Reproduction In Animals Flashcards
Reproduction
Reproduction is giving rise to new organisms of the same species for the continuity of life.
Mammals carry out what type of fertilization?
Internal fertilization
Reproduction is divided into…
Sexual and Asexual reproduction
How is a zygote formed?
From the Fusion of gametes
(Male and Female sex cells)
Gametogenesis
This is the formation of gametes
What does Gametogenesis involve?
Spermatogenesis and Oogenesis
What is Spermatogenesis regulated by in humans?
The testosterone
How many sperms are produced in a male?
Over 300 million
What group of cells produce sperm?
The Seminiferous tubules in the testes
Maturation of the ovule is controlled by?
F.S.H
The thickening of the uterine endometrium is controlled by?
Oestrogen
A mature Ovule goes from…
Ovary to the Oviduct
The Menstrual cycle can vary from?
23 to 35 days
On what day of the cycle does Ovulation occur?
The 14th day
What are the 4 hormones that controll Ovulation?
L.H and F.S.H (Pituitary gland)
Progesterone and Oestrogen (Ripening of the ovule)
How many days can sperm survive in female genital?
Up to 4 days
How many days can the female egg survive?
Up to 2 days
Mating
This is the bringing together of gametes, that is coitus or copulation.
It is the introduction of the male organ into the female genital tract.
Viviparity
This is the giving birth to young ones alive
Ovoviviparity
immature offspring that need to complete development outside the womb
