Digestive System Flashcards
Digestive system starts with
Oral cavity
Digestive system ends with
Anal canal
What are the processes of providing nutrients needed for cells by the digestive system?
Ingestion
Digestion
Absorption
Excretion
Ingestion
Intake of food
Digestion
Mechanical and chemical breakdown of food.
Absorbtion
Process of extracting nutrients
Elimination
Excretion of any waste products.
Other names for digestive system
Gastrointestinal tract (GI) Alimentary canal
2 Main parts of the digestive system
Stomach
Intestines
Alimentary canal refers to
Tubelike nature of the digestive system which starts at the mouth and ends at the anus
The digestive system passes through
Thoracic cavity in the mediastinum
Diaphragm in the abdominopelvic cavity
Four coats of the alimentary canal
Mucosa (most inner)
Submucosa
Muscularis
Serosa (most outer)
Aliment/o
Nutrition
Mucosa purposes:
Secretes gastric juices.
Absorbs nutrients.
Protects the tissues by producing mucus.
Mucus
Thick slimy emissions
The inner tunic is lined with :
How many layers? What kind? What are they attached to?
1 layer
Epithelial tissue
That is attached to lamina propria
Lamina propria
Plate like Layer of connective tissues that is attached to the mucosa
Tunic
Layer
Submucosa holds
Blood
Lymphatic and nervous tissues
Submucosa purpose
Nourish
Protect
Communicate
Muscularis consists of?
How many layers? Of what?
2 layers of circular and longitudinal muscles
Peristalsis
When the circular and longitudinal muscles in the muscularis contract and relax in a wavelike movement
Outermost tunic name depends on?
Whether it’s within or outside the peritoneal cavity
Adventitia (tunica exerta)
Outer tunic is outside peritoneal cavity
Tunica externa purpose
Binds the structure together and
Serosa
Tunic is within peritoneal cavity
Serosa purpose
Emit a slippery fluid to counteract friction
Mucosa also contains some
Muscularis mucosa
The digestive function of oral cavity is
Break down food by mastication
Lubricate food to make deglutition easier
Mastication
Chewing
Deglutition
Swallowing
Lips
The beginning of the oral cavity, 2 fleshy structures surrounding it’s opening
Labium superioris
Upper lip
Labium inferiors
Lower lip
Cheeks are covered by … on the outside and …. on the inside and ….. in between
Skin
Mucous membrane
Muscles, fat, nerves, glands
What are the glands that secrete mucus in oral cavity
Buccal
Molar
Palatine
Labial
Buccal glands are located
Throughout inner cheek wall
Molar cheeks are located
On the cheeks near back teeth
Tongue
Muscular organ in oral cavity responsible for tasting, chewing, swallowing and speaking
The tongue is attached in the. Front To the floor of the mouth by the….
Frenulum lingua
Frenulum lingua
Small fold of tissue under the tongue that attaches it to the floor of the mouth.
Tongue is attached in the back to the
Hyoid bone
Tongue is coated in …. membrane
Mucous
Papillae
Thousands of tiny projections studded in the mucous membrane covering the tongue
Where are taste buds
Between the papillae
What are tastebuds
Nerve like cells with receptors for the 5 known tastes
5 known tastes
Sweet Salty Bitter Sour Savory(umami)
Tonsil
Lymphatic tissue located at the base of tongue that serves a protective function
What are tonsils protecting against
Pathogens attempting to enter via the mouth
The posterior of the mouth roof is
Soft palate
Anterior of mouth roof is
Hard palate
Uvula
Tag of flesh hanging Down from the medial surface of the soft palate
Uvula purpose
Production of speech and the initiation of the gag reflex
Maxilla
Upper jaw
Mandible
Lower jaw
Gingivae
Fleshy gums
There are 32 teeth set in the gingivae of the
Alveolar ridges of each bone
Saliva purpose
Moistens the oral cavity and aids in chewing and swallowing
Saliva begins the chemical digestive process by initiating
The digestion of starches
There are … pairs of salivary glands named after….
3
Their location
Parotid gland is located
Near the ear
Submandibular gland is located
Under the lower jaw
Sublingual gland is located
Under the tongue
Maxill/o
Upper jaw
Mandibul/o
Lower jaw
Dent/i
Teeth
Odont/o
Teeth
Gingiv/o
Gums
Bi
Two
Pre
Before
Periodental تحليل كلمي
Peri: surrounding
Odont/o: teeth
Al: pertaining to
Sialoaden/o
Salivary gland
Sial/o
Ptyal/o
Saliva
Pharynx
Throat
Passageway that connects the oral and nasal
The pharynx is divided to
3
Nasopharynx
Oropharynx
Hypopharynx
Nasopharynx is located
Behind nasal cavity
The most superior part of the pharynx is
Nasopharynx
Oropharynx is located
Directly adjacent to the oral cavity
Hypopharynx another name is … and why
Laryngopharynx
Because it’s proximity to the larynx
Larynx
Voice box
Parotid تحليل
Par: near
Ot/o: ear
Id: pertaining to
Submandibular
Sub: under
Mandibul/o: low jaw
Ar: pertaining to
Sublingual
Sub: under
Lingu/o: tongue
Al: pertaining to
Pharyng/o
Pharynx
Nasopharynx
Nas/o: nose
Pharyng/o: pharynx
Oropharynx
Or/o: mouth
Pharyng/o: pharynx
Hypopharynx
Hypo: below
Pharyng/o: pharynx (throat)
Laryngopharynx
Laryng/o: larynx حنجرة
Pharyng/o: pharynx
Esophagus
بلعوم
Muscular, mucus lined, 12-inch tube that extends from the throat to the stomach and carries a bolus from the Oral cavity to the stomach by peristalsis
Bonus
Masticated lump of food
Peristalsis
Wave like muscle contractions that move food through the digestive track
The glands in the lining of esophagus produces ? And what is it’s function
Mucus
Lubricate bolus and ease it’s passage
The muscle that must relax before the food enters the stomach is called?
Lower esophagus sphincter OR cardiac sphincter OR gastroesophageal sphincter
Why is it called the cardiac sphincter?
Because it’s proximal to the heart
Sphincter
Ring like muscles that appear throughout the digestive system and other systems as well. These muscles could move voluntary and non voluntary.
Peritoneum
Double sided membrane that holds many of the organs in the abdominopelvic cavity
Parietal peritoneum
The outer side of membrane near the body wall
Visceral membrane
Inner side of membrane near the organs
Visceral peritoneum
Inner side of membrane near the organs and it is the serosal layer that coats the abdominopelvic viscera with it’s serous fluid facilitating movement between organs.
Ascites
Abnormal accumulation of peritoneal fluid in the Abdominopelvic cavity.
Organs that lie in the retroperotoneum (behind the peritoneum) are
5
Pancreas Aorta Kidneys Ureters Duodenum
Structures that help intraperitoneal organs with support and supplying are
Mesenteries
Ligaments
Folds
Mesenteries
Extensions of the visceral peritoneum that stretch out to hold many of the abdominal organs and they serve as channels for blood vessels, nerves, lymphatic vessels travelling to and from organs.
Mesocolon
Mesoappendix
Mesenteries that surround the colon
Mesenteries that surround the appendix
Ligaments and folds purpose
Provide support and attach one structure to another
Omentum
curtain of fatty tissue that hangs down from the stomach and liver and wraps around the intestines
Stomach
Expandable sac like vessel located between the esophagus and intestines
How does the stomach begin digestion
By storing swallowed food and mixing it with gastric juices and hydrochloric acid to further digestion chemicaly
Chyme
Partly digested food mixed with gastric juices and hydrochloric acids
The smooth muscles in the stomach contract to …
Aid in the mechanical digestion of food
Why is there a mucus coating on the stomach walls
To protect the stomach and other parts of the digestive system from the acidic nature of gastric juices
Three main parts of stomach
Fundus
Body (corporis)
Pylorus (gastric antrum)
Antrum
Cavity or chamber
Fundus
Area of stomach that abuts the diaphragm. This area doesn’t have any acid producing cells
Body, corporis
Central part of the stomach
Plural of pylorus
Pylori
Pylorus
Distal part of the stomach where small intestines begin
Pylorus is divided into
Pyloric antrum
Pyloric canal
Pyloric sphincter
Pyloric sphincter function
Regulates the gentle release of food from the stomach into the small intestine
Cardia is
The portion of stomach that surrounds the esophagogastric connection
Ruga (pl:rugae)
Ridges lining the stomach when it’s empty
Fund/o
Fundus
Corpor/o
Body
Pylor/o
Pylorus
Antr/o
Antrum
The first part of the small intestine is
Duodenum
The small intestine is ….. long and it gets it’s name because of ……..
20 ft (6.5 m) The Diameter of it’s lumen
Lumen
Tubular cavity within the body
First, second and distal parts of small intestine
Duodenum
Jejunum
Ileum
Duodenojejunal flexure
Border between the 2 first sections of the small intestine
Enter/o
Small intestine
Duoden/o
Duodenum
Lumin/o
Lumen
Jejun/o
Jejunum
Ile/o
Ileum
Large intestine is … ft long
5
Primary function of large intestine
Is the elimination of waste products from the body.
The large intestine isn’t well suited for absorbing nutrients because it has no …
Villi
Ilocecal valve
Exit from small intestine and the entrance of the colon
Colon
Large intestine
The cecum has a worm like appendage called
Vermiform appendix
Plural of appendix
Appendices
What could possibly be the function of the vermiform appendix
Immunologic defense mechanism
Whatever has not been absorbed by the small intestine and moves on to the colon is called
Feces
Teniae coli
Muscular bands that contract lengthwise and form the haustra
Haustra
Bulges in the colon
Rectum
Last straight part of the large intestine
Anorectal junction
The junction of the rectum and the anus
The place where feces are held until released from the body completely
Anorectal junction
Defecation/bowel movement/BM
Process of releasing feces from the body
External sphincters are …… while internal sphincters are ……
Voluntary
Involuntary
The first part of large intestine is
Cecum
The colon parts in order
Ascending colon
Transverse colon
Descending colon
Sigmoid colon (s shaped)
The flexure between ascending colon and transverse colon is
Hepatic flexure
Flexure between the transverse colon and descending colon is
Splenic flexure
Col/o , colon/o
Colon
Ilocecal
Terminology
Ile/o: ileum
Cec/o: cecum
Al: pertaining to
Append/o , appendic/o
Appendix
Fec/a
Feces
Sigmoid/o
Sigmoid colon
Rect/o
Rectum
An/o
Anus
Proct/o
Rectum and anus
Accessory organs of the GI are 3
Gallbladder
Liver
Pancreas
Adnexa
Accessory structure
Bile
Substance formed by the liver. That emulsifies (mechanically breakdown) fats into smaller particles so that they can be chemically digested
Bile is made from
Bilirubin
Cholesterol
What is bilirubin
The waste product formed by the normal breakdown of hemoglobin in red blood cells at the end of their life span
Cholesterol
Fatty substance found only in animal tissue
Liver location and how many lobes does it contain
4 lobes
The right upper quadrant of the abdomen and extend partially into the upper left quadrant
Under the diaphragm
Hepatic duct consists of
Right and left hepatic ducts that merge
Cystic duct function
Carries bile to and from the gallbladder
Common bile duct
When the hepatic duct and cystic duct merge and it empties in the duodenum
All these ducts are termed
Bile ducts
Galbladder
Small sac found on the underside of the right lobe of the liver
Bile is stored in
Gallbladder
Hormone secreted when fatty food enter the duodenum
Cholecystokinin
What does Cholecystokinin do
Contracts the gallbladder to move bile out into the cystic duct into the common bile duct and finally into the duodenum
Pancreas
Gland located in the upper left quadrant and it’s involved in digesting carbohydrates, proteins, and lipids
Pancreatic ducts
Carry pancreatic enzymes and empties in the common bile duct.
Pancreas involvement in food is (endocrine/exocrine) and why
Exocrine because the secretion is into a duct
Adnex/o
Accessory
Lob/o
Lobe
Bil/i, chol/e
Bile
Cholesterol/o
Cholesterol
Choledoch/o
Common bile ducts
Cholangi/o
Bile vessel
Cholcyst/o
Gallbladder
-Kinin
Movement substance
Exocrine terminology
Exo: outside
Crine: to secrete
Endocrine terminology
Endo: inside
Crine: to Secrete
Ascites
Excessive intraperitoneal fluid
Diarrhea terminology
Dia:through, complete
Rrhea: discharge, flow
Diarrhea
Abnormal discharge of watery, semisolid stools
Dysphagia terminology
Dys: difficult, bad
Phagia: condition of eating/ swallowing
Dysphagia
Difficulty of swallowing that may be due to an obstruction (eg:tumor) or a motor disorder (eg: spasm)
Eructation
Release of air from stomach through mouth. Burping, bleching
What causes Eructation
Rapid eating, intentionally or unintentionally swallowing air (aerophagia)
Flatulence, flatus
Gas expelled through the anus
Gastralgia, gastrodynia
Abdominal pain
Halitosis terminology
Halit/o : breath
Osis: abnormal condition
Halitosis
Bad smelling breath
Hepatomegaly
Enlargement of the liver
Juandice or icterus
Yellowing of the skin and sclerae caused by high levels of bilirubin
Sclerae
Whites of the eye
Nausea
Sensation that accompanies the urge to vomit but doesn’t always lead to it.
Nausea is deprived from
A greek work : seasickness
N&V refers to
Nausea and vomiting
Pyrosis terminology
Pyr/o: fire
Osis: abnormal condition
Pyrosis
Heart burn
Painful burning sensation in the esophagus
Pyrosis is caused by
a reflux of stomach contents, hyperactivity, or peptic ulcer.
Vomiting
Forcible or involuntary emptying of the stomach through the mouth
Vomitus, emesis
Material expelled through vomiting
Ankyloglossia terminology
Ankyl/o: stiffening
Gloss/o: tongue
Ia: condition
Ankyloglossia
Inability to move the tongue freely as a result of a congenital shortened frenulum
Ankyloglossia another term for it
Tongue tied
Cleft palate
Failure of the palate to close during the embryonic development, creating an opening in the roof of the mouth and is often accompanied by a cleft lip
Esophageal atresia terminology
A: without
Tresia: condition of opening
Esophageal atresia
Esophagus that ends in a blind pouch and therefore lacks an opening into the stomach
Gastroschisis terminology
Hastr/o: stomach
Schisis: split
Gastroschisis
Congenital opening in the anterior abdominal wall
Pyloric stenosis terminology
Pylor/o: pylorus
Ic: pertaining to
Stenosis: narrowing
Pyloric stenosis
The muscle between the stomach and the small intestine narrows or fails to open adequately to allow partially digested food into the duodenum
Omphalocele, exomphalos
A congenital herniation at the umbilicus
Omphalocele terminology
Omphal/o: umbilicus
Cele: herniation, protrusion
Hirschsprung’s disease (congenital megacolon)
Cogenital absence of normal nervous functions in part of the colon which results in an absence of peristaltic movement, accumulation of feces and enlarged colon
Pytalism
Condition of excessive salivation
Pytalism terminology
Ptyal/o: saliva
Ism: condition
Sialoadenitis terminology
Sialoaden/o: salivary gland
Itis: inflammation
Sialoadenitis
Inflammation of salivary gland
Sialolithiasis terminology
Sial/o: saliva
Lith/o:stone
Iasis: presence of, condition
Sialolithiasis
Condition of stones on the salivary gland or duct
Gingivitis terminology
Gingiv/o: gums
Itis: inflammation
Gingivitis
Inflammation of the gum with redness, swelling and bleeding
Oral mucositis terminology
Or/o: mouth
Al:pertaining to
Mucos/o: mucus
Itis: inflammation
Oral mucositis
Inflammation of the mucus membrane of the mouth
Gastrointestinal mucositis is an effect of
Chemotherapy
Oral leukoplakia terminology
Leuk/o: white
Plakia: condition of patches
Oral leukoplakia
Condition of white patches that may appear on the lips and the buccal mucosa. Associated with tobacco and may be pre cancerous
Dental caries
Plaque disease caused by an interaction between food and bacteria in the mouth causing tooth decay
(Cavities)
Cheil/o
Lips
Cheilitis
Inflammation of the lips
Aphthous stomatitis (cranker sore)
Recurring condition characterised by small erosions ( ulcers) which appear on the mucous membrane
Aphthous stomatitis terminology
Aphth/o: ulceration
Ous: pertaining to
Stomat/o: mouth
Itis: inflammation
Anodontia
Complete of partial lack of teeth
Anodontia terminology
An: no, not
Odont/o: teeth
Ia: condition
Achalasia/ cardiospasm/ megaesophagus/ esophageal aperistalsis
Impairment of esophageal peristalsis with the lower esophageal sphincter inability to relax
Dyspepsia terminology
Dys: abnormal
Pepsia: digestion condition
Dyspepsia (indigestion)
Feelings of discomfort that occurs after eating (bloating, nausea, fullness, heartburn, )
Esophagitis
Inflammation of esophgus
Gastritis
Acute or chronic inflammation, maybe accompanied by anorexia, nausea, vomiting, indigestion
Anorexia
Lack of appetite
Peptic ulcer disease (PUD) (gastric/ duodenal ulcer)
Erosion of the protective mucosal lining of stomach or duodenum
Gastroesophageal reflux disease (GERD)
Return of the contents of stomach to the esophagus
, characterised by pyrosis, caused by inability of lower esophageal sphincter to contract normally. With or without vomiting.
Barretts esophagus
Caused by chronic reflex and increases risk of cancer
Reflux
Re:Back
Flex: Flow
Appendicitis
Acute or chronic Inflammation of appendix. Occurs with or without peritonitis
Colitis
Inflammation of colon
Types of inflammatory bowel disease
Ulcerative colitis
Crohn disease
Ulcerative colitis
Chronic inflammation of the colon and rectum manifesting diarrhea
Crohn disease (regional or granulomatous enteritis)
Inflammation of ileum (last part of small intestine) or the colon that is of idiopathic origin
Anal fissure
Crack like lesion of the skin around the anus
Anorectal abscess
Circumscribed area of inflammation in the anus or rectum containing pus.
Anorectal fistula
Abnormal Channel between the rectum and anus
Constipation
Infrequent incomplete or delayed bowel movement
Obstipation
Difficult to manage constipation or intestinal obstruction
Polyp of colon
Benign growth on the mucous membrane of large intestine
Irritable bowel syndrome (IBS)
Diarrhea, gas, constipation resulting from stress with no disease
Intussusception
Inward telescoping of the intestine
Paralytic/ adynamic ileus
Obstruction
Lack of peristaltic movement in the intestinal tract
Diverticulosis
Diverticul/o
Diverticulosis
Development of pouches in the lining of intestine
Diverticulitis
Inflammation occurring secondary to the occurrence of diverticulosis
Proctitis
Inflammation of rectum and anus
Proct/o
Rectum and anus
Proctoptosis
Prolapse of rectum outside of anus
-ptosis
Drooping
Volvulus
Twisting of intestine
Cirrhosis terminology
Cirrh/o: orange/ yellow
Osis: abnormal condition
Cirrhosis
Chronic degenerative disease of the liver associated with alcohol abuse, chronic liver disease, and biliary tract disorders
Peritonitis
Inflammation of the peritoneum that most commonly occurs when an inflamed appendix rupture.
Pancreatitis
Acute or chronic Inflammation of the pancreas
Cholangitis
Inflammation of bile vessels
Cholecystitis
Inflammation of gallbladders (acute or chronic)
What is cholecystitis is caused by
Choledocholithiasis
Cholelithiasis
Choledocholithiasis
Presence of stones in common bile ducts
Cholelithiasis
Calculi in the gallbladder. Characterised by biliary colic with nausea and vomiting
Calculi
Stones
Biliary colic
right upper quadrant pain that is a symptom of cholelithiasis
Celiac disease / celiac sprue
Disorder of inability of intestines to absorb wheat proteins
Hematemesis
Vomiting of blood
Celi/o
Abdomen
Emesis
Vomiting
Melena
Black tarry stools caused by presence of partially digested blood
Melan/o
Black
Gastroplasty
Surgically forming the stomach preformed as type of bariatric surgery (weight loss)
Gastrostomy
Making a new opening in the stomach
Precuraneous endoscopic gastrostomy
PEG
Opening in the stomach for the purple of placing a tune for internal feeding
Stomy
New opening
Sialoaden/o
Salivary gland
Sialoadenectomy
Removal of a salivary gland usually the submandibular due to inflammation, Stone or cancer
Sialodochoplasty
Surgical correction of salivary duct often following the removal of a stone on the salivary gland
Stomatoplasty
Surgical reconstruction of the mouth to correct malformation due to trauma, disease or congenital diseases
Uvulectomy
Removal of part or all of uvula to correct snoring
Appendectomy
Cutting out the appendix
Incidental appendectomy
Occurs of the removal of the appendix is secondary to another surgery
-Pexy
Suspension
Cecopexy
Fixation of the cecum to prevent or correct volvulus of the cecum
Volvulus
Loop of intestine twisting around itself
Diverticulectomy
Cutting out a diverticulim
Colostomy
Surgical redirection of the bowel to a stoma, an artificial opening on the abdomenal wall
Stoma
Artificial opening that feces and urine exists through after a surgery
Cholangiography
Radiographic procedure that captures images of common bile vessel by injection of a contrast medium in the bile duct
Cholecystectomy
Cutting out the gallbladder (laparoscopically: through use of small incisions in the abdomen)
Choledochectomy
Cutting out part or all of the common bile duct to treat cancer in proximal duodenum
Choledocholithotomy
Cutting out a stone from the common bile duct( could be done openly or laparoscopically)
Lithotomy
Cutting out a stone