sebaceous glands
produces sebum
melanin
primary pigment that determines skin color
Waterproof protein that replaces cytoplasm in dead skin cells
keratin
Vitamin D
produced when exposed to sunlight, is essential for absorbing calcium and phosphorous
Sweat
water, sweat and urea
98.6 (F)
Normal, average body temperature
Hypodermis
Layer of loose connective and adipose tissue that is deep to the dermis
Type of epithelial membrane that occurs in pairs, lines body cavities
epithelial tissue
Type of epithelial membrane composed of the dermis and epidermis
stratified squamous
arrector pilli function
small muscle attached to hairs, that erect the hair
papillary layer
outer layer of the dermis, directly beneath the epidermis
reticular layer
Deeper layer of the dermis that supplies the skin with oxygen and nutrients
Superficial, 20-50 rows of flattened cells, waterproof (contains melanocytes, keratin, and sweatpores)
epidermis
Papillary layer and reticular layer, collagen and elastin fibers are found (contains receptors and blood vessels)
dermis
The categories of epithelial tissue membranes are:
mucous, cutaneous, and serous membranes
visceral peritoneum
the inner layer of the peritoneum that surrounds the organs of the abdominal cavity
cutaneous membrane
skin
parietal pericardium
lines the pericardial cavity
mucous membrane
Membrane that secretes mucus that lubricates the surface of organs and keeps them moist. (lines the respiratory tract)
When the body temperature rises
eccrine glands become active
eccrine glands
glands that produce sweat; found over most of the body
Aprocrine Gland
A type of gland whose secretions contain parts of secretory cells
first-degree burn
Superficial burns through only the epidermis.
second degree burn
A burn marked by pain, blistering, and superficial destruction of dermis with edema and hyperemia of the tissues beneath the burn.
third degree burn
a burn involving all layers of the skin; characterized by the destruction of the epidermis and dermis, with damage or destruction of subcutaneous tissue (first threat to life is dehydration)
fingernails
a modification of the epidermis
functions skin
protection, prevents penetration, perception, temperature regulation, identification, communication, wound repair, absorption and excretion, production of vitamin D
hair structure
shaft, follicle, and cuticle
The secretion of sebum is stimulated by
hormones, especially male sex hormones
basal cell carcinoma
the most common form of skin cancer and the least malignant type
mechanical damage
Pressure or tearing of tissue
desiccation
drying out
chemical damage
Damage caused by any chemical that breaks down cells or the connections between cells.
Skin as you age
loses elasticity, thins and dries
Sweat is slightly acidic
helps control the amount bacteria on the skin
Blood vessels will ______ to help release excess heat
expand
Open body cavities are lined with ___________ membranes
mucous membranes
Common name for decubitus ulcers
bed sores
Pacinian corpuscles
respond to deep pressure and vibration
Meissner's corpuscles
light touch
Nerve endings
Basic sensations such as touch, pain, heat, cold & pressure are registered by