ASU BIO 201 Exam 2 Questions with Correct Answers 2026 | Complete Study Pack (Anatomy & Physiology I)

ASU BIO 201 EXAM 2 QUESTIONS WITH gh gh gh gh gh gh




CORRECTANSWERS 2025 g
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List terms synonymous with Skin - CORRECT ANSWER -123
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Describe layers of skin - CORRECT ANSWER -There are two layers:
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- Epidermis

- Dermis



What is Epidermus Layer? - CORRECT ANSWER -Outer layer of stratified squamous epithelium
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What is Dermis Layer? - CORRECT ANSWER -Deeper connective tissue layer
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• Compare thick and thin skin - CORRECT ANSWER -Thin skin: 0.5 - 1-2mm
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gh Thick skin: up to 6mm
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• Describe the epidermis in detail - CORRECT ANSWER -
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Superficial to Dermis, Keritinized stratified squamous epithelium, NO BLOOD CELLS AVASCULAR.
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• Describe the 5 zones/layers of the epidermis - CORRECT ANSWER -STRATUM:
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gh Cornuem

Lucidum

Granulosum

Spinosum
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Basale



• Explain the functions of different types of cells that reside in the various layers of the epidermis -
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CORRECT ANSWER -
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Basale: cells that divide quickly and produce tough fibrus protein filaments, sense touch.
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gh Spinosum: THICKEST, cells alert immune system.
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,Granulosum: - 3-5 layers of granule and vesicle and cells form protein-lipid epidermal water barrier.
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gh Lucidum: THIN, cells are filed with eledin.
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Cornuem: Dead, scaly keratinized cells. gh gh gh gh




• Describe the function of melanin - CORRECT ANSWER -PRODUCE PIGMENT
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Melanin shapes and produces skill color, depending on Eumelanin and Pheomelanin produced in body.
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• Describe how eumelanin and pheomelanin contribute to skin color - CORRECT ANSWER -
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Eumelanin: black/brown
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Pheomelanin: reddish/yellow gh




• Explain how the epidermal- water barrier is created and its function - CORRECT ANSWER -
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g It is created in Stratum Granulosom. forms a protein-lipid epidermal water barrier.
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• Explain why epithelial cells get flat as they ascend toward the surface of the skin -
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CORRECT ANSWER -They die as they get closer to the skin because they get cut off from nutrients.
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• Explain the ecological role of dust mites in the environment - CORRECT ANSWER -
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They feed off dead skin.
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• Describe the dermis - CORRECT ANSWER -0.2- gh gh gh gh gh gh




4mm of fibrous connective tissue composed of collageen with elastic and reticular fibers.
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• Define dermal papilla and piloerector muscles - CORRECT ANSWER -
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Dermal Papillae: upward extensions of dermis into epidermous forming ridges.
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gh Pilorector muscles: smooth muscle. gh gh gh




• Explain the roles of the two different types of connective tissues in the dermis - CORRECT ANSWER -
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Papillary Layer: loose areolar tissue, to let WBC to move through.
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Reticular Layer: dense irregular connective tissue responsible for connective tissue.
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, • Describe the structure and function of the hypodermis - CORRECT ANSWER -
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Structure: Subcutaneous tissue
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Function: energy resevoir and thermal insulation.
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• List terms that are synonymous with hypodermis - CORRECT ANSWER -Subcutaneous tissue
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gh Superficial fascia. gh




• Recall the various pigments that can contribute to skin color - CORRECT ANSWER -Hemoglobin (red)
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gh Carotene (yellow) gh




• Describe hemangiomas - CORRECT ANSWER -freckles and moles
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• List seven abnormal skin colors and their causes - CORRECT ANSWER -skin colors:
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Blue

red
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yell
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w

golden-brown

gh pale

genetic lack of melanin
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gh bruise



Abnormal Skin CAUSES - CORRECT ANSWER -Cyanosis
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gh Erythma

Jaundice

gh Bronzin

g Pallor
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Albinism

gh Hematom

a