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Anatomy > Mammy Gland > Flashcards

Mammy Gland Flashcards

1
Q

What is the mammary tissue locations of carnivores, pigs, primates, ruminants, and horses?

A

Thoracic to inguinal: carnivores, pigs
Thoracic: primates
Inguinal: ruminants, horses

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2
Q

Mammary tissue start as buds and grow into?

A

Ectodermal ridges

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3
Q

In the fetus, when do mammary buds develop? And when do ducts start forming?

A

Mammary buds: 75 days gestation
Ducts: 100 days gestation

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4
Q

At birth what 3 aspects of the mammary are developed/present?

A

Teats
Rudimentary duct
Canalized secondary ducts

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5
Q

During early gestation, what part of the cows mammary tissue develops?

A

Ductal growth and development

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6
Q

What 3 changes do we see in the mammary tissue of a cow at mid gestation?

A

Cistern growth (5-6 months)
Gland proliferation (5-7 months)
Secretory tissue replaces adipose tissue

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7
Q

What 2 changes do we see in the mammary tissue of a cow at late (6-9 months) gestation?

A

Secretory tissue, vascular and lymphatic proliferation
Secretory activity starts at 9 months

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8
Q

How many teats and ducts per teat do pigs have?

A

~ 14 teats 2 ducts per gland

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9
Q

How many teats and ducts per teat do dogs have?

A

10 teats with (4-12 ducts per gland)

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10
Q

How many teats and ducts per teat do cats have?

A

8 teats and 4-12 ducts/gland

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11
Q

How many teats and ducts per teat do primates have?

A

2 teats with ~16 ducts/teat

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12
Q

How many teats and ducts per teat do cows have?

A

4 teats with 1 duct per teat

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13
Q

How many teats and ducts per teat do sheep have?

A

2 teats and 1 duct per gland

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14
Q

How many teats and ducts per teat do horses have?

A

2 teats with 2 ducts per gland

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15
Q

What do you call it when an animal has an extra teat?

A

Supernumerary teat or accessory teat

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16
Q

What are 2 lymph nodes associated with the mammary tissue?

A

Prefemoral/precrural lymph nodes and supramammary lymph node

17
Q

What veins are associated with the mammary tissue?

A

External and internal pudendal veins
Perineal vein
Superficial abdominal “milk” vein

18
Q

What nerves innervate the bulk of gland and teats?

A

L3 & 4 genito-femoral (somatic and autonomic)

19
Q

What nerve innervates the caudal surface teats for superficial sensation?

A

S2 & 3 (pudendal)

20
Q

What makes up the suspensory apparatus?

A

Medial and lateral laminae

21
Q

How many litres of blood flow is required per litre of milk?

A

500 L

22
Q

What is one major cause of enlargement of the supramammary lymph node?

A

Mastitis

23
Q

Anastomoses of what 2 things are associated with milk vein development?

A

Cranial and caudal superficial epigastrics

24
Q

Can you use the milk vein for vascular access?

A

No never!!!

25
Q

Why are the suspensory laminae technically not ligaments?

A

They do not connect to bone

Anatomy (5 decks)

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