Sexual Reproduction in Humans -I

8/8/2019 Sexual Reproduction in Humans -I

1/18

1

Sexual Reproduction in

Humans

- AshishSharma

Chapter I

Reproduction Systems


2/18

2

Human sexual reproduction

involves

Human male reproductive system

Human female reproductive system

Spermatogenesis Oogenesis

Fertilization

Embryonic development


3/18

3

Human

Reproductive

system

Secondary

reproductive

organs

Sec. sexual

characters

Males-prostate gland,

seminal vesicles

vasa defferentia,

penis

Females-fallopian

tubes,uterus,vagina,

mammary glands

Males-muscular built

,moustache,hairy

coarse skin etc.

Females-less

muscular,

high pitch,

lower BMR

1.Gonads

2.repd. Ducts

3.Accessory strucs.


4/18

4

Human reproductive system

Reproductive organs

Reproductive ducts

Accessory structures

Sec. reproductive organs

Sec. sexual characters


5/18

5

Male Reproductive System

Scrotum

Testes

Epididymes&vasa eff.

Vasa defferentia

Ejaculatory ducts

Urethra

Penis

Accessory sex glands


6/18

6

SCROTUM

Dark pigmented

pouch

Internally

Divided into2 sacs

Temp 2 deg. less

TESTES

3 Coverings

Testicular lobules

Seminiferous tubules


7/18

7


8/18

8

TESTES

Coverings

Testicular Lobules

(200-300)

Seminiferous Tubules

2-3 in each lobule Lined by germinal epith.

Tunica Vaginalis

T. Albuginea

T.Vasculosa


9/18

9

Testes

Rete testesVasa differentia

Epididymes

Network of

seminiferous tubules

2 tubulesarising from

Cauda epididymes

Stores sperms and

secrete nourishment


10/18

10

Other parts of male reproductive

system Ejaculatory ducts

Urethera

penis

2 tubes, arising fromseminal vesicles ,carry sperms &secretions

20 cm long, carriesurine and sperms

Copulatoryorgan,conducts urineand sperms


11/18

11

Accessory

sex glands

Seminal

vesicles-2

Prostate

Gland

Cowpers

Glands

Secrete fructose &prostaglandins

Secretes fluid

containing citric acid,some lipids

, few enzymes &

bicarbonate ions

Mucus


12/18

12

Human Female Reproductive

System

Ovaries

Fallopian tubes

Uterus

Vagina

External genitalia

Mammary glands


13/18

13

Parts of Female Reproductive System

Ovaries

Covered by

Germinal epith.

Functions

stroma

Outer cortex

Inner medulla

Shows developingfollicles & corpus

luteum & corpus

albicans

Attached to uterus

by ovarian ligament

Gametes production

Hormone production


14/18

14

Fal l

op

ian

du

cts

F

A

L

LO

P

I

AN

T

U

B

E

S

PARTS

Uterine part

Isthmus

Ampulla

Infundibullum

Within uterine wall

Lateral to uterine wall

Site of fertilization

Funnel like, has finger

like projections- fimbrie


15/18

15


16/18

16

U

T

E

RU

S

V

A

GI

N

A

Parts

Hollow muscular , pear shaped

Between urinary bladder & rectum

Fundus

Body

Cervix

Communicates with fallopian tubes

Harbours embryo

Communicates below with vagina

10 cm long

Provides passage for menstrual flow

Serves as receptacle for sperms

Outer opening vaginal orifice


17/18


18/18

18

This powerpoint was kindly donated to

www.worldofteaching.com

http://www.worldofteaching.com is home to over a

thousand powerpoints submitted by teachers. This is acompletely free site and requires no registration. Please

visit and I hope it will help in your teaching.

FreePowerpointPresentations
http://www.worldofteaching.com/http://www.worldofteaching.com/http://www.worldofteaching.com/http://www.worldofteaching.com/http://www.worldofteaching.com/http://www.worldofteaching.com/http://www.worldofteaching.com/http://www.worldofteaching.com/http://www.worldofteaching.com/http://www.worldofteaching.com/http://www.worldofteaching.com/

Documents

Sexual Reproduction in Humans -I