Grade 12 Biology: The Integumentary System
This worksheet covers the structure, function, and common conditions of the human integumentary system for Grade 12 Biology students.
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Grade 12 Biology: The Integumentary System
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Read each question carefully and answer to the best of your ability. Refer to the provided diagram where applicable.
Examine the diagram of the human skin cross-section below and answer the questions that follow.
1. Identify the three main layers of the skin shown in the diagram.
2. Which of the following is NOT a primary function of the integumentary system?
Protection from pathogens
Vitamin D synthesis
Regulation of body temperature
Production of blood cells
3. Melanin is produced by which cells in the epidermis?
Keratinocytes
Merkel cells
Melanocytes
Langerhans cells
4. The outermost layer of the epidermis is called the .
5. Hair follicles are located in the layer of the skin.
6. Sebaceous glands produce , which lubricates the skin and hair.
7. The dermis is primarily composed of adipose tissue.
True
False
8. Sweat glands play a crucial role in thermoregulation.
True
False
9. Describe the process of keratinization and its importance to the epidermis.
10. Explain how the skin helps to protect the body from UV radiation.
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