Ch.8 Digestive System Flashcards
What are the 8 major structures of the digestive system or GI tract?
What are the 3 accessory organs involved?
- oral cavity-mouth
- pharynx-throat
- esophagus
- stomach
- small intestine
- large intestine
- rectum
- anus
- liver
- gallbladder
- pancreas
structure whose role is to close off the nasal passage during swallowing to prevent food and liquid from moving upward into the nasal cavity
soft palate
hangs from the free edge of the soft palate, move upwards during swallowing
uvula
small bumps found on the tongue which contain the taste buds
papillae
soft tissue and bone that surround and support teeth
periodontium
term that refers to the natural teeth arranged in the upper and lower jaws
dentition
term for the 20 baby teeth that are lost during childhood
primary dentition
term for the 32 teeth that are designed to last a lifetime
permanent dentition
means without teeth
edentulous
term used in dentistry that describes any contact btw the chewing surfaces of the upper and lower teeth
occlusion
any deviation from the normal positioning of the upper teeth against the lower teeth
malocclusion
muscular tube through which ingested food passes from the pharynx to the stomach
esophagus
muscular ring that controls the flow btw the esophagus and stomach, also known as the cardiac sphincter or gastroesophageal sphincter
lower esophageal sphincter
folds in the mucosa lining the stomach which contain glands that produce gastric juices for digestion and mucus for a protective coating
rugae
narrow passage that connects the stomach with the small intestine
pylorus
ring-like muscle that controls the flow from the stomach to the duodenum of the small intestine
pyloric sphincter
what are the three sections of the small intestine (which can be up to 20 feet total)
- duodenum-first
- jejunum-middle
- ileum-last-longest portion
area where food is digested and nutrients are absorbed into he bloodstream
small intestine
area where waste products of digestion are processed in prep for excretion
large intestine
What are the 4 major parts of the large intestine?
- cecum
- colon
- rectum
- anus
pouch that lies on the right side of the abdomen and starts the beginning of the colon
cecum
ring-like muscle that controls the flow from the ileum of the small intestine into the cecum of the large intestine
ileocecal phincter
longest part of the large intestine
colon
the part of the colon that travels upward from the cecum to the undersurface of the liver
ascending colon