Human Reproduction and STIs Quiz

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Questions and Answers

What is the primary distinction between STIs and STDs?

  • STIs only include viral infections.
  • STIs are always more serious than STDs.
  • STDs refer to infections that are always symptomatic.
  • STIs is a broader term that includes infections that may not cause disease. (correct)

Which of the following are examples of curable STIs?

  • Herpes Simplex Virus and HPV
  • HIV and Hepatitis B
  • Trichomoniasis and HIV
  • Gonorrhea and Chlamydia (correct)

How do STIs typically spread between individuals?

  • Through airborne particles.
  • Via skin contact without bodily fluids.
  • Through bodily fluids like blood and semen. (correct)
  • Only during vaginal intercourse.

What defines asexual reproduction in flowering plants?

<p>It results in a clone of the parent plant. (B)</p> Signup and view all the answers

Which statement about sexual reproduction in plants is true?

<p>Cross-pollination can enhance genetic variation. (B)</p> Signup and view all the answers

What is the main purpose of hormonal contraception?

<p>To stop ovulation and thicken cervical mucus (D)</p> Signup and view all the answers

Which of the following is an example of a barrier method of contraception?

<p>Condoms (B)</p> Signup and view all the answers

What type of infections does the term STIs include?

<p>Infections caused by bacteria, viruses, or parasites (D)</p> Signup and view all the answers

Which of these sexually transmitted infections is curable?

<p>Chlamydia (C)</p> Signup and view all the answers

What is one of the ways STIs are transmitted?

<p>Through blood, semen, or vaginal fluids (A)</p> Signup and view all the answers

What triggers the body to recognize that it's time for birth?

<p>Hormones from the placenta and the baby's pituitary (A)</p> Signup and view all the answers

What occurs right after the baby takes its first breath?

<p>The umbilical cord is cut to minimize blood loss (D)</p> Signup and view all the answers

Which type of contraception specifically uses hormones to prevent ovulation?

<p>Hormonal contraception (B)</p> Signup and view all the answers

What happens to the placenta after birth?

<p>It separates from the uterus (C)</p> Signup and view all the answers

Which method of contraception creates an unfavorable environment for sperm?

<p>Unfavorable environment methods (D)</p> Signup and view all the answers

What role does testosterone play in male reproduction?

<p>It influences sperm motility and increases libido. (B)</p> Signup and view all the answers

Which gland produces the majority of the seminal fluid?

<p>Seminal vesicles (A)</p> Signup and view all the answers

What is the function of the prostate gland in semen production?

<p>It protects the sperm and helps it navigate the female reproductive system. (D)</p> Signup and view all the answers

Where does sperm first travel after being produced?

<p>Epididymis (B)</p> Signup and view all the answers

What is the role of Cowper's gland in the process of ejaculation?

<p>It produces mucus to clear the urethra. (B)</p> Signup and view all the answers

What occurs during the menstruation phase of the menstrual cycle?

<p>Blood and mucus are shed from the uterus. (D)</p> Signup and view all the answers

What is the primary hormone responsible for the peak during ovulation?

<p>Luteinizing hormone (LH) (D)</p> Signup and view all the answers

In which phase does progesterone rise and the endometrial lining thicken?

<p>Luteal phase (C)</p> Signup and view all the answers

Where are sperm produced in the male reproductive system?

<p>Testes (C)</p> Signup and view all the answers

What is the primary hormone produced during the follicular phase that stimulates the growth of eggs in the follicles?

<p>Follicle-stimulating hormone (A)</p> Signup and view all the answers

What occurs immediately after ovulation in terms of hormonal production?

<p>The corpus luteum secretes progesterone (A)</p> Signup and view all the answers

If fertilization does not occur after ovulation, what happens to the corpus luteum?

<p>It eventually stops producing hormones (C)</p> Signup and view all the answers

During which phase does the endometrium thicken in preparation for a potential pregnancy?

<p>Both follicular and luteal phases (A)</p> Signup and view all the answers

What role does progesterone play during the luteal phase?

<p>It helps the endometrium stay healthy and thickens it (D)</p> Signup and view all the answers

What is primarily developed during the second half of pregnancy?

<p>Existing body parts (C)</p> Signup and view all the answers

At what point in pregnancy can the baby's gender typically be determined using the H-y antigen test?

<p>10-12 weeks (C)</p> Signup and view all the answers

Which methods are used to detect genetic abnormalities during pregnancy?

<p>Amniocentesis and chorionic villus sampling (D)</p> Signup and view all the answers

What occurs just before the birthing process starts?

<p>Hormonal changes in the fetus (B)</p> Signup and view all the answers

Which of the following best describes premature babies at birth?

<p>They require incubators for support. (D)</p> Signup and view all the answers

How long does the average human pregnancy last?

<p>9 months (B)</p> Signup and view all the answers

What happens to the amniotic sac during birth?

<p>It ruptures and releases fluid. (B)</p> Signup and view all the answers

What is the physiological process that pushes the baby out during birth?

<p>Uterine contractions (B)</p> Signup and view all the answers

What is the main outcome of sperm fertilizing an egg?

<p>It creates a zygote with 46 chromosomes. (A)</p> Signup and view all the answers

In what scenario do identical twins occur?

<p>The zygote splits into two separate cells. (A)</p> Signup and view all the answers

What happens to the sperm's body after it fertilizes the egg?

<p>The rest of the sperm's body is discarded. (D)</p> Signup and view all the answers

What occurs during gene mixing in the zygote?

<p>Specific genes from both parents are activated or deactivated. (A)</p> Signup and view all the answers

Which structure develops from the blastocyst once it implants in the uterus?

<p>The placenta. (B)</p> Signup and view all the answers

What is the main advantage of sexual reproduction in plants?

<p>Allows for gene mixing (A)</p> Signup and view all the answers

Which part of the flower is responsible for producing pollen?

<p>Anther (D)</p> Signup and view all the answers

What is a characteristic of a flowering plant's calyx?

<p>It prevents the flower from drying out (B)</p> Signup and view all the answers

Which of the following statements is true about asexual reproduction in plants?

<p>It creates a clone of the parent plant (A)</p> Signup and view all the answers

What structure connects the main body of the plant to the flower?

<p>Stem (A)</p> Signup and view all the answers

What is the primary function of the androecium in flowering plants?

<p>To produce pollen and facilitate fertilization (D)</p> Signup and view all the answers

Which part of the gynoecium is responsible for the development of seeds after fertilization?

<p>Pistil (A)</p> Signup and view all the answers

What potential downside is associated with sexual reproduction in plants?

<p>Chance of unfavorable characteristics (A)</p> Signup and view all the answers

What significant change occurs once the blastocyst reaches the endometrium?

<p>The embryo starts to develop visible structures (B)</p> Signup and view all the answers

What is the primary function of the placenta?

<p>To support the exchange of nutrients and waste (D)</p> Signup and view all the answers

What is the purpose of the umbilical cord in fetal development?

<p>To carry the baby's blood to the placenta (B)</p> Signup and view all the answers

What prevents maternal and fetal blood from coming into contact?

<p>The thick membrane of the placenta (B)</p> Signup and view all the answers

During which period of pregnancy does the embryo become a fetus?

<p>After the first trimester (D)</p> Signup and view all the answers

What occurs midway through human pregnancy?

<p>Fetal development becomes finalized (D)</p> Signup and view all the answers

What type of flow does the placenta prioritize to enhance material exchange?

<p>Counter-current flow (B)</p> Signup and view all the answers

What visible structure forms around the embryo to provide protection?

<p>Amniotic sac (D)</p> Signup and view all the answers

Flashcards

What are STIs?

They are infections spread through sexual contact, including vaginal, anal, and oral sex.

What causes STIs?

Bacteria, viruses, or parasites can cause STIs. They spread through bodily fluids like blood, semen, and vaginal fluids.

Are STIs curable?

Some STIs, like syphilis, gonorrhea, chlamydia, and trichomoniasis, are curable with treatment. Others, like hepatitis B, herpes, HIV, and HPV, are not curable but can be managed.

What are angiosperms?

Flowers are the defining characteristic of angiosperms, and they play a key role in plant reproduction.

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What is asexual reproduction in plants?

Plants can reproduce without relying on other plants by using both organs to reproduce themselves.

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What is contraception?

The deliberate use of methods or techniques to prevent pregnancy after sexual intercourse.

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What are hormonal contraceptives?

A type of contraception that uses hormones to stop ovulation and thicken cervical mucus, preventing sperm from reaching the egg.

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What are barrier methods?

Contraception methods that create a physical barrier to prevent sperm from reaching the egg.

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Are all STIs curable?

Some STIs are curable with medications, while others are not.

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Sperm Production

The process of creating male gametes (sperm) in the testes.

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Testosterone

A hormone primarily produced in the testes that influences male characteristics such as penis growth, sperm motility, and libido.

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Epididymis

A tube connected to the testes where sperm is stored and matures.

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Vas Deferens

A tube that carries sperm from the epididymis to the seminal vesicles.

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Seminal Vesicles

A gland that produces seminal fluid, which provides nutrition for sperm and makes up most of the semen volume.

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Birth

The process of a baby being born, involving uterine contractions and the release of amniotic fluid, resulting in the baby's first breath and separation from the placenta.

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Incubator

A special device that mimics the womb's environment, providing warmth, humidity, and oxygen support for premature babies.

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Contraception

Methods designed to prevent pregnancy by interfering with the process of fertilization or implantation.

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Hormonal Contraception

Contraception methods that use hormones, like birth control pills, to prevent ovulation.

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Barrier Methods

Contraception methods that physically block sperm from reaching the egg, like condoms or diaphragms.

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Gestation Period

The period of time a baby develops in the womb, typically around 9 months (40 weeks) long.

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Fetus

The stage of development after the embryo stage, marked by the formation of human features.

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First Trimester

The first three months of pregnancy.

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Second Trimester

The second three months of pregnancy.

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Third Trimester

The third and final three months of pregnancy.

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Amniocentesis

A procedure where amniotic fluid is extracted and examined for genetic abnormalities.

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Chorionic Villus Sampling (CVS)

A procedure where tissue samples are taken from the placenta to analyze for genetic abnormalities.

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Follicular Phase

The first phase of the menstrual cycle, where the follicle in the ovary grows and releases estrogen.

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FSH (Follicle-Stimulating Hormone)

A hormone produced by the brain during the follicular phase that stimulates the follicle to grow.

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Estrogen

The hormone produced by the growing follicle during the follicular phase that prepares the uterus for pregnancy.

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Ovulation

The process of releasing the egg from the follicle. It occurs after FSH stimulates follicle growth and estrogen production.

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Luteal Phase

The phase after ovulation, where the corpus luteum produces progesterone to thicken the uterine lining.

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Fertilization

The process where a sperm cell fuses with an egg cell, resulting in a single cell with 46 chromosomes. This marks the beginning of a new human being.

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Amniotic Sac

A protective sac filled with fluid that surrounds the developing baby in the womb. It provides a safe environment for growth.

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Sperm's Journey

The journey of sperm from the vagina, through the cervix, uterus, and into the fallopian tube, where it meets the egg.

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Identical Twins

Twins that develop from one fertilized egg that splits into two separate embryos. They share the same genetic makeup.

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Fraternal Twins

Twins that develop from two separate eggs that are fertilized by two different sperm. They are not genetically identical.

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Plant Reproduction

The process by which plants create new individuals, either through self-fertilization or by combining genetic material with other plants.

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Asexual Reproduction

A type of reproduction where a single plant produces offspring that are genetically identical to itself, using only its own reproductive organs.

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Sexual Reproduction

A type of reproduction where two plants of the same species combine their genetic material to create offspring with unique characteristics.

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Flower

The main reproductive structure of a flowering plant, containing the male and female parts needed for fertilization.

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Stem

The part of the plant that supports the flower and acts as a conduit for water and nutrients.

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Calyx

Collection of leaf-like structures around the base of the flower, often green, that protect the bud.

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Thalamus/Receptacle

The base of the flower where other structures attach, and where new flower buds develop.

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Androecium

The male reproductive organ of a flowering plant, consisting of the anther (pollen producer) and the filament.

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Embryo

The stage of development after the blastocyst implants in the uterus, where the embryo's basic structures and systems start forming.

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Placenta

The organ that connects the developing baby to the mother's uterus, allowing nutrient and oxygen exchange, and waste removal.

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Placental Exchange

The process by which the placenta facilitates the exchange of nutrients, oxygen, and waste between the mother and the developing baby.

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Counter-current Flow

The flow of two systems in opposite directions (like mother's blood and baby's blood in the placenta), ensuring efficient exchange of materials.

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Maternal-Fetal Blood Separation

The process by which the placenta prevents maternal and fetal blood from mixing, avoiding potential blood-type incompatibility issues.

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Study Notes

Contraception and STIs

  • Contraception is the deliberate use of artificial methods or other techniques to prevent or stop pregnancy.
  • Many methods can be used before or after sexual intercourse.
  • Methods are inspired by the causes of infertility.
  • The three main types of Contraception are hormonal, barrier, and third.
  • Hormonal methods change the environment to be unfavourable.
  • Barrier methods prevent sperm from reaching the egg.
  • Third methods create environments that are not favorable to sperm and eggs.
  • STIs stand for sexually transmitted diseases.
  • STIs are caused by bacteria, viruses, or parasites.
  • STIs are transmitted through sexual contact, including vaginal, anal, and oral sex.
  • Some STIs are curable, but some aren't.
  • Examples of incurable STIs include syphilis, gonorrhea, herpes simplex, chlamydia, and trichomoniasis.
  • Examples of curable STIs include hepatitis B.
  • HIV and HPV are not curable.
  • Symptoms of STIs can be managed, some can be deadly.
  • STIs can affect fertility.

Plant Reproduction

  • Angiosperms are the majority of plants.
  • They use flowers in the reproduction process.
  • Special features of flowering plants include;
    • Ability to reproduce asexually (self-pollination)
    • Ability to reproduce sexually (cross-pollination)
  • Asexual reproduction:
    • Use both organs to fertilize themselves
    • Creates a clone with the same characteristics
    • More exposed to viruses can adapt

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