3. TYPES OF REPRODUCTIONS
A. Gametogenesis
B. Spermatogenesis
C. oogenesis
D. ovulation
E. fertilization
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4. GAMETOGENESIS
The process involved in the maturation of the two highly specialized cells, spermatozoon in male and ovum in
female before they unit to form zygote, is called gametogenesis
6. OVULATION :-
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Ovulation is a process whereby a secondary oocyte is
released from the ovary following ruptureof a mature
Graafian follicle and becomes available for
conception.
8. MENSTRUAL CYCLE :-
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The cyclic changes occurringin reproductive system of females of primate mammals is called
Menstrual cycle.
MENARCHE: -The first Menstruationbeginning at puberty.
MENOPAUSE:- Ceasing of Menstrual cycle in the age of 50s.
It is periodicallyrepeated on an average of 28/29 days.
9. TE INNER CELL MASS (EMBRYO) DIFFERENTIATES INTO THERE
LAYER:-
ECTODERM, MESODERM AND ENDODERM
1 month – heart is formed.
2 months – Limbs and digits are formed.
(First trimester) 3 months – major organ systems are formed.
5 months – appearance of hairs and the first movements of the foetus.
(Second trimester) 6 months – body is covered with fine hair, eyelids separate, eyelashes are formed.
9 months – foetus is fully developed.
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