Gastrointestinal system (copy)

oral cavity, esophagus, stomach, small intestine, large intestine, anus, associated glands (salivary glands, liver, pancreas, gallbladder)

oral cavity, esophagus, stomach, small intestine, large intestine, anus, associated glands (salivary glands, liver, pancreas, gallbladder)

Digestive tract consists of the following OESSLAA(slpg)

ingestion, mastication, motility, secretion, hormone release, chemical digestion, absorption, elimination

the structures within the digestive tract allow the ff: (8) (IM MS HCAE)

mucosa, submucosa, muscularis externa, serosa

4 main layers of the general structure of digestive tract

mucosa

epithelial lining, lamina propria, muscularis mucosae

submucosa

dense connective tissue with larger blood and lymph vessels and Submucosal Nerve Plexus/Meissner Nerve Plexus

Muscularis Externa

other term for muscularis

Muscularis externa

smooth muscle layer/s (inner : circular ; outer : longitudinal), Myenteric Nerve Plexus/Auerbach Nerve Plexus

Serosa

thin sheet of loose connective tissue, rich in Blood vessels, lymphatics, adipose tissue, and is covered with mesothelium

esophagus

muscular tube that transports swallowed material from the pharynx to the stomach

25 cm

length of esophagus in adults

stratified squamous non-keratinized epithelium

epithelium of esophagus

loose connective tissue

lamina propria of esophagus

esophageal cardiac glands

glands present in the lamina propria of the esophagus

single layer of longitudinally oriented smooth muscle

muscularis mucosae of esophagus

Meissner’s submucosal plexus

plexus in the submucosa

muscularis externa of esophagus

it contains Auerbach’s myenteric plexus, inner circular and outer longitudinal muscle layers

skeletal muscle

upper 1/3 of the muscularis externa of esophagus

skeletal and smooth muscle

middle 1/3 of the muscularis externa of esophagus

smooth muscle

lower 1/3 of the muscularis externa of esophagus

loose connective tissue

adventitia of esophagus

esophageal-stomach junction

characterized by abrupt transition from stratified epithelium of esophagus to simple columnar epithelium of stomach

stomach

sac-like structure that receives food from esophagus and delivers its contents known as "chyme”, into the duodenum

cardia, fundus, pylorus

3 regions of the Stomach (CFP)

simple columnar epithelium without goblet cells

epithelium of stomach

connective tissue, numerous gastric glands

Lamina propria of stomach has _______

true

true or false?
the muscularis mucosae of stomach has an inner circular, outer longitudinal smooth muscle layer and a third layer MAY BE present in some regions

stomach

the submucosa of _____ has no glands; vascular plexus; Meissner’s submucosal plexus

gastric pits

aka gastric folds

gastric pits

these are found in the mucosa of the stomach