The _ system aids the digestive system by secreting hormones which regulate how much we eat and how quickly food and nutrients travel through the digestive system.
a) cardiovascular
b) endocrine
c) integumentary
d) nervous
B) endocrine
When you eat a taco, the tortilla, meat, cheese, lettuce, and tomato are broken apart, releasing the nutrients and other food components they contain. This process is called
a) absorption
b) digestion
c) neutralization
d) transit
B) digestion
Which of the following substance is not absorbed by the human body?
a) amino acids
b) fatty acids
c) fiber
d) sugars
C) Fiber
Which of the following is digested before being absorbed?
a) Minerals
b) Protein
c) Vitamins
d) Water
B) Protien
Portions are broken down into ____ whereas fats are digested mostly into ____.
a) amino acids, sugars
b) amino acids, fatty acids
c) fatty acids, sugars
d) glucose, vitamins
B) amino acids, fatty acids
What might occur if the sphincter doesn't close correctly, and some of the contents from the stomach enter into the esophagus?
a) choking
b) constipation
c) heartburn
d) peptic ulcers
C) heartburn
Protein molecules that increase the rate of specific chemical reactions without themselves being changed are?
a) enzymes
b) hormones
c) mucus
A) enzymes
The gastrointestinal tract is part of the endocrine system because it releases ____ , that regulate digestion and the rate at which food moves through the digestive system.
a) enzymes
b) hormones
c) mucus
B) hormones
Bicarbonate neutralizes the acid in chyme, which allows ___ from the pancreas and small intestine to function.
a) capillaries
b) enzymes
c) hormones
d) lacteals
B) enzymes
The movement of food stuff through the _____ favors the growth of microflora
a) large intestine
b) pancreas
c) small intestine
d) stomach
a) large intestine
When the epiglottis doesn't move correctly, it can lead to
a) choking
b) constipation
c) heartburn
d) vomiting
a) choking
Factors that influence transit time include all of the following except the
a) composition of the meal
b) emotional status of the individual
c) use of certain medications
d) all of these influence transit time
d) all of these influence transit time
Tha gastric pits produce each of the following except
a) and inactive form of pepsin
b) hydrochloric acid
c) mucus
d) salivary amylase
d) salivary amylase
Yogurt is a good source of ____, which contain active cultures of beneficial bacteria.
a) fiber
b) prebiotics
c) probiotics
d) vitamin E
c) probiotics
The regulation of stomach motility and secretion
a) does not vary based on the composition of the meal
b) is affected by the food that has not yet reached the stomach
c) is controlled in part by the hormone pepsin
d) is not affected by the material that h
b) is affected by the food that has not yet reached the stomach
A ____ meal stays in the stomach the longest.
a) high carbohydrate
b) high fat
c) high protein
d) low fat
b) high fat
____ neutralizes the acidic chyme as it enters the small intestine
a) bile
b) Bicarbonate
c) Gastrin
d) pepsin
b) bicarbonate
The transport of substances across a cell membrane with the aid of a carrier molecule and the expenditure of energy is
a) active transport
b) facilitated diffusion
c) osmosis
d) simple diffusion
a) active transport
Peter's patches, located in the mucosa of the small intestine, function to:
a) aid nutrients in entering the circulatory system
b) enhance the functioning of digestive processes
c) increase the motility of the gastrointestinal tract
d) prevent harmful org
d) prevent harmful organisms present in the gastrointestinal tract from making us sick
Which of the following is not a function of the lymphatic system?
a) aiding int the absorption of water-soluble substances
b) containing infection-fighting cells
c) Draining fluid that collects in tissues and between cells
d) All of these are functions of
a) aiding in the absorption of water-soluble substances
A helicobacterpylori infection can cause
a) constipation
b) food allergies
c) gallstones
d) peptic ulcers
d) peptic ulcers
___ is a chronic condition in which acidic stomach contents leak into the esophagus, causing pain and damaging the esophagus
a) Constipation
b) GERD
c) Heartburn
d) vomiting
b) Gerd
Jasmine has gallstones and experiences severe pain when she eats. What substance should she avoid to try to reduce the pain she is experiencing?
a) caffeinated coffee
b) french fries
c) fresh fruits and vegetables
d) peppermint and spearmint
b) french fries
The exchange of nutrients and gases occurs across the thin walls of the
a) blood capillaries
b) laeteals
c) pharynx
d) large intestine
a) blood capillaries
As compared to when you are at rest between meals, when you have eaten a meal, a ____ proportion of your blood goes to your digestive system.
a) smaller
b) the same
c) greater
c) greater
T/F Trypsin and chymotrypsin are lipases?
F. They are both protease enzymes
T/F Fiber retains water, thus when adequate fiber and fluids are consumed, feces have a higher water content and are more easily passed
T.
T/F Glucose can be used to make fatty acids
T.
T/F the nutritional composition of a meal affects how long it stays in the stomach
T.
T/F Each villus contains a capillary where fat-soluble nutrients are absorbed
F. Each villus contains a capillary where nutrients except fat soluble ones are absorbed
T/F collectively, the micivilli are referred as the bush border.
T.
T/F food allergies have their origins in the GI tract
T.
T/F Lymph vessels from the intestine drain into the thoracic duct near the heart
T.
T/F Substances absorbed into the lymphatic system do not pass through the liver before entering the general blood circulation
T.
T/F the time it takes food to travel the length of the GI tact is called the transit time
T.
T/F The gastrointestinal tract is a hallow tube that begins at the mouth and ends at the colon
F. The gastrointestinal tract is an organ system that begins at the mouth and ends at the colon
T/F The mucosa has high nutrient requirements and will show signs of nutrient deficiency early
T.
T/F Enzymes are substrate specific , meaning that lipase will only digest lipids
T.
T/F During swallowing, the air passages are blocked by a flap of tissue called the pharynx
F. It is called the epligotis
T/F The majority of absorption occurs in the stomach
F. The majority of absorption occurs in the small intestine
T/F water, minerals, and nitrogen-containing by products of protein digestion are filtered out of the blood by the lungs.
F. They are filtered out of the blood by the kidneys and excreted in the urine.
T/F Cellular respiration uses oxygen to convert glucose, fatty acids, and amino acids into carbon dioxide, water, and ATP
T.
Where is the primary site for absorption of nutrients
the small intestine