The mammary gland (Internal features)

Question 1

Internal features of the mammary gland

Answer 1

1. Supportive structure
2. Blood , Lymph , Nervous supplies
3. Duct and secretory system

Question 2

Supportive structure

Answer 2

1. Skin
2. Median SL
3. Lateral SL

Question 3

Skin

Answer 3

Protect from abrasion and bacteria it provides little support

Question 4

The major supporting structure of the udder

Answer 4

Median SL

Question 5

One of the main supporting structures

Answer 5

Lateral SL

Question 6

Median SL tissue type

Answer 6

Elastic tissue

Question 7

Lateral SL tissue type

Answer 7

Fibrous, non-elastic tissue

Question 8

Median SL arises from

Answer 8

The midline of the abdominal wall and extends between the udder halves

Question 9

Lateral SL extend ….

Answer 9

Extend along both side of the udder , send sheets of tissue into the gland

Extend to the midline of the floor of the udder and fuse with median SL

Question 10

Where does Median SL Join the lateral SL ?

Answer 10

Base of the udder

Question 11

Elasticity of the MSL is necessary to

Answer 11

allow the udder to increase in size as it fills with milk by expanding away from the body wall

Question 12

Lateral SL role

Answer 12

Provide support to the interior of the udder

Question 13

Since the lateral ligaments are non elastic and the median ligaments are elastic , the teat of some cows produce at an
….

Answer 13

oblique angle when the udder are distended with milk

Question 14

Rupture of the median suspensory ligament

Answer 14

1. Udder suspension loss of the cleavage between quarters
2. Teats to splay out wards making it difficult to attach the milking unit

It leads to air leakage during milking, and increasing mastitis risk

Question 15

Rupture of the Lateral suspensory ligament

Answer 15

Leads total drop of the whole udder (teats drop below hock level easily become injured as the cow walks)

Question 16

Pendoulous udder caused by

Answer 16

Rupture of both SL (Median & Lateral)

Question 17

Splaying of teats caused by

Answer 17

Rupture of the median ligament

Question 18

Rupture of the suspensory apparatus leads to

Answer 18

Pendoulous udder

Question 19

When quarter treated with antibiotic , should u discard milk from this Quarter only or from the udder as a whole ?

Answer 19

From the udder as a whole

Question 20

The udder is divided into halves by the … and each half into quarters by …

Answer 20

central ( median ) supporting ligament

a fine membrane

Question 21

Does transfer of milk occurs between quarters ?

Answer 21

Each quarter is separate and no transfer of milk occurs between quarters

Question 22

Each quarter is separate and no transfer of milk occurs between quarters , So . explain why when a cow treated in one quarter with antibiotics must be discarded milk from all quarters ?

Answer 22

Antibiotics can be transferred from one quarter to others through the extensive blood network through out the udder

The antibiotics may be absorbed from that quarter into the bloodstream, travel around the body and then be deposited back into untreated quarters

Question 23

Ligament allow expansion of the udder

Answer 23

Median SL

Question 24

Loss of cleavage occur due to rupture of ?

Answer 24

Median SL