Integumentary System

Open Ended

In what ways do you think the integumentary system protects the body, and why might it be considered the most vulnerable organ system?

Multiple Choice

Why is the inspection of the skin, hair, and nails considered a significant part of a physical exam?

• Because they are easy to observe and can indicate underlying health issues

• Because they are the largest organs in the body

• Because they are not affected by environmental factors

• Because they do not require medical treatment

Multiple Select

Select all correct statements about the differences between thick skin and thin skin.

• Thick skin covers the palms and soles and lacks hair follicles.

• Thin skin contains sebaceous glands and sweat glands.

• Thick skin has a thicker epidermis than thin skin.

• Thin skin covers the front of hands and bottoms of feet.

Multiple Choice

Which layer of the skin is primarily responsible for storing fat and providing insulation?

• Epidermis

• Dermis

• Hypodermis

• Stratum corneum

Open Ended

Describe the role of sensory receptors in the skin and how they contribute to sensation and thermoregulation.

Multiple Choice

Which of the following are functions of the skin?

• Resistance to trauma and infection

• Vitamin D synthesis

• Thermoregulation

• All of the above

Open Ended

Explain how the skin acts as a barrier to infection and harmful chemicals. Include specific components and mechanisms in your answer.

Multiple Choice

Which epidermal cell type is responsible for synthesizing the pigment that shields DNA from ultraviolet radiation?

• Keratinocytes

• Stem cells

• Melanocytes

• Tactile cells

Open Ended

Explain the functional differences between tactile cells and dendritic cells in the epidermis.

Multiple Select

Which layers of the epidermis contain living keratinocytes?

• Stratum corneum and stratum lucidum

• Stratum spinosum and stratum granulosum

• Stratum basale and stratum spinosum

• Stratum granulosum and stratum corneum

Multiple Choice

Arrange the layers of the epidermis from deepest to most superficial.

• Stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, stratum basale

• Stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum

• Stratum spinosum, stratum basale, stratum granulosum, stratum lucidum, stratum corneum

• Stratum granulosum, stratum spinosum, stratum basale, stratum lucidum, stratum corneum

Open Ended

Describe the process by which keratinocytes migrate from the deepest layer of the epidermis to the surface and what happens to them during this journey.

Open Ended

Explain how the epidermal water barrier helps prevent dehydration and why it does not prevent the absorption of water when soaking in a bath.

Multiple Choice

Which of the following is NOT one of the four important events that occur in the stratum granulosum?

• Keratinocytes’ organelles degenerate and the cells die

• Cells produce tough envelope proteins beneath their membranes

• Keratinocytes absorb water from the environment

• Membrane-coating vesicles release lipid mixture that waterproofs the cell surface

Multiple Select

Which of the following are functions of the dermis?

• Houses hair follicles and nail roots

• Composed mainly of keratin

• Well supplied with blood vessels and nerve endings

• Is the tissue of facial skin for muscle attachment

Multiple Choice

Which layer of the dermis is responsible for stretch marks (striae) due to tears in collagen fibers?

• Papillary layer

• Reticular layer

• Epidermal layer

• Subcutaneous layer

Multiple Choice

Which pigment is responsible for the brownish black color in skin?

• Pheomelanin

• Eumelanin

• Carotene

• Hemoglobin

Multiple Choice

Which layer of the skin contains the melanized cells responsible for differences in skin color between individuals with dark and light skin?

• Stratum corneum

• Stratum basale

• Dermis

• Epidermis

Multiple Select

Which of the following pigments can influence skin color?

• Melanin

• Hemoglobin

• Carotene

• Keratin

Open Ended

Explain how UV light can have both harmful and beneficial effects on human skin.

Multiple Choice

Populations that evolved in far northern latitudes tend to have which type of skin pigmentation?

• Dark skin to protect against UV

• Light skin to allow adequate UV absorption

• Yellowish skin due to carotene

• Bluish skin due to oxygen deficiency

Open Ended

Discuss how migration and intermarriage can complicate the association between UV exposure and skin tone in human populations.

Open Ended

Reflecting on today's lesson, why do you think the skin is considered the most vulnerable organ in the human body?

Multiple Choice

What are the main components of the integumentary system?

• Skin, hair, nails, and cutaneous glands

• Bones, muscles, and tendons

• Heart, lungs, and blood vessels

• Brain, spinal cord, and nerves