ANSC 311 Lab Exam

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ANSC 311 Lab Exam
2013-03-13 23:01:07

Metabolic Physiology Lab Exam
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  1. What are the 4 types of digestion?
    • Mechanical
    • Chemical
    • Enzymatic
    • Microbial
  2. What are the canaliculi of the liver and what is their funtion?
    • Canals that merge to make bile ductucles
    • Collect bile secreted by hepatocytes
  3. What is hardware disease?
    • Traumatic reticuloperitonitis
    • Piece of ingested metal falls into reticulum, can puncture lining into peritoneal cavity and sometimes the heart. Causes severe inflammation and sometimes pericarditis.
  4. Does a chicken have a gallbladder? A pig?
    • Yes
    • Yes
  5. What enzymes come from the pancreas?
    • Lipase: break down fat
    • Protease: break down protein
    • Amylase: break down carbs
  6. What gases are formed in the rumen?
    • Methane
    • Carbon dioxide
  7. How do you treat bloat?
    • Exercise
    • Stomach Tube
    • Trocar & cannula
    • Rumenotomy
  8. How do you diagnose bloat post mortem?
    Look for the "bloat line" in the esophagus
  9. What is jaundice?
    Yellowing of skin/eyes due to bilirubin build up (too many RBCs dying, overloaded/damaged liver, unable to move through GIT properly)
  10. What arteries/veins flow to/from liver?
    • To
    • Portal Vein
    • Hepatic Artery

    • From
    • Hepatic Vein
  11. What is the role of the heptic artery?
    Provide oxygen and nutrients to support the liver
  12. What is the role of the hepatic vein?
    Carry filtered blood from liver to inferior vena cava
  13. What are the 3 colon flexures in horses?
    • Sternal
    • Pelvic
    • Diaphragmatic
  14. What is the colon of a horse used for?
    Absorb water, and carbs produced by the breakdown of cellulose in the cecum
  15. What chemical is produced in the rumen for glucose synthesis?
  16. What is acetate used for?
    • E source
    • Substrate for FA synth in fat and mammary glands
  17. What is butyrate used for?
    Ruminal wall E source
  18. What do cows use N for?
    Microbial protein synth
  19. What is secreted by the pancreas?
    • Exocrine secretions
    • Proenz
    • Enz
    • Bicarb

    • Endocrine
    • Insulin
    • Glucagon
  20. What are the exocrine hormones involved in digestion?
    • Acetylcholine
    • Nitric Oxide
    • Adenotriphosphate
    • Serotonin (5-HT)
  21. What endocrine hormones are involved in digestion?
    • Peptides
    • Cholecystokinin
    • Gastrin
    • Motilin
    • Gastric inhibitory polypeptide
    • Somatostatin
    • Substance P
    • Galanin
    • Enteroglucagon
    • Gastrin-releasing peptide
    • Enkephalins
    • CGRP
  22. What are the effects of the SNS on the GIT?
    • Inhibit digestion
    • Postganglionic neurons release Norepinephrine
    • Decrease smooth muscle motility, exocrine/endocrine secretion
  23. What are the effects of the PSNS on the GIT?
    • Promote digetion
    • Postganglionic neurons neurons release Ach
    • Increase smooth muscle motility, exocrine/endocrine secretion
  24. What is the thymus and what is it's role?
    Specialized immune organ that "educates" T-cells. Located in chest cavity.
  25. What are the functions of the liver?
    • Glycogen synth
    • FA synth
    • Gluconeogenesis
    • Triglyc synth
    • Lipoprotein synth (VLDL)
    • Ketone synth
    • Plasma protein synth
    • Storage
    • Detoxification
    • Produce Bile
  26. How does a pig swallow food?
    • Mastication
    • Moves to back of mouth with tongue
    • Laryngeal closure via epiglottis
    • Pharyngeal peristalsis
    • Striated then smooth muscle of esophagus propel bolus toward stomach
    • Relaxation of lower esophageal sphincter
    • Peristalsis
    • Stomach
  27. What gives strength to the rumen wall?
    Stratified squamous keratinized epithelium