INTRO - 1 - COW_Milk Letdown

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1. Please enter your First and Last Name

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2. Select the best answer. Alveoli must be stimulated for complete milk harvest because:

the vacuum has to extract milk from the udder

cows are used to calves’ suckling movements

there are restrictions at the base of each alveolus and at the beginnings of the milk capillaries

otherwise it would take a long time to completely milk highly productive cows

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3. Select the best answer. In order to squeeze milk from the alveoli during milking, the alveoli must ____.

dissolve

relax

contract

expand

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4. Select the best answer. What causes the alveoli’s movements?

the number of myoepithelial cells near the blood capillaries

the presence of blood capillaries around the milk production units

the amount of milk stored in the myoepithelial cells

the actions of myoepithelial cells that surround the alveoli

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5. Select the best answer. Myoepithelial cells are stimulated by:

a hormone called oxytocin, which is transported to the alveoli by the blood capillaries

a combination of corticoids, epinephrine, oxytocin, and estrogens

a certain amount of milk stored in the alveoli

the neurons that depend on oxytocin and other hormones

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6. Select the best answer. When there is tactile stimulation of the teats, the neuroendocrine reflex that results is the:

pituitary gland releases oxytocin in the bloodstream

liver absorbs oxytocin from the bloodstream

ovaries secrete estrogens and oxytocin to the uterus

suprarenal gland sends corticoids to the udder

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7. Select the best answer. The main factor that causes the release of oxytocin into the bloodstream is the:

massaging of the pituitary gland

temperature of the teat skin

massaging of the teats

contraction of the blood capillaries

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8. Select the best answer. When milk gets to the udder cistern, it can be extracted through the teat canal by:

external, manual pressure on the teat

suction from a calf

the vacuum of milking equipment

all of the above

INTRO - 1 - COW_Milk Letdown

Question Title

* 1. Please enter your First and Last Name

Question Title

* 2. Select the best answer. Alveoli must be stimulated for complete milk harvest because:

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* 3. Select the best answer. In order to squeeze milk from the alveoli during milking, the alveoli must ____.

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* 4. Select the best answer. What causes the alveoli’s movements?

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* 5. Select the best answer. Myoepithelial cells are stimulated by:

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* 6. Select the best answer. When there is tactile stimulation of the teats, the neuroendocrine reflex that results is the:

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* 7. Select the best answer. The main factor that causes the release of oxytocin into the bloodstream is the:

Question Title

* 8. Select the best answer. When milk gets to the udder cistern, it can be extracted through the teat canal by:

1. Please enter your First and Last Name

2. Select the best answer. Alveoli must be stimulated for complete milk harvest because:

3. Select the best answer. In order to squeeze milk from the alveoli during milking, the alveoli must ____.

4. Select the best answer. What causes the alveoli’s movements?

5. Select the best answer. Myoepithelial cells are stimulated by:

6. Select the best answer. When there is tactile stimulation of the teats, the neuroendocrine reflex that results is the:

7. Select the best answer. The main factor that causes the release of oxytocin into the bloodstream is the:

8. Select the best answer. When milk gets to the udder cistern, it can be extracted through the teat canal by: