27: Upper GI

mouth

pharynx

Esophagus

Stomach

jejunum

colon

rectum

anus

ileum

cecum

duodenum

salivary glands

esophagus

stomach

colon

stomach

nasal cavity

mouth

pharynx

esophagus

digestive system

respiratory system

trachea

small intestine

large intestine

Where do the respiratory and digestive systems overlap?

pharynx

How does food move through the dog’s digestive system?

mouth

esophagus

stomach

small intestines

large intestines

rectum

anus

oral

towards the mouth

aboral

away from hte mouth, toward the anus

esophagus

hollow tubular organ

from esophageal opening (pharynx) to caridac opening (stomach), passes thru esophageal hiatus (diaphragm)

lies in soft tissue of neck, mediastinum of thoracic cavity

left of trachea

esophageal opening of pharynx

esophageal hiatus of diaphragm

cardiac opening of the stomach

what are the 3 places food can get stuck in a bov esophagus?

cervical esophagus

thoracic esophagus

abdominal esophagus

what are the 3 places in the cervical esophagus where choke can occur?

cranial esophageal sphincter/opening

first fissure

narrowing of lumen

where in the thoracic esophagus can choke occur?

second flexure

where in the abdominal esophagus can choke occur?

caudal esophaeal sphincter

cranial esophagus, cranial esophageal sphincter/opening

first flexure, cranial esophagus

narrowing of lumen, cranial

second flexure, thoracic esophagus

caudal esophageal sphincter, abdominal

what serous membrane covers the organs in the abdominal (peritoneal) cavity?

visceral peritoneum

what serous membrane covers the walls of the abdominal cavity?

parietal peritnoeum

mesentary

suspends organs of abdominal cavity from the dorsal wall

connective tissue, fat, blood supply

mesentery

intestine

body wall

parietal peritoneum

visceral peritoneum

paeietal peritoneum

visceral peritoneum

red

root of the mesentery

great mesentery

omentum

like mesentery, is not suspensory except in bov

connectiev tissue, fat, blood

\

greater omentum

lesser omentum

liver

\

Stomach

superficial leaf

deep leaf

Greater omentum

Jejunum

Mesojejunum

Pancreas

Mesocolon

Lung

Descending duodenum

Spleen

Bladder

Superficial leaf, greater omentum

Spleen

Liver

Pancreas

simple stomach

Single chamber

Domestic animals, carnivores, horses, pigs

compound stomaches

Four chambers

Ruminants

Body

Pylorus

Lesser curvature

Greater curvature

Esophagus

\

Fundus

Cardiac opening

Rugae

Stomach

Gastric folds (rugae)

Cardiac sphincter

Pyloric sphincter

what are the three parts of the simple stomach?

Fundus, body, pylorus

fundus

Blind end of stomach

Adjacent to cardiac openingb

body

Main portion of s tomach

Contains rugae

pylorus

Portion of stomach leading to small intestines

glandular

Lined by secretory cells

Carnivore stomach

saccus caecus

Expanded blind sac

Horses

nonglandular

Nonsecretory continuation of tissue lining esophagus

Saccus caecus, blind sac

Margo plicatus

Nonglandular

Glandular