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Teri M skin accessories


Teri Mitton

on 8 September 2017

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Transcript of Teri M skin accessories

Skin accesories and disorders
Lanugo (fetal hair) is replaced near
the time of birth by terminal hairs
(scalp, eyelashes, and eyebrows)
and vellus hairs. At puberty vellus hairs
can be replaced with terminal hairs.
Hair is dead keratinized epithelial cells consisting of a central axis of cells with soft keratin, known as the medulla, which is surrounded by a cortex of cells with hard keratin. The cortex is covered by the cuticle, and single layer of cells filled with hard keratin.
3 Parts of Hair
Shaft, Root and Hair Bulb
The Hair bulb produces the hair in cycles
involving a growth stage and a resting stage.
Eyelashes: grow for 30 days and rest for 105 days
Scalp Hairs: grow for 3 years and rest for 1-2 years
At any given time 90% of the scalp hairs are growing
and loss of about 100 scalp hairs a day is normal.
Hair color is determined by the type and amount of melanin present in the cells of the hair
Contraction of arrector pili muclse cause the hair to stand on end producing "goose bumps"
Sebaceous glands produce sebum
which oils the hair and surface
of the skin
Merocrine sweat glands:
produce sweat to cool the body
and are associated with hair follicles
Apocrine sweat glands:
produce an organic secretion
that can be broken down by
bacteria to cause body odor
Ceruminous glands:
produce ear wax
Mammary Glands:
produce milk
The nail consists of
Nail root
Nail body
Nail Bed
The nail matrix which is part
of the nail root produces the
nail body which is layers of cells
consisting of hard keratin
Functions of the integumentary system
Temperature Regulation
Vitamin D production
Effects of Aging
blood flow to the skin declines
the skin becomes thinner
elasticity is lost
sweat and sebaceous glands are less active
the number of melanocytes decreases
Parasites and Infections of the skin
Skin Pathologies
bacterial infections
viral infections
Chicken Pox
Cold sores
fungal infections
ring worm
Inflammatory conditions
abnormal keratin production
Autoimmune disease that attacks melanocytes
Full transcript