https://t.me/neetwallahpw
HUMAN REPRODUCTION
1 INTRODUCTION
• Humans are sexually reproducing viviparous organisms • Primary sex organs - Site for gamete formation
• Reproductive system is composed of • External genitalia - Involved In copulation
C
2 THE MALE REPRODUCTIVE SYSTEM
I
• Location: Pelvic region
Accessory glands Exter
S
• Seminal plasma from these Seminal vesicle (1 pair) Parts Fea
contains fructose,
calcium, enzymes Prostate gland (one) Urethra Orig
Y
the
• Its secretions Bulbourethral Special tissues Hel
L
lubricate the penis gland (1 pair)
H
Glans penis Enla
L
• Vas deferens receives a fore
duct from seminal vesicle
and opens into the
P A
urethra as the
Ejaculatory duct
3 FEMALE REPRODUCTIVE SYSTEM
W
Parts of Fallopian tube
• Location: Pelvic region Uterine
Uterine cavity Isthmus Last part of oviduct • Uterine wall co
fundus Narrow lumen
Accessory ducts
Joins the uterus • Endometrium - Li
• Oviduct/fallopian tube during menstruat
Ampulla - Wider part
• 10-12 cm (length)
Infundibulum - Funnel shaped • Myometrium - Th
• Extend from ovary
to uterus Fimbriae - Finger like during delivery
projections that collect
Ovary • Perimetrium - Ext
• Uterus/womb ovum after ovulation
• Inverted pear shaped Cervix
• Attached to pelvic wall Cervical canal Birth
by ligaments Vaginal canal canal
• Vagina
, https://t.me/neetwallahpw
4 PRIMARY SEX ORGANS
Parameters Male Femal
Testis Ovary
Organ
Number 2 2
Oval Almond
Shape
Location Outside abdominal cavity Lower a
in s pouch called scrotum
Dimensions Length 4-5 cm, Width 2-3 cm Length
C
Thin ep
I
Covering Dense connective tissue (outermost)
S
Functions Sperm formation; synthesise steroidal testicular Ova fo
hormones like androgens hormo
Y
250 testicular lobules; Periph
Compartments
1-3 coiled seminiferous tubules/lobule strom
H L L • Scrotum helps in m
P A
• Cells lining the seminiferous tubules Functions
than body tempera
1. Male germ cells/spermatogonia Sperm formation • Interstitial spaces o
immunocompeten
2. Sertoli cells Provide nutrition to the germ cells
• Ovary is connected
W
5 GAMETOGENESIS
• Process of gamete formation
Parameters Male
• Term Spermatogenesis
• Process begins At puberty During
• Ploidy & number of chromosomes
2n = 46 Male germ cells/ Mitosis & F
Spermatogonia differentiation
2n = 46 Primary spermatocytes
Periodic
Meiosis I
HUMAN REPRODUCTION
1 INTRODUCTION
• Humans are sexually reproducing viviparous organisms • Primary sex organs - Site for gamete formation
• Reproductive system is composed of • External genitalia - Involved In copulation
C
2 THE MALE REPRODUCTIVE SYSTEM
I
• Location: Pelvic region
Accessory glands Exter
S
• Seminal plasma from these Seminal vesicle (1 pair) Parts Fea
contains fructose,
calcium, enzymes Prostate gland (one) Urethra Orig
Y
the
• Its secretions Bulbourethral Special tissues Hel
L
lubricate the penis gland (1 pair)
H
Glans penis Enla
L
• Vas deferens receives a fore
duct from seminal vesicle
and opens into the
P A
urethra as the
Ejaculatory duct
3 FEMALE REPRODUCTIVE SYSTEM
W
Parts of Fallopian tube
• Location: Pelvic region Uterine
Uterine cavity Isthmus Last part of oviduct • Uterine wall co
fundus Narrow lumen
Accessory ducts
Joins the uterus • Endometrium - Li
• Oviduct/fallopian tube during menstruat
Ampulla - Wider part
• 10-12 cm (length)
Infundibulum - Funnel shaped • Myometrium - Th
• Extend from ovary
to uterus Fimbriae - Finger like during delivery
projections that collect
Ovary • Perimetrium - Ext
• Uterus/womb ovum after ovulation
• Inverted pear shaped Cervix
• Attached to pelvic wall Cervical canal Birth
by ligaments Vaginal canal canal
• Vagina
, https://t.me/neetwallahpw
4 PRIMARY SEX ORGANS
Parameters Male Femal
Testis Ovary
Organ
Number 2 2
Oval Almond
Shape
Location Outside abdominal cavity Lower a
in s pouch called scrotum
Dimensions Length 4-5 cm, Width 2-3 cm Length
C
Thin ep
I
Covering Dense connective tissue (outermost)
S
Functions Sperm formation; synthesise steroidal testicular Ova fo
hormones like androgens hormo
Y
250 testicular lobules; Periph
Compartments
1-3 coiled seminiferous tubules/lobule strom
H L L • Scrotum helps in m
P A
• Cells lining the seminiferous tubules Functions
than body tempera
1. Male germ cells/spermatogonia Sperm formation • Interstitial spaces o
immunocompeten
2. Sertoli cells Provide nutrition to the germ cells
• Ovary is connected
W
5 GAMETOGENESIS
• Process of gamete formation
Parameters Male
• Term Spermatogenesis
• Process begins At puberty During
• Ploidy & number of chromosomes
2n = 46 Male germ cells/ Mitosis & F
Spermatogonia differentiation
2n = 46 Primary spermatocytes
Periodic
Meiosis I
