Educational worksheet for students to determine the truthfulness of statements about human skin.

Let’s go through each statement one by one and decide if it’s true or false based on what we know about human skin.

1. There are three layers to mammal skin.
→ Actually, mammal skin (including human skin) has *two* main layers: the epidermis (outer layer) and the dermis (inner layer). Some sources mention a third sublayer called the hypodermis, but that’s not technically part of the skin — it’s underneath. So this is False.

2. A large amount of dust is made of dead skin cells.
→ Yes! When your skin sheds, those tiny flakes become part of household dust. Scientists say up to 90% of indoor dust can be dead skin cells. So this is True.

3. The skin is the largest organ of the body.
→ Definitely true! It covers your whole body and weighs more than any other single organ. So this is True.

4. Once dead, skin cells do not regrow.
→ Dead skin cells fall off, but new ones grow from below to replace them. Your skin is always making new cells! So this is False.

5. A callus is a patch of rough skin made from friction.
→ Yes! If you rub your skin a lot (like on your hands or feet), it gets thicker and harder to protect itself — that’s a callus. So this is True.

6. Human skin comes in only one color.
→ No way! People have many different skin colors — from very light to very dark — because of melanin. So this is False.

7. The skin can not keep out diseases.
→ Wrong! Skin acts like a shield. It keeps germs and bad stuff out. That’s why cuts can get infected — the barrier is broken. So this is False.

8. The thickest skin is found on the bottom of the feet.
→ Yes! The soles of your feet and palms of your hands have the thickest skin because they deal with lots of pressure and rubbing. So this is True.

9. A lot of sun exposure is good for the skin.
→ Too much sun hurts your skin — it can cause burns, aging, and even cancer. A little sun helps make vitamin D, but “a lot” is bad. So this is False.

10. The thinnest skin is found on your eyelids.
→ Yes! Eyelid skin is super thin — that’s why you can see veins there sometimes. So this is True.

Now, for the last part: write two more true facts about human skin.

Here are two simple true facts:
- Your skin helps control your body temperature by sweating or shivering.
- Skin has tiny holes called pores that let sweat and oil come out.

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Final Answer:

1. False
2. True
3. True
4. False
5. True
6. False
7. False
8. True
9. False
10. True

Two additional true facts:
- Your skin helps control your body temperature by sweating or shivering.
- Skin has tiny holes called pores that let sweat and oil come out.