Educational worksheet illustrating the anatomy of the male reproductive system with labeled components for learning purposes.

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Question 1: What are the parts of the male reproductive system?

Instructions: Label the diagram using the terms listed below.

Terms to use:
- testes
- epididymis
- vas deferens
- seminal vesicles
- prostate gland
- urethra
- penis
- scrotum

*(Note: You should label the diagram accordingly. Below is a description of where each part goes.)*

#### Anatomy of the Male Reproductive System (Labeling Guide):

1. Testes – Located in the scrotum; produce sperm and testosterone.
2. Epididymis – Coiled tube on top of the testes; stores and matures sperm.
3. Vas Deferens – Tube that carries sperm from the epididymis to the ejaculatory duct.
4. Seminal Vesicles – Glands that produce fluid to nourish sperm; empty into the vas deferens.
5. Prostate Gland – Surrounds the urethra; produces milky fluid that makes up part of semen.
6. Urethra – Tube that carries urine and semen out of the body through the penis.
7. Penis – External organ for urination and delivery of sperm.
8. Scrotum – Sac of skin that holds the testes; regulates temperature for sperm production.

> Answer: Label the diagram using the above terms in their correct anatomical locations.

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Question 2: Match the following structures to their functions.

| Structure | Function |
|---------|--------|
| A. Testes | 1. Produce sperm |
| B. Epididymis | 2. Stores sperm until ejaculation |
| C. Vas deferens | 3. Transports sperm from the epididymis to the seminal vesicles |
| D. Seminal vesicles | 4. Produce fluid that mixes with sperm to form semen |
| E. Prostate gland | 5. Produces fluid that helps sperm move |
| F. Urethra | 6. Carries both urine and semen |

#### Correct Matches:

- A. Testes → 1. Produce sperm
- B. Epididymis → 2. Stores sperm until ejaculation
- C. Vas deferens → 3. Transports sperm from the epididymis to the seminal vesicles
- D. Seminal vesicles → 4. Produce fluid that mixes with sperm to form semen
- E. Prostate gland → 5. Produces fluid that helps sperm move
- F. Urethra → 6. Carries both urine and semen

> ✔ Answer: Match as shown above.

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Question 3: Why is it important for the testes to be located outside the body?

Answer:
The testes are located in the scrotum, which is outside the body, because sperm production requires a temperature slightly lower than normal body temperature (about 35°C or 95°F). If the testes were inside the body, the higher temperature would impair sperm development and reduce fertility.

> ✔ Final Answer: The testes are located outside the body to maintain a cooler temperature necessary for sperm production.

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Let me know if you'd like this formatted as a printable answer sheet or need help drawing the labeled diagram!