39 Questions
Which skin layer contains all of the major tissue types, including epithelial tissue, connective tissues, muscle tissue, and nervous tissue?
Dermis
What protein makes the epidermis waterproof and resistant to bacteria and viruses?
Keratin
In which layer of skin are sweat glands found?
Dermis
What color would the skin appear when the supply of oxygen in the blood is low?
Bluish
What is the cause of herpes simplex?
A virus
What is the most aggressive skin cancer?
Melanoma
What type of skin cancer begins in the flat cells of the epidermis?
Squamous cell carcinoma
Which of the following conditions may require chemotherapy?
Melanoma
What is the cause of cellulitis?
Bacteria
Which of the following diseases or disorders has five stages?
Melanoma
Which skin problem requires treating the whole family?
Scabies
Which skin problem can be caused by excessive rubbing of the skin?
Pediculosis
Which skin problem is an inherited autoimmune disorder?
Psoriasis
Which skin condition has characteristics of itchy, silvery, scaly lesions?
Psoriasis
Which of the following are mites that burrow beneath the skin?
Scabies
Which characteristic is associated with apocrine sweat glands?
Produces sweat with a high amount of protein
Apocrine sweat glands are not associated with which of the following?
Concentrated on the forehead, neck, and back
What type of burn involves only the epidermis?
First-degree burn
What type of burn involves the epidermis and dermis but does not affect muscles or bones?
Second-degree burn
What type of burn involves all layers of the skin and often the muscles and bones?
Full-thickness burn
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?
Basal cell carcinoma
Which type of sweat glands is most numerous in the armpits and groin?
Apocrine sweat glands
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?
Shingles
What is the term for the inflammation of hair follicles resulting from shaving or excessive rubbing of skin areas?
Folliculitis
What is the most superficial layer of the skin made up of?
Epidermis
What is the type of protein that makes the epidermis waterproof and resistant to bacteria and viruses?
Keratin
What is the term for the contagious skin infection that develops oozing lesions that eventually crust over with a distinctive honey-colored crust?
Impetigo
What is the term for the virus that causes cold sores and genital herpes?
Herpes Simplex
What type of glands are mostly located in the dermis of skin?
Sudoriferous
What is the term for ringworm that occurs on the scalp?
Tinea capitis
What is the term for the white half-moon-shaped area at the base of a nail?
Lunula
What is the term for the skin layer also known as the subcutaneous layer?
Hypodermis
In the ABCDE rule for melanoma evaluation, what does the 'A' stand for?
Asymmetry
What is the term for receptors in the skin that detect touch, heat, cold, and pain?
Sensory receptors
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?
Melanin
What is the term for skin lesions that originate from disease or body changes?
Primary lesions
What is the term for a skin lesion that consists of a large blister or cluster of blisters?
Bulla
What is the term for an overgrowth of scar tissue?
Keloid
What are freckles and flat moles examples of?
Primary lesions
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.
This quiz covers the different layers of the skin, including the epidermis, dermis, and hypodermis, as well as the functions and characteristics of each layer.
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