TOPIC 8C. The stomach of ruminants, blood supply and innervation Flashcards
name the 4 parts of ruminant stomach
rumen reticulum omasum and abomasum
which part is considered the true stomaach
abomasum
which is the largest chamber
rumen
what divides the ruminal sacs
pilae ruminis
name the sacs of the rumen
saccus dorsalis., ventralis, cranialis, caudodorsalis, caudoventralis
which sac is known as atrium ruminis
saccus cranialis
what does saccis ventralis have
rec. ruminalis extending from it cranially
what do both saccus caudodorsalis and caudoventralis have
sulcus coronarius dors/vent
list the grooves of the rumen
sulcus longitudinales dors and vent
sulcus accessorius
sulcus cran and caud
sulcus ruminoreticularis
what do sulcus longitudinale and accessorius DEXTRA produce
insula ruminis
what do ruminal papillae do
increase surface area x7
absorb water, vit k and b
what separates the reticulum from the rumen
plica ruminoreticulares
is reticulum in contact with diaphragm
yes
whats distinct about reticulum
honeycomb pattern
what creates this honeycomb pattern of reticulum
cristae reticuli and cellulae reticuli
major role of reticulum
regurgitation of food
whats the smallest compartment of the ruminant stomach
omasum
where is the omasum
between right abdominal wall and rumen
what connects the reticulum to the omasum
ostium reticulomasum
what connect the omasum to the abomasum
ostium omasum-abomasum
what connetc the two openings of the omasum
sulci omasi
what does the interior of the omasum have
lamina omasi
whats the omasum’s role
reabsorption of water
what enters the absomasum
dry matter
what can happen in dairy cows 3-4 weeks after calving
abomasum displacement
wheres the abomasum located
distally, ventral and on right side
what increases the surface area of the abomasum
plicae spirales
what does the abomasum have
fundus, pyloris and corpus
gastric and pyloric glands
whats sulcus ventriculi
gastric groove consisting of reticulum, omasum and abomasum grooves
where does sulcus ventriculi begin - and what does it allow
oesophagus - allows milk straight into abomasum in newborn
what supplies the ruminant stomach
a coeliacas and branches
a ruminalis sin and dex
a reticularis from a ruminalis sin
what supplies the omasum and abomasum
gastroepiploics
what nerves innervate the ruminant stomach
sympathetic: coeliac plexus
gastric plexus and ruminal plexus L&R
also to liver and spleen
parasympathetic: vagus
dorsal trunk: rumen, reticulum, omasum and abomasum
ventral trunk: atrium ruminis, pylorus, gastric groove, liver and duodenum
what veins for the ruminant stomach
portal vein,
v ruminalis,
v ruminalis dextra and
v lienalis
