Digestive System


Terms in this set (...)

A j-shaped organ located after the esophagus
An enzyme containing liquid produced by digestive glands
* amilase-breaks down starch
Muscular contractions used by the esophagus to push food into the stomach
Main digestive function of this organ is to produce bile
*emulsifies fats
Wider than its counterpart, this organ is responsible for ABSORBING WATER FROM WASTE PRODUCTS prior to removal
The large intestine
Organ most closely associated with diabetes
* endocrine- glucagon increases insulin decreases
Exocrine- pancreatic juice( amylase, trypsin)
Mouth, pharynx, esophagus, stomach, small intestine, large intestine
GI tract/ alimentary canal
Teeth , tongue, gallbladder, digestive glands(salivary, glands, liver, pancreas)
Accessory digestive organs
To breakdown food into unusable forms for the body, extract nutrients on to be delivered to the parts of the body that needed it
Function of the digestive system
The roof of the mouth is called the
After materials leaves the stomach, it then enteres the
Peristalsis is
A type of muscle contraction
Proteins are digested into... And the absorbed
Amino acids
Emulsification is a type of ... digestion
Mechanical- phisical breakdown
Most nutrients are absorbed through the wall of the
Small intestine
Food undergoes which type of processing in the body?
digestion, absorption and metabolism
... Is an accesory organ of the digestive system
Salivary glands
... Is the main organ in the GI tract
The tissue layer composed of simple columnar epithelium is the...
The tissue layer that generates peristalsis in an organ of the GI tract
Muscularis externa
The outermost tissue layer of the digestive tract is the
Serosa- visceral peritoneum
The tissue layer of the digestive tract that contains dense irregular connective tissue is the
Which structure prevents food and liquid from entering the nasal cavities above the mouth?
Soft palate+ uvula
Enamel is found in the ... Of the mouth
The largest of the salivary glands is the
Parotid gland
which salivary gland contains two ducts that each open on either side of the lingual frenulum
Submandibular gland
Because of its location, the pharynx can be considered part of the
Digestive system and respiratory system
Which of the following is not an example of digestion
A.mastication of food
B. Emulsification of fat by bile
C. Mixing of HCI with bolus to form chyme
D. Both B and C
E. All of the above are examples of mechanical digestion
All of the above are examples of mechanical digestion
The part of the stomach that joins with the small intestines is the
Which of the following structures does NOT help to increase the absorptive surfacearea of the small intestine?
A. Villi
B. Plicae circulares
C. Lacteals
D. Microvilli
E. All of the above help increase surface area
The sequence of sections of the small intestines through which food passes would be
Duodenum, jejunum, ileum
This statement is correct
Cystic duct and hepatic duct join to for mthe common bile duct
The function of the bile is to
Emulsify fat
Enzymes are important in
Chamical digestion
Amylase can be found in the
Salivary glands and pancreas
The most abundant ennd product of carbohydrate digestion is
Maltaseand sucrase are made in the
Small intestines
Protein digestion begins in the
Stomach (pepsin)
* small intesine is where protein and carb digestion end
In the stomach, ...
Hcl converts pepsinogen to pepsin
*found in pancreatic juice
Is important in protein digestion
Protein digestion ...
Enend products are amino acids
Involves peptidase in the small intestine
Emulsifies fat
Is synthesized in the liver
Is released into duodenum
Is stored in the gallbladder
Is synthesized in the pancreas
The mmovement of digested food from the digested food from the digestive system into the bloodstream is called....
Which of the following processes in NOT considered an example of mechanical digestion
A. Teeth chewing food
B. Stomach churning food
C. Amylase acting on food in the mouth
D. Bile acting on fats in the small intestines
Amylase acting on food in the mouth
The tissue layers of the digestive tract from thee inside (lumen) to the outside are...
Mucosa, submucosa, muscularis externa, serosa
Canine teeth are sometimes called
The tube which drains bile from liver is the
Hepatic duct
The tube which drains bile fro gallbladder is the
Cystic duct
... Is absorbed by the large intestine
B. Submucosa
A. Uvula
B. Soft palate
C. hard palate
D. Palatine tonsils
F. Lingual tonsils
A. Ducts of sublingual gland
B. sublingulal gland
C.parotid gland
D. parotid duct
E. submandibular duct
F.submandubular gland
B. canine
C. premolar (bicuspid)
D. molar
B. Neck
C. Root
D. Enamel
E. Dentin
F. Pulp cavity
A. Circular folds
B. Villi
C. Lacteal
D. Blood capillaries
E. Macrovilli
A.pancreatic islet
B. Chief
C. Parietal
D. Kupffer
A. Mechanical digestion
B. absorbption
C. Ingestion
D. Defecation
E. Chemical digestion
A. In direct contact with ingested food
B. Same structure as the visceral peritoneum
C. Areolar connective tissue with many elastic fibers
D. Composed of longitudinal and circular layers of smooth muscle
B. Submandibular gland
C. Parotid gland
D. Secures the tongue to the floor of the oral cavity
A.gastroesophageal sphincter
B. body
C. Pyloric sphincter
D. Rugae
A. Lipids
B. Unclaimed acids
C. Proteins
D carbohydrates
A. Salivary amilypse
B. Bile
A. Cementum
Wavelike smoothe muscle contractions that move foodstuffs through the alimentary tube
Chemical or mechanical process of breaking down foodstuffs to substances that can be absorbed
Enzymatic breakdown of any type of food molecule
Process by which the products of digestion pass through the lumen of the gastrointestinal tract into thr blood or lymph
Produces enzymes that breakdown al categories of foodstuffs D
Increases surface area for absorbtipn via villi and macrovilli B
Only digestive structure with three muscle layers main function is to filter and process the nutrient-rich blood delevered to it C
Produces intrinsic factor
Produces a mucoid barrier
Food is contained in the gastrointestinal tract from the time of ingestion until it is commpletely digested and the waste prepared for elimination
As food passes through the digestive tract, it becomes less complex and the nutrients are more readily available to the body
Some of the microbes that often invade other organs of the body are rarely found in the stomach. The reason for thi is the presence of pepsin.
F, not pepsin, HCI
All the chemical and mechanical phases of digestion from the mouth to through the small intestine are directed toward changing food into forms that can pass through the epithelial cells lining the mucosa into the underlying blood and lymphatic vessels
The main chemical activity of the mouth is to begin the digestion of proteins
F, not proteins, carbs
The last teeth to appear are the deciduous teeth
F, Not deciduous; permanent
The digestive function of the gallbladder is to produce bile
F, not produce;store
The pancreas has both an endocrine and exocrine function
The chemical and mechanical process of food breakdown are called
When we ingest large molecules such as lipids, carbohydrates and proteins, hey must undergo catabolic reactions whereby enzymes split these molecules. This searies of reactions is called
Chemical digestion
The sheets of peritoneal membrane that hold the digestive tract in place are called
Chyme is created in the
Bonus+ HCI created in STOMACH
Pepsinogen, a digestive enzyme, is secreted by the
Chief cells of the stomach
You have just eaten a meal high in complex carbohydrates, which of the following enzymes will help you digest the meal
The enzymic breakdown of any type of food molecule is called
Parietal cells of the stomach produce
HCl+intrinsic factor
Which vitamin requires intrinsic factor in order to be absorbed?
The terminal portion of the small intestine is known as the
The dental formila for an adult is 2-1-2-3, what does the 1 stand for
Surgical cutting of the lingual frenulum would occur on which part of the body
On the tongue
A fluid secreated into the small intestine during digestion that contains emulsification agents is
You have just eaten french fries, buttered toast, bacon, ice cream and whole milk. Which organ would be active in helping you digest this food?
Peristalsis is part of which digestive process?
All of the following are part of the alimentary canal
Pharynx, esophagus, small intestine
Simple columnar epithelium is found in which histology cal layer of the alimentary canal
Which histology all layer of the alimentary canal is also known as the visceral peritoneum
The membrane that lines the body wall of the abdominal cavity is the
Parietal peritoneum
The teeth used to tear and pierce food are the
The gastric cells that secrete pepsinogen are the
Chief cells
The most important digestive enzymes are secreted by this accessory organ
The fingerlike projections of the intestinal mucosa are called
This substance secreted by the pancreas helps neutralize chyme
Sodium bicarbinate
Which of the following is not part of the large intestine
The function of the large intestine include all of the following
Elimination of waste
Absorption of water
Amylase allows us to digest
Trypsin, lipase, pepsin
Which enzyme below digests disaccharides into monosaccharides
Intrinsic factor is produced in the stomach and is necessary for the absorption of
Vitamin B12
Transverse colon
Decending colon
Ascending colon