The male reproductive system consists of internal and external organs that work together to produce, store, and deliver sperm. The internal organs include the testes, epididymis, vas deferens, seminal vesicles, prostate gland and bulbourethral glands. The testes produce sperm and testosterone. Sperm mature and are stored in the epididymis and vas deferens. During ejaculation, muscles contract and glands secrete fluids to expel the semen through the urethra and out of the penis. The main function of the male reproductive system is to produce sperm for fertilization and reproduction.
The female reproductive system provides several functions.
The ovaries produce the egg cells, called the ova or oocytes.
The oocytes are then transported to the fallopian tube where fertilization by a sperm may occur.
The fertilized egg then moves to the uterus, where the uterine lining has thickened in response to the normal hormones of the reproductive cycle.
Once in the uterus, the fertilized egg can implant into thickened uterine lining and continue to develop.
If implantation does not take place, the uterine lining is shed as menstrual flow.
In addition, the female reproductive system produces female sex hormones that maintain the reproductive cycle.
During menopause, the female reproductive system gradually stops making the female hormones necessary for the reproductive cycle to work. At this point, menstrual cycles can become irregular and eventually stop.
One year after menstrual cycles stop, the woman is considered to be menopausal.
The female reproductive system provides several functions.
The ovaries produce the egg cells, called the ova or oocytes.
The oocytes are then transported to the fallopian tube where fertilization by a sperm may occur.
The fertilized egg then moves to the uterus, where the uterine lining has thickened in response to the normal hormones of the reproductive cycle.
Once in the uterus, the fertilized egg can implant into thickened uterine lining and continue to develop.
If implantation does not take place, the uterine lining is shed as menstrual flow.
In addition, the female reproductive system produces female sex hormones that maintain the reproductive cycle.
During menopause, the female reproductive system gradually stops making the female hormones necessary for the reproductive cycle to work. At this point, menstrual cycles can become irregular and eventually stop.
One year after menstrual cycles stop, the woman is considered to be menopausal.
The female reproductive system is made up of the internal and external sex organs that function in reproduction of new offspring. In humans, the female reproductive system is immature at birth and develops to maturity at puberty to be able to produce gametes, and to carry a fetes to full term.
The male reproductive system includes the penis, scrotum, testes, epididymis, vas deferens, prostate, and seminal vesicles. The penis and the urethra are part of the urinary and reproductive systems.
This PPT covers Anatomy and Physiology of Male Reproductive System. It includes anatomy of male reproductive organs, spermatogenesis and hormonal regulation of testis
The female reproductive system is made up of the internal and external sex organs that function in reproduction of new offspring. In humans, the female reproductive system is immature at birth and develops to maturity at puberty to be able to produce gametes, and to carry a fetes to full term.
The male reproductive system includes the penis, scrotum, testes, epididymis, vas deferens, prostate, and seminal vesicles. The penis and the urethra are part of the urinary and reproductive systems.
This PPT covers Anatomy and Physiology of Male Reproductive System. It includes anatomy of male reproductive organs, spermatogenesis and hormonal regulation of testis
SEXUAL LITERACY RATES IN OUR SOCIETY ARE PATHETIC AS CHILDREN RECEIVE NO SEX EDUCATION OR THEY OBTAIN ALL THEIR SEX EDUCATION AS A MATTER OF FUN FROM ALL WRONG SOURCES.
Human reproduction is any form of sexual reproduction resulting in human fertilization. It typically involves sexual intercourse between a man and a woman. During sexual intercourse, the interaction between the male and female reproductive systems results in fertilization of the woman's ovum by the man's sperm.
The reproductive system is a collection of internal and external organs —in both males and females —that work together for the purpose of procreating.
Due to its vital role in the survival of the species, many scientists feel that the reproductive system is among the most important systems in the entire body.
The human body’s major systems, the reproductive system is the one that differs most between sexes, and the only system that does not function until puberty.
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3. Male Reproductive System
• Consists of a number sex organs that are a
part of the human reproductive process.
• Produces, stores and releases the male
gametes, or sperm.
4. MALE REPRODUCTIVE ORGANS
Internal Genital Organs
1. Testis
2. Epididymis
3. Vas Deferens
4. Accessory Glands
a. Seminal Vesicles
b. Prostate Gland
c. Bulbourethral Glands
8. Penis
The penis is the organ by
which the sperm is
introduced into the
female.
It contains spongy tissue
that becomes turgid and
erect when filled with
blood.
9. • Erectile Tissues
– Corpus spongiosum – is the
mass of spongy tissue which
surrounds urethra and involves in
erection by allowing rushing of
blood into it
– Corpus cavernosa – is one of a
pair of songe-like regions of
erectile tissue which contains
most of the blood in the penis
during penile erection
Cont...
10. • Urethra – a tube within the
penis that conveys semen out
of the body during
ejaculation.
• Glans – the rounded, highly
sensitive head of the penis.
• Prepuce – a fold of skin,
covering the head of the
penis.
Cont...
11. Scrotum
A pouch of skin formed
from the lower part of the
abdominal wall.
The scrotum keeps the
testes at a temperature
slightly cooler than body
temperature.
13. Testis (plural testes)
The testes are the two-
oval shaped male organs
that produce sperm and
hormone testosterone.
14. Cont…
Each testis is made of
tightly coiled structures
called seminiferous
tubules.
Among tubules are cells
that produce
testosterone.
15. Epididymis
The epididymis is a tightly
coiled tubes against the
testicles.
It acts as maturation and
storage place for sperm.
Adult human testicle with
epididymis:
A. Head of epididymis,
B. Body of epididymis,
C. Tail of epididymis, and
D. Vas deferens
16. Vas Deferens (Ductus Deferens)
The vas deferens is a thin
tube that starts from the
epididymis to the urethra
in the penis.
They transport sperm
from the epididymis in
anticipation of ejaculation.
17. a. Seminal Vesicles
b. Prostate Gland
c. Bulbourethral Glands
These glands produce
nourishing fluids for the
sperms that enter the
urethra.
Accessory glands
18. Seminal Vesicles
The Seminal Vesicles are
sac-like structures attached
to the vas deferens at one
side of the bladder.
They produce a sticky
yellowish fluid that
contains fructose.
19. Prostate Gland
The Prostate Gland surrounds
the ejaculatory ducts at the base
of the urethra, just below the
bladder.
The Prostate Gland is responsible
for making the production of
semen, a liquid mixture of sperm
cells, prostate fluid and seminal
fluid.
20. Bulbourethral Glands (Cowper’s gland)
The Bulbourethral Glands are
two small glands located on
the sides of the urethra just
below the prostate gland.
These glands produce a clear,
slippery fluid that empties
directly into the urethra.
21. REVIEW:
• The main function of the Male Reproductive
System is to produce sperm cells and deliver
them to the female reproductive system.
• It consists of external and internal genital
organs which are essential for the continuous
reproduction of life.
22. SPERM• Function:
– To move and carry genetic
information to the egg.
• Structure:
– Head: The large head region of the
sperm that contains DNA.
– Midpiece: The narrow middle part
of the cell that contains
mitochondria.
– Tail: The wavelike motion of the
flagellum propels the sperm forward.
25. Process:
• Diploid cells that begin the process are located
near the outer wall of the tubules.
These cells multiply constantly by mitosis, and
each day about 3 million of them differentiate
into primary spermatocytes, the cells that
undergo meiosis.
26. • Meiosis I of a primary spermatocyte produces
secondary spermatocytes, each with the
haploid number of chromosomes (n=23).
The cells are still in their duplicated state, each
consisting of two identical chromatids.
Process:
27. • Meiosis II then forms four cells, each with the
haploid number of single-chromatid
chromosomes.
Process:
28. • A sperm cell develops by differentiation of
each of these haploid cells and gradually
pushed toward the center of the seminiferous
tubule.
From there, it passes into the epididymis, where
it matures, becomes motile, and is stored until
ejaculation.
Process:
29. EJACULATION
Ejaculation is the discharge of semen from the
penis.
During orgasm, the semen is forcefully expelled
from the body by strong muscular contractions of
sperm ducts.
31. Process:
• At the peak of sexual arousal, muscles in the
epididymis, seminal vesicles, prostate gland, and
vas deferens contract.
At the same time, a sphincter muscle at the base of the
bladder contracts, preventing urine from leaking into
the urethra from the bladder.
Another sphincter also contracts, closing off the
entrance of the urethra into the penis.
32. • In the second stage of ejaculation, the
expulsion stage, the sphincter at the base of
the penis relaxes, admitting semen into the
penis.
Simultaneously, a series of strong muscle
contractions around the base of the penis and
along the urethra expels the semen from the
body.
Process:
33. REVIEW:
The pathway of the sperm in the male
reproductive system are the following:
(arrange in chronological order)
Testes Epididymis
Vas
Deferens
Ejaculatory
Duct
Urethra