Skin Structure and Function Quiz

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Questions and Answers

What is the largest organ of the body?

  • Skin (correct)
  • Kidney
  • Liver
  • Heart

Which cells produce keratin to form the superficial layer of the epidermis?

  • Fibroblasts
  • Keratinocytes (correct)
  • Langerhans cells
  • Melanocytes

What regulates skin blood flow?

  • Parasympathetic nervous system
  • Central nervous system
  • Sympathetic nervous system (correct)
  • Endocrine system

What leads to gray and thinner hair in older adults?

<p>Loss of melanocytes and hair follicles (C)</p> Signup and view all the answers

Which layer of the skin contains macrophages, fibroblasts, and fat cells?

<p>Subcutaneous layer (C)</p> Signup and view all the answers

What is the primary function of the dermal appendages?

<p>Regulate body temperature (B)</p> Signup and view all the answers

What happens to the skin of older adults in terms of permeability?

<p>It becomes more permeable (D)</p> Signup and view all the answers

What is the composition of the dermis?

<p>Connective tissue elements and hair follicles (C)</p> Signup and view all the answers

What leads to thinner and drier older skin?

<p>Fewer capillary loops (D)</p> Signup and view all the answers

Which cells are found in the underlying epidermis?

<p>Melanocytes (C)</p> Signup and view all the answers

What is the role of papillary capillaries in the skin?

<p>Heat loss and heat conservation (D)</p> Signup and view all the answers

What happens to sweating in older adults?

<p>It decreases (A)</p> Signup and view all the answers

Which skin disorder involves scaly, yellowish, inflammatory plaques and may be associated with Malassezia yeasts, immunosuppression, and epidermal hyperproliferation?

<p>Seborrheic dermatitis (D)</p> Signup and view all the answers

Which skin disorder is a chronic autoimmune T-cell-mediated inflammatory disease characterized by scaly, erythematous pruritic plaques?

<p>Psoriasis (B)</p> Signup and view all the answers

Which skin disorder involves oval lesions with scales around the edges located along skin lines of the trunk?

<p>Pityriasis rosea (D)</p> Signup and view all the answers

Which skin disorder is a chronic, inflammatory, recurring scarring disease involving areas of skin where there are folds, hair follicles, and sweat glands?

<p>Hidradenitis suppurativa (B)</p> Signup and view all the answers

Which skin disorder involves inflammation with erythema, edema, papules, pustules, and telangiectasia that develops on the middle third of the face?

<p>Acne rosacea (D)</p> Signup and view all the answers

Which skin disorder is an inflammation of the pilosebaceous follicles with hypertrophy of sebaceous glands and telangiectasia, particularly of the nose?

<p>Acne vulgaris (C)</p> Signup and view all the answers

Which skin disorder is an inflammation of the skin without involvement of mucous membranes, often associated with HSV or other infections?

<p>Erythema multiforme minor (C)</p> Signup and view all the answers

Which skin disorder involves chronic autoimmune blistering that begins in the mouth or on the scalp and spreads to other parts of the body?

<p>Pemphigus vulgaris (A)</p> Signup and view all the answers

Which skin disorder is an autoimmune disease that affects only the skin, usually occurring in sun-exposed areas with a butterfly distribution over the nose and cheeks?

<p>Cutaneous lupus erythematosus (C)</p> Signup and view all the answers

Which skin disorder is a benign autoimmune blistering disease that resolves rapidly?

<p>Bullous pemphigoid (D)</p> Signup and view all the answers

Which skin disorder is a bacterial infection of the hair follicle?

<p>Folliculitis (B)</p> Signup and view all the answers

What skin disorder is a chronic, inflammatory, recurring scarring disease involving areas of skin where there are folds, hair follicles, and sweat glands?

<p>Erysipelas (C)</p> Signup and view all the answers

What skin disorder involves inflammation of the pilosebaceous follicles with hypertrophy of sebaceous glands and telangiectasia, particularly of the nose?

<p>Carbuncle (D)</p> Signup and view all the answers

What skin disorder involves inflammation with erythema, edema, papules, pustules, and telangiectasia that develops on the middle third of the face?

<p>Erysipelas (D)</p> Signup and view all the answers

What skin disorder involves oval lesions with scales around the edges located along skin lines of the trunk?

<p>Tinea skin infections (A)</p> Signup and view all the answers

What skin disorder is a benign, rough, elevated lesion caused by papillomavirus?

<p>Tinea skin infections (D)</p> Signup and view all the answers

Which virus causes cold sores but can infect the cornea, mouth, and labia?

<p>HSV-1 (C)</p> Signup and view all the answers

Which skin infection is caused by Staphylococcus or Streptococcus and is more common in children?

<p>Impetigo (C)</p> Signup and view all the answers

Which skin disorder is a yeastlike fungal infection caused by C. albicans occurring on skin, on mucous membranes, and in the gastrointestinal tract?

<p>Candidiasis (A)</p> Signup and view all the answers

What skin disorder is an immune-mediated inflammation of small skin blood vessels with purpura, ischemia, and necrosis resulting from disruption of the vessel wall?

<p>Cutaneous vasculitis (B)</p> Signup and view all the answers

What skin disorder is a chronic autoimmune blistering disease that begins in the mouth or on the scalp and spreads to other parts of the body?

<p>Pemphigus vulgaris (D)</p> Signup and view all the answers

What skin disorder is an inflammation of the skin without involvement of mucous membranes, often associated with HSV or other infections?

<p>Cellulitis (A)</p> Signup and view all the answers

Which skin disorder is a benign proliferation of squamous cells that produces elevated, smooth, or warty lesions, usually in sun-damaged skin?

<p>Seborrheic keratosis (C)</p> Signup and view all the answers

What skin disorder arises from hair follicles on sun-exposed areas and results in a dome-shaped, crusty lesion filled with keratin that resolves in 3 to 4 months?

<p>Keratoacanthoma (B)</p> Signup and view all the answers

Which skin disorder is a pigmented scaly lesion that may become malignant in the form of squamous cell carcinoma and develops in sun-exposed individuals with fair skin?

<p>Actinic keratosis (B)</p> Signup and view all the answers

What skin disorder is a malignant tumor that arises from melanocytes and may lead to metastasis through the lymph nodes if not excised early?

<p>Cutaneous melanoma (A)</p> Signup and view all the answers

Which skin disorder is an immune-mediated sclerosis of the skin that may be localized or systemic, affecting muscle, bone, and other body organs?

<p>Scleroderma (D)</p> Signup and view all the answers

What skin disorder is associated with type I hypersensitivity responses and appears as wheals, welts, or hives?

<p>Urticarial lesions (D)</p> Signup and view all the answers

Which skin disorder is the most common skin cancer, occurring most often on sun-exposed areas, and has different subtypes and morphologic presentations?

<p>Basal cell carcinoma (A)</p> Signup and view all the answers

What skin disorder is a tumor of the epidermis with uncontrolled growth of keratinocytes associated with sun exposure and can be localized (in situ) or invasive?

<p>Squamous cell carcinoma (B)</p> Signup and view all the answers

Which skin disorder is an endothelial cell vascular malignancy associated with immunodeficiency states and herpesvirus 8?

<p>Kaposi's sarcoma (A)</p> Signup and view all the answers

What skin disorder is a fungal infection of the nail plate?

<p>Onychomycosis (C)</p> Signup and view all the answers

Which skin disorder is a bacterial infection of the hair follicle?

<p>Paronychia (C)</p> Signup and view all the answers

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