Importance of Blood Supply in Mammary Function
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Questions and Answers

What is the function of the teat meatus in a cow?

  • To assist in stretching as the gland fills with milk
  • To attach to the udder halves
  • To increase milk production
  • To prevent the escape of milk between two milkings (correct)

    • Which part of the suspensory system in cows has great tensile strength?

  • Gland
  • Median suspensory ligament (correct)
  • Abdominal wall
  • Teats

    • What is the main function of the median suspensory ligament in cows?

  • Enhance milk production
  • Control milk flow
  • Allow for increased weight of the gland (correct)
  • Protect the teat meatus

    • What is the average size for fore teats in cows?

    <p>6.6 cm long and 2.9 cm in diameter</p> Signup and view all the answers

    Which part of a cow's teats consists of convex epithelial projections that form a star-shaped slit?

    <p>Teat meatus</p> Signup and view all the answers

    What happens to the sphincter muscles in a cow when it is being milked?

    <p>They relax to allow the orifice to open</p> Signup and view all the answers

    What is the primary factor responsible for the decrease in milk production as lactation progresses?

    <p>Loss of secretory epithelial cells</p> Signup and view all the answers

    Which vein carries less than 10% of the blood leaving the udder?

    <p>Perineal vein</p> Signup and view all the answers

    What is the approximate blood flow per hour when a cow produces 60 liters of milk per day?

    <p>$1250$ liters</p> Signup and view all the answers

    From which vein does the Subcutaneous abdominal vein (milk vein) exit the mammary gland?

    <p>External iliac vein</p> Signup and view all the answers

    What is the term used to describe the process of programmed cell death leading to a decrease in milk production?

    <p>Apoptosis</p> Signup and view all the answers

    Which vessel carries blood away from the mammary gland anti-parallel to the arteries?

    <p>$CMA ext{&amp;}V$ (caudal mammary artery and vein)</p> Signup and view all the answers

    What is the purpose of post-milking germicidal teat dips?

    <p>To minimize the chance of bacteria entering the mammary gland</p> Signup and view all the answers

    In the mammary gland, what is the limiting factor for the milk producing capacity of the udder?

    <p>Number of secreting cells</p> Signup and view all the answers

    What happens when milk ejection is induced by the release of oxytocin?

    <p>Contraction of myoepithelial cells</p> Signup and view all the answers

    What is the structure that surrounds groups of lobules in the mammary gland?

    <p>Connective tissue sheath</p> Signup and view all the answers

    Why is it important to keep cows standing for a while after milking?

    <p>To minimize teat end contamination before closure</p> Signup and view all the answers

    What is the function of tactile teat stimulation in milk ejection?

    <p>To induce myoepithelial contraction for milk ejection</p> Signup and view all the answers

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