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Test 3
first pg of notes
24
Anatomy
11th Grade
01/30/2016

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Cards

Term
What is the largest organ of the body?
Definition
skin
Term
What is the scientific name for skin?
Definition
cutaneous membrane
Term
What is the outer layer of the skin?
Definition
epidermis
Term
What is the process of a steroid that is converted to calcitriol, a hormone important to normal calcium metabolism?
Definition
synthesis of vitamin D3
Term
What is the scientific name for the epidermis?
Definition
stratified squamous epithelium
Term
What part of the skin is avascular?
Definition
epithelium
Term
What kind of cells are usually inert or dead?
Definition
epidermal cells
Term
excessive shedding of cells from outer layer of scalp skin
Definition
dandruff
Term
What is the epidermis dominated by?
Definition
keratino
Term
What is a tough, fibrous protein and is the basic structural component of hair and nails in humans?
Definition
keratin
Term
Is sanding off your fingertips a permanent condition?
Definition
no
Term
What is an orange-yellow pigment that normally accumulates in epidermal cells?
Definition
carotene
Term
Where is carotene found?
Definition
in orange vegetables like carrots
Term
What can carotene be converted into that helps maintain epithelium and for the synthesis of photoreceptor pigments in the eye?
Definition
Vitamin A
Term
What is a brown, yellow-brown, or black pigment produced by melanocytes?
Definition
melanin
Term
What do melanocytes manufacture melanin from?
Definition
the amino acid tyrosine
Term
What pigment do albino individuals not have the ability to produce?
Definition
melanin
Term
What are small pigmented areas on pale skin where more melanin is being produced?
Definition
freckles
Term
What are variable pigmented areas that develop on sun exposed skins in older individuals with pale skin?
Definition
liver spots
Term
What is a malignant melanoma?
Definition
skin cancer
Term
pigment in red blood cells that binds to and transports oxygen
Definition
hemoglobin
Term
liver cannot excrete bile so a yellowish pigment accumulates in body fluids
Definition
jaundice
Term
pituitary gland secretes large quantities of adrenocorticotropic hormone (ACTH) and causes a darkening of the skin
Definition
Addison's Disease
Term
individuals lose their melanocytes (immune system malfunctions and antibodies attack normal melanocytes)
Definition
vitiligo
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