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which large vessel is the first to receive most recently eaten nutritents, transporting them to the liver
after digestion and absorption, which circulatory system carries fat and fat soluble vitamins
it picks up and transports dietary lipids
which of the following is a feature of the lympatic system
it is important for transporting fat soluble nutrients
which of the following is true about the lymphatic system
the ring like muscles that retard or prevent backflow or partially digested food in the gastrointestinal tract are called
controls passage of food through the GI tract
which of the following is a function of sphincter muscles
prevents intestinal contents from backing up into the stomach
what is the function of the pyloric sphincter
a watery mixture of partially digested food released by the stomach into the intestines
which of the following is a description of chyme
what substance helps suspend fat in a watery digestive mixture, making fat more available to digestive enzymes
which of the following, upon digestion, is not normally released directly into the blood stream
these protein based substances enhance digestion by making chemical reactions more likely to happen
enzymes that work in the acidic environment of the stomach cannout work in the basic or alkaline environment of the small intestine and vice versa
which of the following is true about digestive enzymes
absorption of nutrients by intestinal cells occurs by all of the following mechanisms except
the hormone secretin responds to food entering the small intestine and stimulates the pancreas to release
which of the following substances is primarily involved in the emulsification of fat to facilitate its digestion
from an area of higher concentration to one of lower concentration
in passive absorption, nutrients enter the cell
water soluble nutrients are transported through the portal system to the liver
which of the following is true of nutrient transport
eating dietary fiber, appropriate fluid intake, and engaging in physical exercise
constipation can best be prevented by
eating smaller meals that are lower in fat
which of the following is an important dietary recommendation for avoiding heartburn
which of the following are substances in plant foods that are not digested in the stomach or small intestine
they pass into the colon and are fermented by bacteria
what is the fate of disaccharides not digested in the small intestine
maltose is transported through the portal vein to the liver
which of the following is not true of carbohydrate absorption
glycerol and fatty acids
when triglycerides are digested, before being absorbed, they are converted to a mixture of
are reformed into triglycerides
after absorption, long-chain fatty acids and monoglyceride inside intestinal cells
fatty acids of less than 12 carbons eneter the blood and then the liver via the portal vein
which of hte following is true about the fate of fatty acids after their absorption
man whole proteins are absorbed and enter the blood
which of the following is not true about the events during and after absorption of protein digestive breakdown products
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