Anatomy and Physiology Quiz

Which layer of the skin is composed of stratified squamous epithelium and provides a protective barrier against pathogens and environmental factors?

• Epidermis

• Dermis

• Hypodermis

• Subcutaneous tissue

What is the function of melanin in the skin?

• Regulate body temperature

• Produce sebum

• Produce sweat

• Determine skin color and protect from UV radiation

Which cells are responsible for producing keratin and regulating calcium absorption in the epidermis?

• Keratinocytes

• Langerhans' cells

• Merkel cells

• Melanocytes

Which layer of the epidermis is the uppermost layer, consisting of dead skin cells and providing a protective barrier?

• Stratum basale

• Stratum spinosum

• Stratum corneum

• Stratum granulosum

What is the function of Langerhans cells in the skin?

• Act as first line defenders and play a significant role in antigen presentation

• Regulate body temperature

• Produce melanin

• Serve as mechanoreceptors for light touch

Which layer of the dermis is the upper layer, thinner, and composed of loose connective tissue?

• Epidermis

• Papillary layer

• Subcutaneous tissue

• Reticular layer

What is the primary function of the hypodermis?

• Contain adipose tissue and provide insulation

• Provide structural support and elasticity to the skin

• Produce sweat

• Produce keratin and regulate calcium absorption

What is the function of sebaceous glands in the skin?

• Regulate body temperature

• Produce sweat

• Produce sebum to moisturize and protect the skin

• Produce keratin and regulate calcium absorption

What is the primary function of sweat glands in the skin?

• Produce keratin and regulate calcium absorption

• Produce sweat to help regulate body temperature by evaporative cooling

• Produce sebum

• Produce melanin