Integumentary System Worksheet
A Grade 12 science worksheet covering the structure and functions of the integumentary system, including skin layers, accessory organs, and common disorders.
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Integumentary System Assessment
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Read each question carefully and answer to the best of your knowledge. Choose the best option for multiple-choice questions, fill in the blanks, and provide detailed answers for short-answer questions.
1. Which layer of the skin is primarily composed of adipose tissue and serves as an insulator and energy reserve?
Epidermis
Dermis
Hypodermis
Stratum corneum
2. Which type of gland produces sebum, an oily substance that lubricates the skin and hair?
Eccrine gland
Apocrine gland
Ceruminous gland
Sebaceous gland
3. The outermost layer of the epidermis, composed of dead, flattened keratinocytes, is called the .
4. Melanin is produced by cells called and is responsible for skin and hair color.
5. Hair growth begins in the located in the dermis.
6. The dermis is avascular, meaning it contains no blood vessels.
True
False
7. Goosebumps are caused by the contraction of arrector pili muscles attached to hair follicles.
True
False
8. Describe three major functions of the integumentary system.
9. Explain the process of thermoregulation carried out by the skin.
Match each term on the left with its correct definition on the right.
10. Keratin
a. Pigment that protects against UV radiation
11. Melanin
b. Tough, fibrous protein that provides protection
12. Collagen
c. Protein that provides strength and elasticity to skin