Medical Aesthetics Flashcards
Vital elements for the hair to remain healthy?
Amino acids, mineral salts or vitamins
What is the name of the protein that our hair is made up of?
Keratin
What is cuticle?
Thin, translucent outer layer that protects the cortex
What is cortex ?
This Intermediate gives hair strength, color & texture
Medulla
The central core of the cells that form the innermost layer of the skin.
What are the functions of the hair?
Protection, regulation of body temperature & facilitation of evaporation of perspiration. Also acts as sense organs.
4 phases of hair
1) Anagen phase- hair growth( longest phase lasting about 3-5 years)
2) Catagen phase- hair follicles shrink & hair growth slows down.
3) Telogen phase- hair doesn’t grow but doesn’t fall out either.
4) Exogen phase- hair sheds from scalp, often helped along by washing & brushing
What is Telogen Effluvium?
Doubling or tripling normal hair loss
What is Trichotillomania?
Psychological condition causes an irresistible urge to pull hair from your scalp or other areas of the body.
What is Alopecia Areata?
Body’s immune system attacks healthy hair follicles, causing hair loss.
What are the 3 layers of the skin ?
Epidermis, dermis & subcutaneous
What is epidermis?
The top layer of the skin. It is the thickest it has 5 layers. It is constantly shedding and replacing with new healthy cells. Home to pore which allow oil and sweat to escape.
5 layers of the epidermis
1) stratum Basale
2) stratum spinosum
3) stratum granulosum
4) stratum lucidum
5) stratum corneum
What is Stratum spinosum?
Also known as squamous cell layer. Thickest part of the epidermis. Contains newly formed keratinocytes as well as Langherhan cells that fight infection.
What is stratum granulosum?
Layer contains more keratinocytes that are gradually pushed toward the surface of the skin.
What is stratum basale?
Bottom layer also known as the basal cell layer. Has Column
shaped cells that push older cells toward the surface. Layer is made of melanocytes and Merkel cells that act as receptors touch.
What is Stratum lucidum?
Translucent layer of tissue exists only on the palms of the hands and soles of the feet.
What is Stratum corneum?
Top layer of the epidermis that helps the skin retain moisture & prevents unwanted substances from entering the body.
What is the dermal layer?
It is the layer between the epidermis and hypodermis.It is full of collagen & elastin fibres that gives skin strength and firmness. It
- produces sweat
- allows you to feel things
- grows hair
- produces oil
-brings blood to your skin
What is the hypodermis layer?
Also known as subcutaneous tissue layer. It is the bottom layer contains fat, nerves & large blood vessels. Acts as our temperature regulator.
What is atopic dermatitis?
Eczema
Inflammatory skin disease ( dry, red , itchy patches of skin)
Acne
Hair follicles become clogged with dead skin cells and oil.
Melanoma
Type of skin cancer caused by exposure to excess sunlight.
Rosacea
Common rash found in middle aged people. Tendency to flush and have small red bumps on the centre of the face.
