The Reproductive System
The reproductive system occurs in both male and female.
Like in plants it is the male gamete that needs to be transferred to
the female gamete. The female gamete is fertilised and develops inside
the mother’s body so the reproductive systems of both males and
females are highly adapted for this.
Production of sperm is called spermatogenesis.
It occurs at puberty and for the rest of there life.
It takes place in the gonads of the male - the testes. Over 100
million can be made in one day!
Each testis is composed of numerous tiny tubes called seminiferous
tubules. It is in the walls of these tubules that sperm production
actually takes place.
Development begins in the outer side of the wall in a layer of cells
called the germinal epithelium. As the immature sperm cells become
more mature they move to the inner side and break way into the lumen
of the tubule to be carried away to the epididymis for storage. The
process of this production is shown in the next two diagrams.
In between the tubules, inside the testes, are interstitial cells
called Leydig cells. These secrete the hormone testosterone.
There are also blood vessels in close proximity, delivering nutrients
and carrying away some testosterone to other target cells for the
development and maintenance of secondary sexual characteristics, e.g.
facial and pubic hair, deepening of the voice. The testosterone also
stimulates the cells inside the testis involved in spermatogenesis.
Hormonal control of spermatogenesis
The control centres are the pituitary gland and the hypothalamus in
the brain.
The hypothalamus secretes GnRH ...
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...ation.
Then the level of oestrogen rises which actually stimulates the
release of LH and FSH.
A surge of LH: this causes ovulation and the development of the corpus
luteum. LH feeds back to inhibit oestrogen release so, as a result,
the levels of LH and FSH begin to fall.
The corpus luteum secretes progesterone: this stimulates the
thickening and the vascularisation of the uterus wall in preparation
for pregnancy...
A) If no pregnancy occurs: the corpus luteum degenerates, progesterone
is no longer released and the lining of the uterus breaks down. The
discharge of the wall is called menstruation. FSH release is no longer
inhibited so the cycle can begin again and a new follicle can develop
b) If pregnancy occurs: the corpus luteum persists due to a hormone (CG
- chorionic gonadotrophin) being released.
The testes produce sperm and sex hormones, testosterone. Surrounding each testis is a coiled tube called the epididymis, which collects and stores sperm, very much similar to that of a human. Before ejaculation a seminal fluid is added by the seminal vesicles, to prevent the sperm from drying out.
The follicular phase (Days 6 through 14) is the outcome of the ovarian cycle, and the menstrual preovulatory phase. During this phase the ovaries glands are maturing. In the follicular phase the process of the cells, glands and organs of the luteinizing hormone (LH), the follicle stimulating hormone (FSH) and oestrogen enables the maturation of the cavities, glands and sacs in the ovaries positioned through the womb to produce egg fertilization (Freudenrich 2014). In the middle of the cycle the egg that’s fertilized sends an cue or indication through the Luteinizing hormone and the Follicle stimulating hormone signaling the eggs produced in the female reproductive system to release the fertilize eggs. In which this is where the eggs travels through the fallopian tube and where it has a chance of merging with sperm in which this is the act of
It is in fact the case that researchers and scientists use gendered language when discussing eggs and sperm. Emily Martin has researched this phenomenon and discussed the implications that can occur. In her paper, “The Egg and the Sperm: How Science Has Constructed a Romance Based on Stereotypical Male-Female Roles”, Martin shed light on the way eggs and sperm are discussed in the science field. She described sperm being discussed as dominant, forceful, and active while eggs were labeled passive, submissive and a damsel in distress. New research has discovered that contrary to popular belief, sperm’s thrust in the egg is actually weak. Rather than forcefully penetrating the egg, the sperm moves
The main difference between male and female primates is that female primates are the ones who conceive an offspring. If primate males were the ones to conceive, then the roles would be completely different. There are two different reproduction strategies the male and female follow in the primate world. The male strategy would be to always be ready and wanting to mate, so he can maximize reproductive success. The female reproductive strategy would be to make males compete for her and also to select a quality male (Male with territory and/or ability to protect her and her offspring). Another female reproductive strategy that will benefit her is, sneaky copulation because it creates a confused paternity so, if the transient male takes over the group the offspring will not be killed. The male parental investment is fairly low; mostly all the male does is just give the sperm to the female and take off onto seeking another mate. As for the female parental investment, it’s extremely high; because she must grow the offspring in her body, give birth, nurse and raise the young. The factors of limiting male’s reproductive success would be female access and competition with another male. As for the factors of limiting female’s reproductive success would be food resources, and a predator free space. The male strategies maximize reproductive success because, with males spending less time on parental investment they can seek more mating opportunities; for a chance the female will take care of the offspring so that his genes can be passed on. Another way males maximize their reproductive success would be to eliminate all unfertile females from their mating because there is no way that the male genes could be passed on. Females use their strategy ...
The reproductive system is a group of organs that work together to make a new life. Most organs of the reproductive system are the external genitalia and the internal organs, including gonads that produce gamete. The external genitalia are found in the pelvis and vulva and gonads are testicles and ovaries. The female reproductive organs are found inside of the pelvis and most of the male reproductive organs are found outside the body. Most of the organ of a male reproductive system is the penis and a female is the vagina.
From here, the reproductive system leads into the female, with the semen being inserted. It fertilizes the egg and then a baby is born.
The Reprodructive system or genital system is a system of sex organs within an organism which work together for the purpose of sexual reproductive. A human has 46 chromosomes in each cell except sex cells. A person recieve 23 chromosomes from the mother and 23 chromosomes from the father . The mother has X chromosome and the father has Y chromosome . XY chromosomes are also found in other mammals , some insects and some plants . Now let’s talk about the male reproductive system. The male reproductive system consists two major parts which are testes and penis . The spermatozoa (sperm) includes four main parts of the male body which are the penis , uretha , vas defences , and cowper’s gland . Testes is where the sperm
Reproduction is integral to the longevity and evolution of all species, hence the urgency of sexual reproduction. According to Olivia Judson in Dr. Tatiana's Sex Advice to All Creation promiscuity amongst females is rampant—not only because sex is pleasurable—but for survival. "Boys are promiscuous and girls are chaste, right? Wrong. The battle of the sexes erupts because, in most species, girls are wanton." (Judson, 2002, p. 9). In fact, female promiscuity determines the evolution of males because if the males spend all their time with females who has no intentions of using their sperm, their genes will not be passed on; and there will be a lack of diversity within the species. When it comes to sexual reproduction and finding a mate, there is no standard agreement on monogamy. Species like the harlequin-beetle-riding pseudoscorpions or the stalk-eyed flies are unashamedly licentious but few remain with one partner. More so, Judson discusses an important point about the compatibility of partners. "Females who mate with two different males are more likely to have children than females who mate with the same male twice." (Judson, 2002, p. 52). In other words, mating with more than one partner secures reproduction.
The Female Reproductive System parts are gametes, which is a mature haploid male or female germ cell that is able to unite with another of the opposite sex in several reproductions to form a zygote. Egg is a person possessing a specified quantity. Ovum is a mature female reproductive cell especially of a human or other animal that van divide to give rise to an embryo usually only after fertilization by a male cell. Vaginal is a muscular tube leading from the external genitals to the cervix of the uterus in women and most female mammals. Labia is the inner and outer folds of the vulva, at either side of the vagina. Clitoris is a small sensitive and erectile part of the female genitals at the anterior end of the vulva. Urethra is a duct by which urine is convey out of the body from the bladder and which in male vertebrates also conveys semen. Hymen is a membrane that partially closes the opening of the vagina and whose presence is traditionally taken to be a mark of virginity. Uterus is the organ in the lower body of a women or female mammal where offspring are conceived and in which they gestate before birth; the womb. Cervix is a narrow like passage forming the lower end of the uterus. Fallopian tube is either of a pert of tubes along which eggs travel from the ovaries to the uterus. Ovary is a female reproductive organ in which ova or eggs are produces, present in humans and other vertebrates as a pair. Estrogen is a group of steroid hormones that promote the development and maintained of female characteristics of the body. Progesterone is a steroid hormone released by the corpus lutetium that stimulates the uterus to prepare for pregnancy. The Male Reproductive System parts are testes, which is an organ that produces spermatozo...
The skeletal system helps with endocrine regulation, protection, support, movement, calcium storage, and blood cell production. The skeletal system consists of 206 bones, in the adult human body, all of which are divided into two major divisions. One division, the axial skeleton made up from 80 bones, runs along the body’s midline and the other division, the appendicular skeleton which has 126 bones.
These first lines of Mina Loy’s poem “Parturition” indicate the way in which the poet distin-guished herself from other (male) modernist poets: “I am”, writes Loy, and puts a woman in “the centre” of her poem – a poem which has a distinctly female experience as its topic, childbirth. As modernism was a male-dominated literary movement, the experiences of women were largely disregarded but Loy aimed to give the “new woman” a voice and “pre-sented a new female perspective”. In 1914, Loy wrote her “Feminist Manifesto” that speaks out against the inferior position of women in society and stresses the importance of the aban-donment of the traditional view on women. Loy supported her position through her poetry in which she objected the position of women in a male-centred society and presented a new
The male reproductive system is a set of organs that works together to produce sperm which will later in life fertilize females eggs. The testes are the most important part of the system because it produces sperm cells. It is similar and looks similar to ovaries of a female’s reproductive system because it also holds what they need to reproduce. Its job is to produce the sperm cells needed to reproduce. Due to hormonal imbalances the production of sperm cells may not even be possible in some males. Testosterone is the male the hormone that gives men there manly characteristics. It is made up of hydrogen, carbon, and oxygen with a white color. In the male body it helps develop sex organs, a deeper voice, and facial hair (Khalid, 2013). Cancer or a genetic disorder in males is the most common thing that cause the reductions of testosterone production in the body. Behind the testes is the epididymis which lets sperm go through the vas deferens from the testes (Dictionary, 2014). It looks like leach the way it is position right on the testes but it is thinner. When sperm is produces the ...
The reproductive system is the part of the human body that is necessary to continue the human existent. Reproduction in humans normally would begin by a male and female having sexual intercourse with each other.
The human body is very complex. It is like a job. You have to do a million things in one day to make it through the day. The body uses nine systems to do all of those jobs. They all have separate functions, but some work together. Each system is also made up of organs. There are many ways to care and protect the systems from the many different problems they can have. There are also many interesting facts about each system.
The reproductive systems are based off of the goal to create offspring. Both the male and the female reproductive systems, although fueled by a similar goal, have different components and structures. Both systems are very complex in their own way, making it important for one to understand how each of the systems and their various processes work. Knowing the processes and components of the male and female reproductive systems will aid all people in their life, sometime or another. It’s important to understand how our individual bodies work and how life is produced.