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Questions and Answers
Which skin layer contains all of the major tissue types, including epithelial tissue, connective tissues, muscle tissue, and nervous tissue?
Which skin layer contains all of the major tissue types, including epithelial tissue, connective tissues, muscle tissue, and nervous tissue?
- Epidermis
- Hypodermis
- Dermis (correct)
- Subcutaneous
What protein makes the epidermis waterproof and resistant to bacteria and viruses?
What protein makes the epidermis waterproof and resistant to bacteria and viruses?
- Gelatin
- Keratin (correct)
- Elastin
- Collagen
In which layer of skin are sweat glands found?
In which layer of skin are sweat glands found?
- Epidermis
- Subcutaneous
- Dermis (correct)
- Hypodermis
What color would the skin appear when the supply of oxygen in the blood is low?
What color would the skin appear when the supply of oxygen in the blood is low?
What is the cause of herpes simplex?
What is the cause of herpes simplex?
What is the most aggressive skin cancer?
What is the most aggressive skin cancer?
What type of skin cancer begins in the flat cells of the epidermis?
What type of skin cancer begins in the flat cells of the epidermis?
Which of the following conditions may require chemotherapy?
Which of the following conditions may require chemotherapy?
What is the cause of cellulitis?
What is the cause of cellulitis?
Which of the following diseases or disorders has five stages?
Which of the following diseases or disorders has five stages?
Which skin problem requires treating the whole family?
Which skin problem requires treating the whole family?
Which skin problem can be caused by excessive rubbing of the skin?
Which skin problem can be caused by excessive rubbing of the skin?
Which skin problem is an inherited autoimmune disorder?
Which skin problem is an inherited autoimmune disorder?
Which skin condition has characteristics of itchy, silvery, scaly lesions?
Which skin condition has characteristics of itchy, silvery, scaly lesions?
Which of the following are mites that burrow beneath the skin?
Which of the following are mites that burrow beneath the skin?
Which characteristic is associated with apocrine sweat glands?
Which characteristic is associated with apocrine sweat glands?
Apocrine sweat glands are not associated with which of the following?
Apocrine sweat glands are not associated with which of the following?
What type of burn involves only the epidermis?
What type of burn involves only the epidermis?
What type of burn involves the epidermis and dermis but does not affect muscles or bones?
What type of burn involves the epidermis and dermis but does not affect muscles or bones?
What type of burn involves all layers of the skin and often the muscles and bones?
What type of burn involves all layers of the skin and often the muscles and bones?
Which of the following skin disorders would the practitioner test for given the appearance of a small, smooth, and red sore with a slight waxy sheen?
Which of the following skin disorders would the practitioner test for given the appearance of a small, smooth, and red sore with a slight waxy sheen?
Which type of sweat glands is most numerous in the armpits and groin?
Which type of sweat glands is most numerous in the armpits and groin?
Which of the following skin disorders would the practitioner test for given the appearance of a rash that is occurring down one side of the back and thigh?
Which of the following skin disorders would the practitioner test for given the appearance of a rash that is occurring down one side of the back and thigh?
What is the term for the inflammation of hair follicles resulting from shaving or excessive rubbing of skin areas?
What is the term for the inflammation of hair follicles resulting from shaving or excessive rubbing of skin areas?
What is the most superficial layer of the skin made up of?
What is the most superficial layer of the skin made up of?
What is the type of protein that makes the epidermis waterproof and resistant to bacteria and viruses?
What is the type of protein that makes the epidermis waterproof and resistant to bacteria and viruses?
What is the term for the contagious skin infection that develops oozing lesions that eventually crust over with a distinctive honey-colored crust?
What is the term for the contagious skin infection that develops oozing lesions that eventually crust over with a distinctive honey-colored crust?
What is the term for the virus that causes cold sores and genital herpes?
What is the term for the virus that causes cold sores and genital herpes?
What type of glands are mostly located in the dermis of skin?
What type of glands are mostly located in the dermis of skin?
What is the term for ringworm that occurs on the scalp?
What is the term for ringworm that occurs on the scalp?
What is the term for the white half-moon-shaped area at the base of a nail?
What is the term for the white half-moon-shaped area at the base of a nail?
What is the term for the skin layer also known as the subcutaneous layer?
What is the term for the skin layer also known as the subcutaneous layer?
In the ABCDE rule for melanoma evaluation, what does the 'A' stand for?
In the ABCDE rule for melanoma evaluation, what does the 'A' stand for?
What is the term for receptors in the skin that detect touch, heat, cold, and pain?
What is the term for receptors in the skin that detect touch, heat, cold, and pain?
What is the term for the pigment that traps ultraviolet radiation from sunlight and prevents the radiation from harming structures in the underlying layers of the skin?
What is the term for the pigment that traps ultraviolet radiation from sunlight and prevents the radiation from harming structures in the underlying layers of the skin?
What is the term for skin lesions that originate from disease or body changes?
What is the term for skin lesions that originate from disease or body changes?
What is the term for a skin lesion that consists of a large blister or cluster of blisters?
What is the term for a skin lesion that consists of a large blister or cluster of blisters?
What is the term for an overgrowth of scar tissue?
What is the term for an overgrowth of scar tissue?
What are freckles and flat moles examples of?
What are freckles and flat moles examples of?
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Study Notes
Skin Layers
- The dermis contains all of the major tissue types, including epithelial tissue, connective tissues, muscle tissue, and nervous tissue.
- The epidermis is the most superficial layer of the skin, made up of many layers of tightly packed cells.
- The hypodermis, also known as the subcutaneous layer, is the layer of skin beneath the dermis.
Skin Functions
- Keratin is a durable protein that makes the epidermis waterproof and resistant to bacteria and viruses.
- Sweat glands are found in the dermis, and are of two types: eccrine and apocrine.
- The skin excretes small amounts of waste products, such as water and salts, through perspiration.
- The skin detects touch, heat, cold, and pain through sensory receptors.
Skin Conditions
- Basal cell carcinoma is the most common skin cancer.
- Melanoma is the most aggressive skin cancer, often beginning with a mole.
- Squamous cell carcinoma begins in the flat cells of the epidermis.
- Eczema is a skin condition with unknown causes, characterized by itchy, silvery, scaly lesions.
- Psoriasis is an inherited autoimmune disorder with characteristics of itchy, silvery, scaly lesions.
- Scabies is caused by mites that burrow beneath the skin.
- Rosacea results from dilation of small facial blood vessels.
- Herpes simplex is a viral infection that causes cold sores and genital herpes.
- Herpes zoster is a viral infection that causes shingles.
- Impetigo is a highly contagious skin condition that develops oozing lesions that eventually crust over with a honey-colored crust.
- Folliculitis is an inflammation of hair follicles, resulting from shaving or excess rubbing of skin areas or from bacteria and fungi.
Skin Lesions
- A primary lesion is a skin lesion that originates from disease or body changes.
- A secondary lesion is a lesion caused by a reaction to external traumas, such as keloids.
- A vascular lesion is an anomaly of the blood vessels, such as telangiectasias or ecchymoses.
- A cicatrix is a scar inside a wound or tissue.
- Petechiae are pinpoint skin hemorrhages caused by bleeding disorders.
- A keloid is an overgrowth of scar tissue.
Burns
- A first-degree burn causes only pain, swelling, and redness.
- A second-degree burn involves the epidermis and dermis, but does not affect muscles or bones.
- A third-degree burn, also known as a full-thickness burn, involves all layers of the skin and often the muscles and bones.
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