The mammary gland (External features) Flashcards

1
Q

The mammary gland descreption

A

modified skin gland ( no hair , sweat , sebaceous gland ) classified as exocrine glands

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The mammary gland Function

A

secrete milk for the nourishment of the young

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

External features

A
  1. Median SL
  2. Fine membrane
  3. Extra teat
    4.Teat size and shape
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Internal features

A
  1. Ducts and secretory system
  2. Supportive structures 3
  3. Blood + Lymph + nerve
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Internal features

A
  1. Ducts and secretory system
  2. Supportive structures 3
  3. Blood + Lymph + nerve
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

mammary glands num

A

4 mammary glands (one teat in every quarter)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

right and the left mammary glands halves are clearly separated by ….

A

Median suspensory ligament (inside intramammary groove)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

front and rear mammary glands quarter separated by …

A

thin Fine membranes
that not recognizable externally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

When viewed from the side
The floor of the udder is ….

A

strongly attached to the abdominal wall

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

The cow udder weighs about …. Kg

A

11 and 27 kg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

cow udder when full of milk weighs over … Kg

A

60 kg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The size of udder and productivity correlation

A

The size of udder has little correlation with productivity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Which quarters are larger ?

A

Rear quarters are larger than fore quarters and secrete about 60% of the daily milk yield

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which teats are longer ?

A

Fore teats are longer than Rear teats

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Cows with long teats require …

A

more time to milk than cows with short teats

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Extra (supernumerary) teats %

A

in 25% - 50% of all cows

17
Q

Extra teats should be removed during ….

A

Calf hood ( 2 - 6 weeks of age)

18
Q

Extra teats position

A

Posterior to rear teat

19
Q

Extra teats has no …

A

streak canal , has no connection to internal of udder (may or may not)

20
Q

Extra teats disadvatages

A
  • Detraction of appearance
  • Interfere with milking by milking machine
  • Source of bacteria
  • May cause mastitis
21
Q

Fore teat length & diameter

A

Fore teat length 6.6 cm , diameter 2.9 cm

22
Q

Rear teat length & diameter

A

Rear teat length 5.2 , 2.6 diameter

23
Q

Teats shape

A

Cone shape (Pointed)
Cylindrical (Flat tip)

24
Q

… teats are said to be less prone to mastitis and are the most common

A

Cylindrical

25
Q

Pointed teat less or more susceptible to mastitis ?

A

More

26
Q

MSL seen externally ?

A

Yes

27
Q

There is clear separation bet. Fore and rear quarters externally ?

A

No