Assessing The Abdoment Flashcards
- hollow tube that begins at the mouth and ends at the anus
- 7.5 meters long, consist of smooth muscles alternating with blood vessels and nerve tissue
Gastrointestinal Tract
- happens when specialized circular and longitudinal fibers contract
- aids in propelling food through the GIT
Peristalsis
- a hollow muscular tube that connects food to the stomach
- lies behind the trachea and infront of the spine
Esophagus
Propels food to the stomach
Esophagus
Length of esophagus in adults
- 10-13 inches (25-33 cm) long
- 3/4 inch (2 cm) across
Protects the entrance of the stomach
Cardiac sphincter
Guards the exit of the stomach
Pyloric sphincter
- dilated saclike structures that lies obliquely in the LUQ
- has 2 important structures (cardiac and pyloric)
- stores food and mixes it with gastric juice
- secretes intrinsic factor that protect b12 from stomach acids and facilitates absorption of b12
- passes chyme into the small intestine for further digestion and absorption
Stomach
Semifluid mass of partially digested food
Chyme
- absorb essential nutrients into the bloodstream
- duodenum, jejunum, ileum
- primary site for digestion
Small intestine
Aided in its work by the liver, gallbladder, pancreas
Small intestines
- 10 inches
- bile from the liver and pancreatic secretions are added to the chyme
Duodenum
- part/s of the small intestine that are responsible for the breakdown and absorption of most nutrients
Jejunum (8 ft) and Ileum (12 ft)
Why is the appendix a breeding ground for intestinal bacteria ?
It contains large amount of lymphatic tissue
- found in the ileocecal junction
- narrowest part of the intestine and frequent site for bacteria and indigestible matter to become trapped leading to inflammation (appendicitis)
Appendix
Composition of the large intestines
Cecum
Ascending colon
Transverse colon
Descending colon
Sigmoid colon
Rectum
Anus
- absorbs sodium and water
- stores food residue
- eliminates waste products
- helps synthesize vitamin b12 and K
Large intestines
(5) Accessory Glands
- Salivary glands
- Liver
- Gallbladder
- Bile ducts
- Pancreas
Three salivary glands
Parotid
Submandibular
Sublingual
- produces saliva
- secretes amylase
Salivary glands
Glands located under the ear and jaw
Parotid
Salivary gland located under the jaw
Submandibular
Located on the floor of the mouth under the tongue
Sublingual
Moistens and lubricates food
Saliva
Converts starches to maltose
Amylase
A greenish fluid in the liver that helps digest fats and absorb fatty acids, gives stool its color
Bile
- metabolizes carbohydrates, fats, proteins
- detoxifies blood
- converts glucose to glycogen (stored in the lier)
- converts ammonia to urea for secretion
- synthesizes plasma proteins, stores vitamins, essential nutrients, and minerals
- secretes bile
Liver
Cells that release insulin to regulate sugar level
Beta cells
Cells that secretes glucagon that stores carbohydrates
Alpha cells
Cells that secretes somastatin that inhibits insulin and glucagon secretions
Delta cells
Known as the hypothalamic inhibiting hormone
Somastatin
Enzymes that aid in digestion
Pancreatic enzyme
Secretes pancreatic polypeptide that regulates the release of pancreatic enzymes
F cells
- stores and concentrates bile
Gallbladder
(3) Bile Ducts
- Hepatic ducts
- Cystic duct
- Common bile duct
Is a bitter tasting, dark green to yellowish brown fluid, produced by the liver, that aids the digestion of lipids in the small intestine
Bile or gall
Duct that drains bile from the liver
Hepatic
Duct that drains bile from the gallbladder
Cystic duct
Duct that receives bile from the other two ducts and empties bile from the duodenum
Common bile ducts
- located in the upper left side of the abdomen
- filters the blood by removing old or damaged blood cells and platelets
- helps the immune system by destroying bacteria and other foreign substance
- stores RBC’s and platelets
Spleen
Serous membrane that covers the abdominal cavity
Peritoneum
Type of peritoneum that lines walls of abdomen
Parietal peritoneum
Type of peritoneum that coats the outer surface of organs
Visceral peritoneum