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Digestive

Study Questions
STUDY
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Another name for the alimentary canal is the gastrointestinal (GI) tract
TRUE
The rhythmic, wavelike propelling mechanism of the alimentary canal is called peristalsis
TRUE
The innermost layer of the serosa is called the parietal peritoneum
FALSE
The lacy apron of the peritoneum that covers the abdominal organs is called the lesser omentum
FALSE
The chief cells produce hydrochloric acid, which activates stomach enzymes
FALSE
The small intestine runs from the pyloric sphincter to the ileocecal valve
TRUE
The first portion of the small intestine is the jejunum
FALSE
Bile enters the duodenum of the small intestine through the pancreatic duct
FALSE
Villi are projections of the mucosa of the stomach
FALSE
The ascending colon is found on the left side of the abdominal cavity.
FALSE
The segment of the colon to which the appendix is attached is the cecum
TRUE
The anal canal has a voluntary sphincter formed by smooth muscle only
FALSE
Small pocketlike sacs within the large intestine that most often are partially contracted are called haustra.
TRUE
The enamel found on teeth is heavily mineralized with calcium salts and comprises the hardest substance within the entire body.
TRUE
The bicuspids are also called wisdom teeth.
FALSE
Pancreatic enzymes are released into the stomach to break down all categories of digestible foods
FALSE
Bile is produced by the liver but stored in the gallbladder.
TRUE
Food within the lumen of the alimentary canal is considered to be outside the body
TRUE
The involuntary phase of swallowing is called the buccal phase
FALSE
Diverticulosis occurs when mucosa become inflamed and protrude through the wall of the small intestine.
FALSE
Enzymes of the microvilli are called brush border enzymes
TRUE
Absence of either bile or pancreatic juice indicates that no fat digestion or absorption is occurring. This can lead to blood-clotting problems because the liver needs vitamin K to make prothrombin
TRUE
Secretin and cholecystokinin influence the release of both pancreatic juice and bile
TRUE
Fats are absorbed by active transport in the small intestine.
FALSE
Mass movements are slow-moving contractile waves that move over large areas of the colon three or four times each day.
TRUE
Sugars and starches are classified as lipids.
FALSE
Anabolism is the process in which larger molecules are built from smaller ones.
TRUE
Fat metabolism can result in acidosis (ketoacidosis)
TRUE
Optimal health of tissues is achieved when HDL and LDL are present in equal amounts within the bloodstream.
FALSE
The body's thermostat, which constantly regulates body temperature, is located within the hypothalamus.
TRUE
Watery stools that result when food residue is rushed through the large intestine before sufficient water has been reabsorbed, causing dehydration and electrolyte imbalance, is called constipation.
FALSE
Proteins
pepsinogens
Lactose
lactase
Starch
amylase
Fat
lipase
Nucleic acids
nuclease
Primary site of water absorption
large intestine
Site where starch digestion begins
mouth
Tube through which food is
esophagus
Site where the beginning of protein digestion occurs
stomach
Site where pancreatic enzymes and bile enter the alimentary canal
duodenum
Site of vitamin K synthesis by bacteria
large intestine
Site of initiation of the defecation reflex
rectum
Glucose and glycogen
carbohydrates
Amino acids
proteins
Coenzymes
vitamins
Calcium, phosphorus, potassium
minerals
Triglycerides
lipids
Fiber
carbohydrates