Animal Breeding Fertalisation

Question 1

What is zona Pellucida?

Answer 1

Inner layer of ovum very tough membrane

Question 2

What dose the Acrosome on the sperm do?

Answer 2

Digestive protein is released here used to penetrate Ovum membrane

Question 3

What dose the Mitochondria on sperm do?

Answer 3

Release energy for moving and swimming

Question 4

Fertilisation takes place in?

Answer 4

Fallopian tubes

Question 5

What is an Ovum called once it is fertalised?

Answer 5

Zygoate

Question 6

When the first sperm penetrate corona radita and zona pellucida what happens?

Answer 6

Causes Fertilisation reaction

No other sperm can can penetrate ovum

The nucleus and ova fuse Miosis begins

Question 7

The morula develops a cavity with a cell mass towards one end of the structure called??

Answer 7

The inner cell mass cavity is lined with Trophoblasts

Eventually forms the embryo

Question 8

What are the 3 germ layers?

Answer 8

• Ectoderm
• Mesoderm
• Endoderm

Question 9

What dose the ectoderm layer do?

Answer 9

Becoms skin and nervous system

Question 10

There are 2 protective layers surrounding the Ovum what are they?

Answer 10

• Inner layer - Zona Pellucida

* outer layer - corona radita

Question 11

What dose the mesoderm layer do?

Answer 11

Becomes Musko skeletal system and internal organs

Question 12

What dose the Endoderm layer do?

Answer 12

Forms the lining of gastro intestinal track + other internal organs

Question 13

What dose the Allantosis layer do?

Answer 13

Involved in the exchange of gasses + handles liquid waste

Question 14

How long dose implantation take in a dog?

Answer 14

14-20 days after ovulation

Question 15

How long dose implantation take in the cat?

Answer 15

11-16 days after Ovulation

Question 16

What dose the extra Embryotic membrane consist of?

Answer 16

• yolk sac
• chorion
• Amnion
• Allantosis

Question 17

What is the Allantois?

Answer 17

The pouch sac (Deverticulum)

Question 18

What is the Urachus?

Answer 18

Canal that drains urinary bladder of the foetus

Question 19

The outer membrane of the pouch sac is called?

Answer 19

The chrion

Question 20

The inner membrane of the pouch sac is called?

Answer 20

The Amnion

Question 21

After pouch sac fuses the outer membrane is now called?

Answer 21

The Chario-allantosis

Question 22

After pouch sac has fused the inner membrane layer is now called?

Answer 22

Allanto amonion

Question 23

What is the function of the placenta?

Answer 23

Provides Embryo with oxygen, food and removes waste products

Question 24

There are narrow bands between placenta and extra-embryonic membrane are called?

Answer 24

Marginal Haematoma

Question 25

The fluid in the marginal Haematoma is responsible for the vaginal discharge at parturition how dose the cat and dogs differ?

Answer 25

Bitches - Green | Queens - Brown

Question 26

How many mammary glands do bitches, Queens and males have?

Answer 26

Bitches- 5pairs Queens- 4pairs Males - rudimentary teats

Question 27

During pregnancy mammary glands ??

Answer 27

Become active + enlarges towards end of pregnancy The hormone prolactin stimulates mammary secretions or milk