Layers
subcutaneous layer/ hypodermis/ superficial fascia
what is composed of loose connective tissue or subcutis tissue, also known as adipose tissue. this layer is 80% fat. this tissue creates a protective cushion that gives contour and smoothness to the body, and it is also a source of energy for the body. vessels, nerves, fibers, adipose cells and fibroblasts are some components of the hypodermis.
hair contains 90% hard
what is b keratin
sensation
what sensing is pressure, vibration, temperature, pain and itching through special receptor organs and nerves
motor/ efferent nerves
what are nerve fibers convey impulses from the brain or spinal cord to the muscles or glands. these nerve fibers stimulate muscles, such as the arrector pili muscles, attached to the hair follicles.
physiology
what is the study of the and activities performed by the body structures, including physical and chemical processes.
dermis/ corium/ cutis/ true skin
what is the support layer of connective tissues above the hypodermis/ 25x thicker than the epidermis. consists of 2 layers: the reticular layer below and the papillary layer above. the dermis primarily comprises of connective tissues made of collagen protien and elastin fibers. the dermis supplies the skin with oxygen and nutrients through a network of blood vessels and lymphatic channels.
b keratin has lower
moisture and fat content than soft a keratin does, and is particularly tough, elastic material.
protection
what is the skin is a thin, yet strong, protective barrier to outside elements and microorganisms.
sensory/ afferent nerve
what are nerve fibers send messages to the central nervous system and brain to react to heat, cold, pain, pressure, and touch
histology/ microscopic anatomy
what is the study of the structure and composition of tissue
the epidermis
what is the outermost layer of the skin. this is the epithelial tissue that covers our body. it is a thin, protective covering with many nerve endings. the epidermis is composed of five layers called strata
(stratum germinativum, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum)
keratin forms continuous sheets
what is fingernails
heat regulation
what is the body maintains thermoregulation through evaporation, perspiration, radiation, and insulation. Sweat glands release heat from the body through perspiration to keep us from overheating.
the two types of glands of the skin
what are the sebaceous glands and sudoriferous glands
estheticians who specialize is the health and beauty of the skin are sometimes referred to as
what are technicians, skin therapists, or specialists
reticular layer
what is the denser and deeper layer of the dermis, is comprised of mainly collagen and elastin
keratin forms long, endless fibers
hair
excretion
what is the sudiferous glands also known as sweat glands excrete perspiration.
sebaceous glands
what are glands connected to the hair follicles and produce oil, which protects the surface of the skin
true or false: the esthetician should study and have a thorough understanding of the physiology and histology of the skin because there is so much to study about the body's largest organ and how to best maintain its optimum health and with a deeper understanding, the skin therapist can confidently treat this sophisticated system
what is true
papillary layer
what connects the dermis to the epidermis
hair also contains melanin which
determines hair color
secretion and absorption
what is sebaceous glands also known as oil glands are appendages attached to follicles that produce sebum
what is absorption of chemicals, hormones, moistures and oxygen is necessary for our skins health.
sudoriferous glands
what are the glands that help to regulate body temperature and eliminate minute amounts of waste products by excreting sweat. there are 2 kinds of sweat glands. apocrine and eccrine.
true or false: skin or the integumentary system is the largest organ in the body
what is true