Join Now: https://join.hsslive.in/group Downloaded from www.Hsslive.in ®
, Join Now: https://join.hsslive.in/group Downloaded from www.Hsslive.in ®
SECOND YEAR ZOOLOGY – CHAPTER WEIGHTAGE
SCORE
UNIT CHAPTER
WEIGHT
3 HUMAN REPRODUCTION 6
VI
4 REPRODUCTIVE HEALTH 3
PRINCIPLES OF INHERITANCE AND
5 7
VARIATION
VII 6 MOLECULAR BASIS OF INHERITANCE 8
7 EVOLUTION 4
8 HUMAN HEALTH AND DISEASE 6
VIII
10 MICROBES IN HUMAN WELFARE 2
X 15 BIODIVERSITY AND CONSERVATION 3
DR. SUNIL KUMAR. S, GFVHSS CHERUVATHUR, PH: 9495824297 2
, Join Now: https://join.hsslive.in/group Downloaded from www.Hsslive.in ®
Chapter - 3
HUMAN REPRODUCTION
MALE REPRODUCTIVE SYSTEM
Primary sex organ Accessory ducts Accessory gland External genitalia
A pair of Testes Rete testis Seminal Vesicles Penis
Vasa efferentia Prostate gland
Epididymis Bulbourethral glands
Vas deferens
Ejaculatory duct
MALE REPRODUCTIVE SYSTEM
The male reproductive system includes a pair of testes, accessory ducts, glands and external genitalia.
TESTES
• Testes are situated outside the abdominal cavity within a pouch called scrotum.
• Scrotum helps to maintain a low temperature (2 – 2.5oC lower than the internal body temperature)
essential for spermatogenesis
• Each testes internally contains about 250 compartments, called testicular lobules.
• Testicular lobule contains one to three highly coiled seminiferous tubules.
• Seminiferous tubules internally contain two types of cells
1. Spermatogonia or Male germ cells - Produce sperms or male gametes.
2. Sertoli cells - Provide nutrition to the germ cells.
• Leydig cells or Interstitial cells found between the seminiferous tubules secrete testicular hormones
called androgens.
ACCESSORY DUCTS
• It includes rete testis, vasa efferentia, epididymis, Vas deferens, and ejaculatory duct.
• Ejaculatory duct finally open into urethral meatus (external opening) through the urethra.
FEMALE REPRODUCTIVE SYSTEM
Primary sex organ Accessory ducts Accessory glands External genitalia
A pair of ovaries Fallopian tubes Mammary glands Mons pubis
Uterus Labia majora
Vagina Labia minora
Hymen
Clitoris
Ovaries
• Ovaries are the primary sex organs in females.
• Each ovary contains many ovarian follicles with developing ova.
• Matured follicle called graafian follicle breaks and releases the ovum by a process called Ovulation.
DR. SUNIL KUMAR. S, GFVHSS CHERUVATHUR, PH: 9495824297 3
, Join Now: https://join.hsslive.in/group Downloaded from www.Hsslive.in ®
SECOND YEAR ZOOLOGY – CHAPTER WEIGHTAGE
SCORE
UNIT CHAPTER
WEIGHT
3 HUMAN REPRODUCTION 6
VI
4 REPRODUCTIVE HEALTH 3
PRINCIPLES OF INHERITANCE AND
5 7
VARIATION
VII 6 MOLECULAR BASIS OF INHERITANCE 8
7 EVOLUTION 4
8 HUMAN HEALTH AND DISEASE 6
VIII
10 MICROBES IN HUMAN WELFARE 2
X 15 BIODIVERSITY AND CONSERVATION 3
DR. SUNIL KUMAR. S, GFVHSS CHERUVATHUR, PH: 9495824297 2
, Join Now: https://join.hsslive.in/group Downloaded from www.Hsslive.in ®
Chapter - 3
HUMAN REPRODUCTION
MALE REPRODUCTIVE SYSTEM
Primary sex organ Accessory ducts Accessory gland External genitalia
A pair of Testes Rete testis Seminal Vesicles Penis
Vasa efferentia Prostate gland
Epididymis Bulbourethral glands
Vas deferens
Ejaculatory duct
MALE REPRODUCTIVE SYSTEM
The male reproductive system includes a pair of testes, accessory ducts, glands and external genitalia.
TESTES
• Testes are situated outside the abdominal cavity within a pouch called scrotum.
• Scrotum helps to maintain a low temperature (2 – 2.5oC lower than the internal body temperature)
essential for spermatogenesis
• Each testes internally contains about 250 compartments, called testicular lobules.
• Testicular lobule contains one to three highly coiled seminiferous tubules.
• Seminiferous tubules internally contain two types of cells
1. Spermatogonia or Male germ cells - Produce sperms or male gametes.
2. Sertoli cells - Provide nutrition to the germ cells.
• Leydig cells or Interstitial cells found between the seminiferous tubules secrete testicular hormones
called androgens.
ACCESSORY DUCTS
• It includes rete testis, vasa efferentia, epididymis, Vas deferens, and ejaculatory duct.
• Ejaculatory duct finally open into urethral meatus (external opening) through the urethra.
FEMALE REPRODUCTIVE SYSTEM
Primary sex organ Accessory ducts Accessory glands External genitalia
A pair of ovaries Fallopian tubes Mammary glands Mons pubis
Uterus Labia majora
Vagina Labia minora
Hymen
Clitoris
Ovaries
• Ovaries are the primary sex organs in females.
• Each ovary contains many ovarian follicles with developing ova.
• Matured follicle called graafian follicle breaks and releases the ovum by a process called Ovulation.
DR. SUNIL KUMAR. S, GFVHSS CHERUVATHUR, PH: 9495824297 3
