Bovine Udder

Question 1

Glands

Answer 1

4 (quarters)
Left and held right separated by medium septum
No sharing of blood from left to right
Quarters on same side share vasculature
One teat=one quarter

Question 2

Alveolus

Answer 2

Simple columnar/cuboidal epithelium

Milk production

Question 3

Lobule

Answer 3

Group of alveoli surrounded by connective tissues

Question 4

Lobe

Answer 4

Group of lobules surrounded by connective tissues

Question 5

Ducts

Answer 5

Productively larger anasatamosing duct system

Contributes to milk production

Question 6

Myoepithelial Cells

Answer 6

“Basket Cells”
Surrounded by alveoli and ducts
Stimulated to contract by oxytocin
✨Releases milk into cisterns

Question 7

Duct System empties into _____

Answer 7

Gland cistern

Expands

Question 8

Gland cistern empties into _____

And is filled by _____

Answer 8

Teat cistern

Duct System

Question 9

Milk from teat cistern empties via ____

And is filled by _____

Answer 9

Streak canal

Gland cistern

Question 10

Streak canal is usually closed by

Answer 10

Epithelial folds and muscular sphincter

Question 11

Teat

Answer 11

External opening of streak canal

Supernumory teats are extra but still produce milk (5 instead of 4 on an udder)

Question 12

Suspensory apparatus

Answer 12

2 medial laminae

Lateral laminae

Question 13

Udder can weigh up to

Answer 13

120lbs

Question 14

Blood Supply:

External Pudenal Artery

Answer 14

Passes through inguinal ring

Question 15

Blood Supply:

External Caudal and Pudenal Epigastric Veins

Answer 15

Milk vein

Passes through foramen in abdominal cavity wall