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Hi Assalamualaikum Warahmatullahi
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Wabarakatuh How are you, little brothers and sisters, are you
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still enthusiastic in this new school year?
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After the previous meeting, we
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have learned about cell division,
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now it's time to go into our reproductive organs,
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starting from men first. Why do
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we have to study material about
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reproductive organs? Besides, little brothers and sisters can
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know the structure, function and
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processes that occur in it.
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It is also hoped that you can take
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good care of the reproductive organs that you
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have, both in terms of health or
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cleanliness. Before starting, press the
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like subscribe button and turn on the
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Hi, this time we will
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group the material into two, namely
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male reproductive organs and spermatogenesis or the
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process of sperm formation.
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Male reproductive organs are divided into two
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parts, namely external
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or external reproductive organs and internal
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or internal reproductive organs. External reproductive organs
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consist of the penis and scrotum. Inside the
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penis there is a urethra where
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urine and sperm come out, while the
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scrotum is a sac containing the
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testicles. This means that the scrotum plays a role
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as a protector of the testicles, one of which is
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by maintaining the temperature of the testicles so that the
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sperm inside them does not
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experience damage. For
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male internal reproductive organs, it consists of the
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testicles, epididymis, vas deferens, and
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sex glands such as seminal vesicles,
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prostate and bulbo urethralis or
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cowper's glands, we will discuss them one by one,
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yes, testes, testes function to
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produce sperm, like the testes
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are sperm factories, sperm can be
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formed because in the testes there
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are many fine vessels
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called seminiferous tubules, in the
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seminiferous tubules there are
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spermatogonia which are sperm stem cells
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in the process of fermat onogenesis
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In addition, in the seminiferous tubules
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there are 2 other types, namely
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sertoli cells and leydig cells, sertoli cells
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function to provide food or
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nutrition for sperm, while the testicles
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play a role in producing testosterone,
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testosterone is a hormone that plays an
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important role in the
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male reproductive process and also to
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bring out secondary sexual characteristics
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in men, including the appearance of a mustache, beard
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man's body, the voice becomes deep and the chest
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becomes broad, continuing to the second internal organ,
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namely the epididymis, the epididymis is
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close to the testes, its function is to
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temporarily store sperm and for
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sperm maturation after being formed in the
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testes, the vas deferens
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is shaped like a long channel
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originating from the epididymis, the vas deferens
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is likened to a highway because
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its job is only to channel sperm
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to the seminal vesicles
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the fourth internal organ is the
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sex glands there are three male sex glands
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namely the seminal vesicles which function to
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provide nutrition to sperm the
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prostate gland which is located below
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this surrounds the upper part of the urethra
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functions to secrete a thin
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white fluid to increase the volume of
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semen which can protect sperm from
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pressure on the urethra one more there is the
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bulbo urethral gland or
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also called the cowper's gland this gland is
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function of the cowper's gland is to
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produce a clear, thick,
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alkaline fluid into the urethra to
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help lubricate the urethra so that
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sperm can pass through after you
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know the male reproductive organs
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Now we will study the process of
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sperm formation called
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spermatogenesis spermatogenesis begins
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when the sperm stem cell called the
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spermatogonium divides by mitosis
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to form primary spermatocytes then the
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primary spermatocytes will undergo
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meiosis 1 division to produce
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secondary leukocytes still remember mitosis
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and meiosis in the previous material
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the number of chromosomes during mitosis does not
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change or remains 2N read as
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diploid While the number of chromosomes during
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meiosis is reduced by half
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to n or haploid after the
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secondary spermatocyte is formed, it then
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divides again by meiosis 2 to form
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four spermatids. The spermatids will
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experience structural changes to form
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spermatozoa or sperm. Their shape is similar
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to a tadpole. Yes, that is the process of
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spermatogenesis that occurs in men.
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In one spermatogenesis,
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four sperm cells will be produced in one
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day. The testes will produce 200 to
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300 million sperm. Wow, that's a lot. The
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permatogenesis process lasts from
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man's lifetime. Okay, little brothers and sisters, for
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the information about male reproduction, it's
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finished. Wait for the continuation of the video about
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female reproduction, see you later.
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Wassalamu'alaikum warahmatullahi
