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Which of the following best describes the functions of the integumentary system, including structures involved?

• Protection, Sensation, Temperature regulation, Vitamin D production, Excretion

• Digestion, Absorption, Circulation, Respiration, Reproduction

• Movement, Coordination, Reflexes, Hormone production, Filtration

• Support, Locomotion, Blood cell production, Detoxification, Storage

What tissue type is the epidermis made of?

• Stratified squamous epithelium.

• Simple cuboidal epithelium.

• Areolar connective tissue.

• Adipose tissue.

The roles of the following cell types in the epidermis are: Keratinocytes produce keratin, Melanocytes produce melanin, Dendritic (Langerhans) cells are immune cells, and Tactile (Merkel) cells are sensory receptors.

• Keratinocytes produce keratin, Melanocytes produce melanin, Dendritic (Langerhans) cells are immune cells, and Tactile (Merkel) cells are sensory receptors.

• Keratinocytes produce melanin, Melanocytes produce keratin, Dendritic (Langerhans) cells are sensory receptors, and Tactile (Merkel) cells are immune cells.

• Keratinocytes are immune cells, Melanocytes are sensory receptors, Dendritic (Langerhans) cells produce keratin, and Tactile (Merkel) cells produce melanin.

• Keratinocytes are sensory receptors, Melanocytes are immune cells, Dendritic (Langerhans) cells produce melanin, and Tactile (Merkel) cells produce keratin.

The process of keratinization involves how cells change through the strata of the epidermis: Stratum basale, Stratum spinosum, Stratum granulosum, Stratum lucidum, Stratum corneum.

• Cells move upward through the layers, accumulating keratin and eventually dying to form the outermost protective layer.

• Cells remain unchanged as they move through the layers of the epidermis.

• Cells lose keratin as they move toward the surface of the skin.

• Cells divide rapidly in the stratum corneum and migrate downward.

What is the difference between thin vs. thick skin in terms of the number of epidermal layers and locations that each type of skin is found in the body?

• Thick skin has five layers (including stratum lucidum) and is found on palms and soles. Thin skin has four layers and covers the rest of the body.

• Thick skin has four layers and is found all over the body. Thin skin has five layers and is only found on the face.

• Thick skin has three layers and is found on the back. Thin skin has five layers and is found on the palms and soles.

• Thick skin has five layers and is found on the scalp. Thin skin has four layers and is found on the palms and soles.

The pigments Melanin, Carotene, and Hemoglobin from blood influence skin color by:

• Melanin provides brown to black color, Carotene gives a yellow-orange hue, and Hemoglobin imparts a reddish tint.

• Melanin provides a blue color, Carotene gives a green hue, and Hemoglobin imparts a purple tint.

• Melanin provides a red color, Carotene gives a brown hue, and Hemoglobin imparts a yellow tint.

• Melanin provides a yellow color, Carotene gives a black hue, and Hemoglobin imparts a green tint.

Basal Cell Carcinoma is most commonly characterized by which of the following: its frequency, likelihood to metastasize, and cell type of origin?

• It is the most common skin cancer, rarely metastasizes, and arises from basal cells.

• It is a rare skin cancer, frequently metastasizes, and arises from squamous cells.

• It is the most common skin cancer, frequently metastasizes, and arises from melanocytes.

• It is a rare skin cancer, rarely metastasizes, and arises from keratinocytes.

How common is it?

• It is very common.

• It is extremely rare.

• It is never seen.

• It is only found in specific regions.

The likelihood of metastasis (spread) is:

• High

• Low

• Certain

• Impossible

The cell type of origin is:

• Epithelial cell

• Neuron

• Muscle cell

• Red blood cell