digestion, absorption, and metabolism Flashcards
absorption
the passage of nutrients into the blood or lymphatic system
adipose tissue
fat tissue
aerobic metabolism
combining nutrients with oxygen within the cell (oxidation)
basal metabolism rate (BMR)
the amount of calories (energy) your body requires to perform involuntary functions
bile
made by the liver and stored in the gallbladder
bile helps digest fats
bolus
chewed up chunk of food (food in the mouth ready to be swallowed)
bomb calorimeter
machine that measures the amount of energy in food
calorie
the amount of energy in food (kcal)
capillaries
tiny blood vessels connecting veins and arteries
cardiac sphincter
muscle at the base of the esophagus
prevents acid reflux from going into the esophagus
catabolism
the breakdown of compounds during metabolism
catalyst
a substance that causes another substance to react
chemical digestion
chemical changing of food during digestion
caused by hydrolysis
cholecystokinin (CCK)
hormone that triggers the gallbladder to release stored bile
chyme (kime)
food mass mixed with juices
colon
large intestine
responsible for absolving excess water from digested food
digestion
the breakdown of food in the body to prepare it for absorption
duodenum
first part of the small intestine
energy balance
eating the same amount of calories that your body needs
energy requirement
the number of calories your body needs in a 24h period
enzymes
protein causing chemical reaction