Human Reproductive System Unit Review Worksheet featuring labeled diagrams of female and male reproductive organs.

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Let me go through each section step-by-step and provide the correct answers with explanations.

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1. Label the diagram below:

#### Female Reproductive Organs
(From left to right in typical diagram layout):

- A: Ovary
*Explanation*: The ovaries produce eggs (ova) and hormones like estrogen and progesterone.

- B: Fallopian Tube (Uterine Tube)
*Explanation*: This is where fertilization usually occurs. It transports the egg from the ovary to the uterus.

- C: Uterus
*Explanation*: The site of implantation and fetal development during pregnancy.

- D: Vagina
*Explanation*: The birth canal; also receives sperm during intercourse.

- E: Cervix
*Explanation*: The lower part of the uterus that connects to the vagina.

- F: Vulva (External genitalia)
*Explanation*: Includes the labia, clitoris, and vaginal opening — external female reproductive structures.

> Note: Depending on how the diagram is labeled, F might be "vulva" or "clitoris," but typically, the vulva encompasses all external parts.

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#### Male Reproductive Organs

- G: Testes
*Explanation*: Produce sperm and testosterone.

- H: Epididymis
*Explanation*: Stores and matures sperm after production in the testes.

- I: Vas Deferens (ductus deferens)
*Explanation*: Transports mature sperm from the epididymis to the ejaculatory duct.

- J: Seminal Vesicles
*Explanation*: Produce fluid that becomes part of semen.

- K: Prostate Gland
*Explanation*: Adds fluid to semen that helps nourish and protect sperm.

- L: Bulbourethral Glands (Cowper’s glands)
*Explanation*: Secrete a lubricating fluid before ejaculation.

- M: Penis
*Explanation*: Delivers sperm into the female reproductive tract during intercourse.

- N: Scrotum
*Explanation*: Sac that holds the testes and regulates temperature for optimal sperm production.

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2. List the male parts, in order, for which sperm are produced and released:

Answer:
1. Testes – Sperm are produced here (spermatogenesis).
2. Epididymis – Sperm mature and are stored.
3. Vas Deferens – Transports sperm from epididymis.
4. Ejaculatory Duct – Formed by fusion of vas deferens and seminal vesicle duct.
5. Ejaculatory Duct → Urethra – Sperm travel through urethra.
6. Penis – Sperm exit the body via the penis.

✔ Final Answer:
Testes → Epididymis → Vas Deferens → Ejaculatory Duct → Urethra → Penis

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3. List the female parts, in order, for which an egg is ovulated and released:

Answer:
1. Ovary – Egg is produced and released (ovulation).
2. Fallopian Tube – Egg travels here; fertilization may occur.
3. Uterus – If fertilized, embryo implants here.
4. Vagina – Birth canal; exit point during delivery.

✔ Final Answer:
Ovary → Fallopian Tube → Uterus → Vagina

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4. What two hormones trigger sexual maturity?

a. What is another term for sexual maturity?
➡️ Puberty

b. What would it be if they reach sexual maturity?
➡️ They become reproductively capable or able to reproduce.

c. What two hormones trigger sexual maturity?
➡️ Gonadotropin-releasing hormone (GnRH), Follicle-stimulating hormone (FSH), and Luteinizing hormone (LH)

But since the question asks for two, the most direct answer is:

✔ FSH (Follicle-Stimulating Hormone) and LH (Luteinizing Hormone)

These are released by the pituitary gland and stimulate the gonads (testes/ovaries) to produce sex hormones and gametes.

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5. When sperm fertilizes an egg, what is the result?

✔ Zygote

*Explanation*: The fusion of sperm and egg forms a zygote, which begins dividing and develops into an embryo.

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6. In males, what 2 things does the hormone testosterone influence (or do)?

✔ 1. Development of male secondary sex characteristics (e.g., deep voice, facial hair, increased muscle mass)
✔ 2. Production of sperm (spermatogenesis)

Also influences libido (sex drive), bone density, and overall male reproductive function.

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✔ Final Answers Summary:

#### 1. Labels
- Female: A-Ovary, B-Fallopian Tube, C-Uterus, D-Vagina, E-Cervix, F-Vulva
- Male: G-Testes, H-Epididymis, I-Vas Deferens, J-Seminal Vesicles, K-Prostate Gland, L-Bulbourethral Glands, M-Penis, N-Scrotum

#### 2. Male pathway for sperm:
Testes → Epididymis → Vas Deferens → Ejaculatory Duct → Urethra → Penis

#### 3. Female pathway for egg:
Ovary → Fallopian Tube → Uterus → Vagina

#### 4.
a. Puberty
b. Able to reproduce / sexually mature
c. FSH and LH

#### 5. Zygote

#### 6.
1. Stimulates sperm production
2. Promotes male secondary sex characteristics (e.g., facial hair, deep voice)

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