oral cavity: digestive system/peritoneal cavity Flashcards
what structures are included in the digestive system (apparatus digestorius)?
mouth
pharynx
oesophagus
stomach
small intestine
large intestine
what is the thoracic cavity lined with?
end-thoracic fascia
what is the abdominal (and pelvic) cavity lined with?
transversals fascia
what is fascia?
a sheet of fibrous connective tissue that surrounds muscles and other organs
What is a serous membrane?
a layer of simple squamous epithelial cells supported by thin connective tissue that connects to the underlying structure (fascia)
what are the 3 types of serosa?
parietal serosa
visceral serosa
connecting serosa
what does the parietal serosa line?
wall of the cavity
what does the visceral serosa line?
the organs
what is the serous membrane in the abdominal cavity called?
peritoneum
what do you call the peritoneum lining the peritoneal cavity?
parietal peritoneum
what do you call the peritoneum lining the organs?
visceral peritoneum
what is the peritoneal cavity lined by?
peritoneum
name the 3 types of peritoneum
parietal
visceral
connecting
name the 4 types of connecting peritoneum
messentry
ligaments
folds
omenta (omentum)
define connecting peritoneum
double slavered serosa connecting 2 peritoneum
what are peritoneal pouches?
excavations of peritoneum into the pelvic cavity
what is messentry?
peritoneum connecting intestinal and abdominal wall
define connecting peritoneum: ligaments
between visceral and parietal peritoneum or between two visceral peritoneum
what is a peritoneal fold?
connecting peritoneum between two visceral peritoneum
what is omenta (omentum)
connecting peritoneum between the stomach and abdominal organs or abdominal wall
name the 4 layers of the tubular organs in the digestive tract from the inside out
tunica mucosa
tunica submucosa
tunica muscularis
tunica serosa/adventitia
where is the tunica mucosa
next to the lumen
what is the tunica submucosa?
dense connective tissue
what is the tunica muscularis?
smooth or skeletal muscle
what is the tunica serosa/adventitia
loose connective tissue, special names for serosa e.g peritoneum
name the 3 layers of the tunica mucosa
laminae epithelialis mucosa
laminae porpria mucosa
laminae muscularis mucosa
what layer is the laminae epithelial mucosa and what does it rest on?
epithelial layer, rests on basal membrane
what layer is the lamina propria mucosa?
connective tissue layer
what layer is the lamina muscular mucosa?
smooth muscle layer
what are the 3 regions of the oesophagus?
cervical thoracic
abdominal
what does the oesophagus go between?
pharynx and stomach
what does the oesophagus generate and through what?
diaphragm through oesophageal hiatus
Species difference in tunica muscularis
In ruminants and dogs: entirely skeletal muscle
In humans and chickens: entirely smooth muscle
In horses and cats: distal third is smooth muscle, rest is skeletal
