is a mucous membrane-lined cavity where food enters the digestive tract
Salivary glands
parotid
sublingual
submandibular
Upper Gastrointestinal Tract
mouth and salivary glands
esophagus
stomach
smallintestine
Lower Gastrointestinal Tract
largeintestine
rectum
anus
Regions/parts of small intestine
duodenum
jejunum
ileum
Esophagus
its primary function is to transport solids and liquids from the mouth into the stomach
Mouth
where digestion begins
Hard palate
anterior roof of the mouth
Tonsils
palatine
lingual
Epiglottis
guardian of the airway
Stomach
mix food with digestive juices, causing the chemical and mechanical breakdown of food into chyme before entering the small intestine
Chyme
thick fluid mass of partially digested food and gastric secretions that is passed from the stomach to the small intestine
Hydrochloric acid
combines with the digestive enzymes to cause breakdown of food structures
Hydrochloric acid
helps kill harmful bacteria ingested with the foods
Pepsin
is an enzyme produced in the mucosal lining of the stomach that acts to degrade protein
Intrinsic factor
is a protein produced by the cells in the stomach lining
Intrinsic factor
it is needed for the intestines to efficiently absorb Vitamin B12 which is needed to produce absorb red blood cells
Mucus
protects the stomach lining from damage by the gastric acid and enzyme activity
Small intestine
has digestive and absorptive functions, intestinal juices and bile from the liver, gallbladder, and pancreas mix with the chyme for digestion and absorption of nutrients
Duodenum
part of small intestine that secretes hormones that trigger the pancreas to release pancreatic juice and bile
Duodenum
part of small intestine that protects the intestine by secreting chemicals that neutralize the acidity of the chyme from the stomach befor it reaches the jejunum
Jejunum
part of small intestine that controls the carbohydrate and protein absorption
Ileum
part of small intestine responsible for the absorption of fats, bile salts, and water
Regions/parts of large intestine
cecum
appendix
ascending colon
transverse colon
descending colon
sigmoid colon
rectum
anus
Large intestine
the primary organ for bowel elimination
Rectum
the final portion of the large intestine and absorbs excess water
Sensory nerves in the anal canal help control bowel continence.
Rectum
has internal and external anal sphincter each controlled by sympathetic and parasympathetic nervous system
Defecation
also called as bowel movement
Defecation
the final act of digestion
Bristol Stool Chart
developed in 1997 as a clinical assessment tool and designed to classify stools into seven groups
Characteristics of feces vary depending on diet, illness, medications, age
Peristalsis
a type of intestinal motility, characterized by radially symmetrical contraction and relaxation of muscles that propagate in a wave down a tube, in an anterograde direction
Kidneys
the major excretory organs of the body
Nephrons
functional units of the kidneys
Kidneys
organs located bilaterally below the ribs toward the middle of the back
Functions of kidneys:
filter liquid waste from the blood
balance electrolytes in the blood
regulate blood volume and pressure
produce erythropoietin for RBC formation
synthesize Vitamin D to help control Calcium levels
maintain the acid-base balance of the extracellular fluid