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 (C)</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 (A)</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 (B)</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 (A)</p> Signup and view all the answers

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

<p>Perineal vein (A)</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 (A)</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 (A)</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 (C)</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) (A)</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 (A)</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 (A)</p> Signup and view all the answers

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

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

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

<p>Connective tissue sheath (C)</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 (B)</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 (D)</p> Signup and view all the answers

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