Oogenesis & Spermatogenesis

Question 1

Oogenesis

Answer 1

Production of ova, not continuous part of the menstrual cycle
-FSH is released stimulating one (or more) follicles to mature
-LH stimulates the now-mature follicles to produce more oestrogen and to inhibit the production of FH and FSH
-increase in oestrogen stimulates LH & FSH production which leads to ovulation

Question 2

Spermatogenesis

Answer 2

Production of sperm, continuous process
-LH stimulation production of testosterone
-sperm produced and mature, FSH and testosterone
-sertoli cells secrete inhibit, stops follicle stimulating hormone and spermatogenesis

Question 3

Stages of fertilisation

Answer 3

1. Copulation
2. Fertilisation
3. Implantation
4. Gestation
5. Parturition (birth)

Question 4

Copulation

Answer 4

Sexual behaviour, male introduces sperm into females body (directly into reproductive tract)

Question 5

Fertilisation

Answer 5

When the DNA from 2 gamete’s combines

Question 6

Implantation

Answer 6

When the fertilised egg attaches itself to the lining of the uterus

Question 7

Gestation

Answer 7

The length of time it takes from conception to birth

Question 8

Process of fertilisation

Answer 8

Gametes combine
Cells divide by mitosis
The blastocyst implants into the uterine wall

Question 9

Centric implantation

Answer 9

Delay between fertilisation and implantation, allows fertilised egg too grow to join the uterus lining without it embedding

Question 10

Gestation periods (rabbit,cat,dog,pig,cow)

Answer 10

Rabbit = 30-32 days
Cat = 61-72 days
Dog = 58-70 days
Pig = 114-115 days
Cow = 279-287 days