Exploring the Integumentary System

What is the outermost layer of the skin called?

• Dermis

• Epidermis

• Hypodermis

• Subcutaneous layer

Which of the following is a primary function of the skin?

• Digestion

• Respiration

• Protection

• Circulation

Identify the type of cell responsible for producing melanin in the skin.

• Keratinocytes

• Melanocytes

• Langerhans cells

• Merkel cells

Which skin disorder is characterized by red, itchy, and scaly patches?

• Acne

• Psoriasis

• Eczema

• Rosacea

What is the main protein found in hair and nails?

• Collagen

• Elastin

• Keratin

• Myosin

Which gland is responsible for producing oil in the skin?

• Sweat gland

• Sebaceous gland

• Endocrine gland

• Salivary gland

Explain how the skin helps regulate body temperature.

• By producing melanin

• Through the dilation and constriction of blood vessels

• By synthesizing vitamin D

• By storing fat

Describe the role of keratinocytes in the skin.

• They produce collagen

• They provide a waterproof barrier

• They detect touch sensations

• They fight infections

How do sweat glands contribute to homeostasis?

• By producing oil

• By regulating body temperature through perspiration

• By synthesizing vitamin D

• By storing nutrients

Compare and contrast the structure of hair and nails.

• Both are made of collagen

• Hair is made of keratin, while nails are made of elastin

• Both are made of keratin, but hair grows from follicles while nails grow from nail beds

• Hair is made of elastin, while nails are made of keratin