Anatomy of Small Intestine (Jejunum and Ileum)
24 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the main function of the small intestine?

  • Absorbing nutrients and water from food (correct)
  • Storing bilirubin
  • Producing and absorbing vitamins
  • Forming and propelling feces toward the rectum

    • Which part of the small intestine is the most mobile?

  • Ileocecal junction
  • Jejunum (correct)
  • Duodenum
  • Ileum

    • What is the function of the large intestine?

  • Absorbing nutrients and water from food
  • Producing and absorbing vitamins, and forming and propelling feces (correct)
  • Storing bilirubin
  • Regulating blood sugar levels

    • What is the location of the jejunum in dogs?

    <p>Ventral part of the abdominal cavity</p> Signup and view all the answers

    What is unique about the cecum in canines?

    <p>It has no direct connection to the ileum</p> Signup and view all the answers

    What is the function of the bacteria in the cecum?

    <p>Digesting plant fibers</p> Signup and view all the answers

    What is the length of the cecum in horses?

    <p>1 m</p> Signup and view all the answers

    What is the location of the ileum?

    <p>The short terminal of the small intestine</p> Signup and view all the answers

    What is the characteristic of the sigmoidal flexure in ruminants?

    <p>It is present only in the large intestine</p> Signup and view all the answers

    Which of the following is NOT a characteristic of the Ansa distalis coli?

    <p>It is present in the small intestine</p> Signup and view all the answers

    What is the function of the colon transversum in ruminants?

    <p>It is crossed by the cranial mesenteric artery</p> Signup and view all the answers

    What is the characteristic of the rectum in ruminants?

    <p>It has a transverse fold</p> Signup and view all the answers

    What is the characteristic of the lobulation of the liver in ruminants?

    <p>It has a single right lobe</p> Signup and view all the answers

    What is the characteristic of the gallbladder in horses?

    <p>It is absent</p> Signup and view all the answers

    What is the characteristic of the Facies diaphragmatica of the liver?

    <p>It is convex</p> Signup and view all the answers

    What is the characteristic of the border of the liver?

    <p>It is round on the dorsal side and sharp on the ventral side</p> Signup and view all the answers

    What is the shortest part of the colon in a carnivore?

    <p>Colon transversum (transverse colon)</p> Signup and view all the answers

    What is the longest part of the colon in a carnivore?

    <p>Colon descendens (descending colon)</p> Signup and view all the answers

    What is the function of the mesorectum in a carnivore?

    <p>Supports the rectum</p> Signup and view all the answers

    What is the name of the flexure formed by the colon ventral dextrum in an equine?

    <p>Flexura diaphragmatica ventralis</p> Signup and view all the answers

    What is the order of the parts of the colon in an equine, from right to left?

    <p>RV &gt; LVC &gt; RDC &gt; LDC</p> Signup and view all the answers

    What is the name of the flexure formed by the colon ventral sinistrum in an equine?

    <p>Flexura pelvina</p> Signup and view all the answers

    What is the characteristic of the ansa spiralis in a ruminant?

    <p>Coils-shaped with three parts</p> Signup and view all the answers

    What is the function of the descending mesocolon in a ruminant?

    <p>Supports the descending colon</p> Signup and view all the answers

    Study Notes

    Small Intestine

    • Absorbs nutrients (vitamins, minerals, carbohydrates, fats, proteins) and water from food

    Jejunum

    • Most mobile part of small intestine
    • Located in the ventral part of the abdominal cavity in dogs and covered by greater omentum
    • Located in the left dorsal part of the abdomen in horses
    • Located in the supramental recess in ruminants

    Ileum

    • Short terminal part of the small intestine
    • Connects to the cecum (first part of the large intestine)

    Large Intestine

    • Has three primary functions: absorbing water and electrolytes, producing and absorbing vitamins, and forming and propelling feces toward the rectum for elimination
    • Divided into the cecum, colon, and rectum in all domestic animals

    Cecum

    • Unique because it has no direct connection to the ileum in canines
    • A short, comma-shaped diverticulum of the ascending colon in cats, about 2-3 cm long
    • In horses, it is attached to the dorsal body wall near the right kidney and the root of the mesentery and has sacculation
    • In ruminants, it is present between the small intestine and large intestine
    • Contains bacteria that digests plant fibers in horses and ruminants
    • Has three taeniae with three row sacculations in pigs, similar to horses

    Colon

    • Divided into the ascending colon, transverse colon, and descending colon
    • Has a sigmoidal flexure in ruminants
    • Has an Ansa distalis coli (distal loop) that joins to the transverse colon

    Rectum

    • Located in the pelvic cavity
    • Has a transverse fold in ruminants

    Liver (Hepat)

    • Largest gland in the body, both endocrine and exocrine in function
    • Surface: facies diaphragmatica (convex) and facies visceralis (related to stomach, duodenum, transverse colon, jejunum, and right kidney)
    • Border: Margo dorsalis (round), Margo ventralis (sharp), Margo sinister (sharp), Margo dexter (sharp)
    • Lobulation: right lobe, left lobe, quadrate lobe, and caudate lobe
    • Ruminants have single right and left lobes, while carnivores have more lobulation
    • Horse has no gallbladder and a quadrate lobe has been cut
    • Impressions on the liver are from the colon

    Colon Impressions on the Liver

    • Colon descendens is the shortest part in carnivores
    • Colon transversum passes from right to left between stomach and cranial mesenteric artery
    • Colon descendens is the longest part and connects to the rectum

    Equine's Colon

    • Colon ascendens has four parts: colon ventral dextrum, colon ventral sinistrum, colon dorsale sinistrum, and colon dorsale dextrum
    • Colon transversum is the shortest part, involved in the dorsal attachment of the right dorsal colon
    • Colon descendens begins to the left of the root of the mesentery and has two taenia bands forming sacculation

    Ruminant's Colon

    • Colon ascendens has an ansa proximalis coli (proximal loop) and an ansa spiralis (spiral loop) with centripetal and centrifugal turns
    • The last centrifugal turn is away from the coil to come close to the jejunum in small ruminants

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    This quiz covers the anatomy of the jejunum and ileum, including their locations and characteristics in different animals.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser