin and rennin and lipase
  45. glucose
    a monosaccharide sugar that has several forms
  46. glycerol
    a sweet syrupy trihydroxy alcohol obtained by saponification of fats and oils
  47. glycogen
    one form in which body fuel is stored
  48. goiter
    enlarged thyroid gland, often from iodine deficiency
  49. HDL cholesterol
    the cholesterol in high-density lipoproteins
  50. heterotroph
    an organism that cannot make its own food supply
  51. ileum
    the part of the small intestine between the jejunum and the cecum
  52. insulin
    a glucose-regulating hormone produced in the pancreas
  53. iodine
    a nonmetallic element belonging to the halogens
  54. iron
    a heavy ductile magnetic metallic element
  55. jejunum
    the part of the small intestine between the duodenum and the ileum
  56. lactase
    any of a group of enzymes (trade name Lactaid) that hydrolyze lactose to glucose and galactose
  57. lactose
    a sugar that occurs only in milk
  58. large intestine
    beginning with the cecum and ending with the rectum
  59. LDL cholesterol
    the cholesterol in low-density lipoproteins
  60. lecithin
    a yellow phospholipid essential for the metabolism of fats
  61. linoleic acid
    a liquid polyunsaturated fatty acid abundant in plant fats and oils; a fatty acid essential for nutrition; used to make soap
  62. lipase
    an enzyme secreted in the digestive tract that catalyzes the breakdown of fats into individual fatty acids that can be absorbed into the bloodstream
  63. lipid
    oily, insoluble organic compound that's a component of cells
  64. liver
    large and complicated reddish-brown glandular organ located in the upper right portion of the abdominal cavity; secretes bile and functions in metabolism of protein and carbohydrate and fat; synthesizes substances involved in the clotting of the blood; synthesizes vitamin A; detoxifies poisonous substances and breaks down worn-out erythrocytes
  65. lutein
    yellow carotenoid pigments in plants and animal fats and egg yolks
  66. lycopene
    carotenoid that makes tomatoes red
  67. malnutrition
    a state of poor nourishment
  68. maltose
    a crystalline sugar formed during the digestion of starches
  69. metabolism
    the organic processes that are necessary for life
  70. micronutrient
    a substance needed only in small amounts for normal body function (e.g., vitamins or minerals)
  71. mineral
    a solid inorganic substance occurring in nature
  72. monosaccharide
    a sugar that does not hydrolyse to give other sugars
  73. mucus
    protective secretion of membranes lining internal organs
  74. multivitamin
    a pill or tablet containing several vitamins
  75. niacin
    a B vitamin essential for the normal function of the nervous system and the gastrointestinal tract
  76. nutrient
    any substance that can be metabolized to give energy
  77. nutrition
    the organic process of nourishing or being nourished
  78. obesity
    the condition of being excessively overweight
  79. omega-3 fatty acid
    a polyunsaturated fatty acid whose carbon chain has its first double valence bond three carbons from the beginning
  80. omega-6 fatty acid
    a polyunsaturated fatty acid whose carbon chain has its first double valence bond six carbons from the beginning
  81. pancreas
    a large gland that secretes insulin and digestive enzymes
  82. pepsin
    an enzyme produced in the stomach that splits proteins into peptones
  83. peptide
    amide combining the amino group of one amino acid with the carboxyl group of another; usually obtained by partial hydrolysis of protein
  84. peristalsis
    wavelike muscle contractions of the alimentary tract
  85. pharynx
    the passage to the stomach and lungs
  86. phospholipid
    any of various compounds composed of fatty acids and phosphoric acid and a nitrogenous base; an important constituent of membranes
  87. phytochemical
    a chemical substance obtained from plants that is biologically active but not nutritive
  88. polypeptide
    a peptide containing 10 to more than 100 amino acids
  89. polysaccharide
    any of a class of carbohydrates whose molecules contain chains of monosaccharide molecules
  90. potassium
    a light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite
  91. protein
    an organic compound essential to living cells
  92. renin
    a proteolytic enzyme secreted by the kidneys
  93. riboflavin
    a B vitamin that prevents skin lesions and weight loss
  94. saliva
    a clear liquid secreted by glands in the mouth
  95. salivary gland
    any of three pairs of glands in the mouth and digestive system that secrete saliva for digestion
  96. scurvy
    a condition caused by deficiency of ascorbic acid
  97. small intestine
    the longest part of the alimentary canal
  98. sodium
    a silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt)
  99. soluble
    capable of being dissolved in some solvent
  100. starch
    a complex carbohydrate in seeds, fruits, and pith of plants
  101. stomach
    enlarged and muscular saclike organ of the alimentary canal
  102. sucrase
    an enzyme that catalyzes the hydrolysis of sucrose into glucose and fructose
  103. sucrose
    a complex carbohydrate found in many plants and used as a sweetening agent
  104. supplement
    an additional component that improves capability
  105. thiamine
    a B vitamin that prevents beriberi
  106. trace element
    an element that occurs at very small quantities in the body but is nonetheless important for many biological processes
  107. trans fatty acid
    a fatty acid that has been produced by hydrogenating an unsaturated fatty acid (and so changing its shape); found in processed foods such as margarine and fried foods and puddings and commercially baked goods and partially hydrogenated vegetable oils
  108. triglyceride
    glyceride occurring naturally in animal and vegetable tissues; it consists of three individual fatty acids bound together in a single large molecule; an important energy source forming much of the fat stored by the body
  109. trypsin
    an enzyme of pancreatic origin
  110. villus
    a minute hairlike projection on mucous membrane
  111. vitamin
    an organic substance essential to normal metabolism
  112. vitamin A
    any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes
  113. vitamin B
    originally thought to be a single vitamin but now separated into several B vitamins
  114. vitamin C
    a vitamin found in fresh fruits and vegetables
  115. vitamin D
    a fat-soluble vitamin that prevents rickets
  116. vitamin E
    a fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body
  117. vitamin K
    a fat-soluble vitamin that helps in the clotting of blood
  118. water-soluble
    soluble in water
Created on Tue Feb 07 23:22:55 EST 2017 (updated Wed Apr 05 13:24:51 EDT 2017)

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