Ruminant Abdomen Flashcards
What is a ruminant?
Ruminants
- mammals that convert plant complex carbs into fatty acids and sugars via bacterial fermentation (symbiosis)
- microbes synth vitamins and recycle nitrogen into proteins
- cattle, goat, sheep, yaks, deer, camels, llamas, antelope
Cow Stomach
Note: 3 forestomaches and only one true stomach (abomasum)
orientation and size of abdominal viscera varies with age and pregnancy. Identify and explain the images
- A= Calf
- large liver and abomasum
- important in milk digestion ^
- B= mature cow
- rumen is large and occupies left side of abdomen
- liver cranial
- C= pregnant cow
- uterus displaces rumen dorsally and abomasum cranially
identify quadrants and view
four strata of ingesta in the rumen
- dorsal most layer forms gas bubble
- ventral most layer is a liquid zone
- variation in papilla within different compartments of the rumen (larger ventrally)
Traumatic reticulitis
Traumatic reticulitis= hardware disease
- metal in the reticulum
talk about the reticular groove
sequence of flow when closed vs. open
Whats this?
Omasum
- has numerous folds= Laminae
- interlaminar recesses
- omasal groove
- omasoabomasal orifice
whats this?
Lable
Identify
Borders of paralumbar fossa
** note that most stomach compartments are located deep to the ribs!!!
Clinically you can use the left paralumbar fossa to access the rumen and reticulum—> can feel for hardware disease!
whyd he say these red and blue lines are important?
Identify 5, 6, 7
blood supply return to this**
*** return to this
- splenic artery
- right ruminal artery
- left ruminal artery
*
Innervation of ruminant stomach
ruminant small intestine
small intestine
- duodenum- yellow
- jejunum- *** ahhhh go back and learn
where does blood supply originate for ruminant centripetal gyri?
ileocolic- colic branch
**centrofugal = richt colic artery
