Reproductive System and STDs: A Comprehensive Overview

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1.) Difference between primary and secondary sex characteristics:

The primary are the sexual organs which are born with and the secondary are the physical characteristics developed during puberty

2.) Reproduction:

Is the creation of new individuals

3.) Explain the journey of sperm to the ovum:

After been secreted by the penis through the urethra, the sperm go from the vagina to the uterus, Then, they divide in 2 groups and go to each fallopian tube. If there’s an ovum, one of these single sperm will fertilize it, and they will form a zygote, divides and becomes a morula and later a blastocyst. On the 7 days, the blastocyst implants in the endometrium








Reproductive tract

Epididymis, urethra

Fallopian tubes, uterus, vagina

-Copulation organs



Accessory glands

Seminal vesicles, cowper’s glands, prostate

Mammary glands




5.) These changes are caused by hormones produced by the pituitary gland, and the ovaries, changes occur simultaneously in the ovaries and in the uterus

6.) Placenta, umbilical cord, ambriotic sac, bladder, spinal cord, embryo, rectum, vagina

7.) Calendar-based, barrier, chemical (hormonal IUD), contraceptive pills, spermicides, surgical

8.) –Birth:

The time when a baby comes out of its mother’s baby

-Navel: a rounded knotty depression in the centre of a person’s belly caused by the detachment of the umbilical cord

-Zygote: a diploid cell resulting from the fusion of two haploid gametes, a fertilized ovum

-Blastocyst: a mammalian blastula in which some differentiation of cells has occurred

Sexuality transmitted disease

Are caused by microorganisms that are transmitted by sexual contact

-Bacterial: syphilis and gonorrhea

-Viral: genital herpes, papilloma virus, infection, hepatitis and AIDS

-Fungal: vaginal thrush and multiple forms of contagion

-Contact with skin lesion


-Body fluids: ex: semen, saliva, blood

The presence of symptoms in the genital area can signal an STD:

-Whitish secretion: from the penis, or vagina, as in gonorrhea

-Ulcerous lesion, as in genital herpes and syphilis

-Wart-like lesion: as in papilloma viral infection

-Pain, itching and soreness in the genitalia or when urinating, these symptoms may appear with fever, loss of appetite or tiredness

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