Unit 2: Support Systems: Integumentary System Flashcards
What are the five functions of skin
- protection,
- Synthesis of vitamin D,
- Reception of Stimuli,
- Temperature Regulation,
- Protection against ultraviolet radiation
outermost layer of skin
epidermis
what are the characterizations of the epidermis
contains no blood vessels (avascular)
composed of dead (keratinized) skin cells
the middle layer of skin
dermis
thick fibrous and elastic tissue that gives the skin flexibility and strength
dermis
what is contained in the dermis
nerve endings, sweat glands, oil glands, hair follicles, and blood vessels
the third or inner layer of skin
subcutaneous
what is characteristics of the subcutaneous
composed of fat that insulate the body from heat and cold, provides padding, and serves as energy storage area
what is another name for the subcutaneous layer
hypodermis
composed of dead (keratinized) skin cells.
helps us grasp and manipulate small objects
nails
sweat is produced in order to cool the body through evaporation. sweat gland
sweat (sudoriferous) gland
secretes sebum, and inorganic salts.
keeps hair and skin fron drying out and becoming brittle
oil (sebaceous) glands
primary function is protection in the integumentary system
hair
how does the hair function in protection
guards scalp from injury and sunlight
eyebrows and eyelashes protect the eyes
hair in nostrils prevents insects and dust from entering
what is hair composed of
dead (keratinized) cells
an inflammatory disease of the sebaceous glands and hair follicles of the skin
acne
a common infection caused by the tinea fungus on the FEET
athletes foot
also caused by the tinea fungus. causes a red skin rash that forms a ring on normal looking skin.
ringworm
also caused by the tinea fungus. causes an itchy, burning rash in the GROIN area.
Jock itch
uncontrolled cell growth of the skin
skin cancer
is the most common form of cancer, with about a million new cases. occurs most frequently on the sun-exposed areas of the body: face ears, neck, scalp, shoulders and back
Basal cell carcinoma (BCC)
is the second most common form of skin cancer. caused by chronic overexposure to sun. tumors appear most frequently on the sun exposed areas.
Squamous cell carcinoma (SCC)
is the third type of skin cancer which originates in the melanocytes. not common but it is a more serious form of skin cancer. rarely occurs in dark skinned people
melanoma
what is the acronym and meaning to assess skin lesions for skin cancer
ABCDE A. asymmetry B. border C. color D. diameter E. Evolution or elevation
