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A&P U2 Integumentary System
Terms in this set (44)
Consists of the skin, mucous membranes, hair, and nail, largest organ of the human body.
Most superficial layer of skin (composed of 5 layers) Replaced every 4-6 weeks
A layer tissue underneath the epidermis of the skin which contains blood vessels, hair follicles, lymphatic vessels, nerves, sensory receptors, and oil and sweat glands.
Also called a subcutaneous layer, this is a layer of fat is located under the dermis of the skin; helps to insulate the body and protects underlying muscles and blood vessels.
A pigment that gives the skin, hair and eyes color and helps protect the body from harmful UV radiation that causes skin cancer.
When exposed to sun, melanocytes produce more melanin=tanning.
A small tubular cavity in skin containing the root of a hair and is attached to sebaceous glands.
The part of the hair located below the surface of the epidermis.
Sebaceous Glands (picture)
Sweat Glands, found through the body. Eccrine and Apocrine
in the pubic and underarm areas that secrete a thicker sweat.
Active after puberty
respond when frightened, upset, pain
The most abundant epidermal cells, they function mainly to produce the protein keratin
Spidery black cells that produce the brown-to-black pigment called melanin.
When exposed to sun they produce more melanin (tanning)
Dense, irregular connective tissue consisting of two regions - the papillary and the reticular areas.
Ducts that empty into hair follicles, excreting oily substances.
These glands produce sweat. Especially in palms and soles.
Respond to elevated body temp.
Fibrous protein that is responsible for the strength and water resistance of the skin surface.
Made:Tiny openings on top of skin with sweat and oil glands
Function: Let sweat and oil come out of skin.
Erector Pilli/Arrector Pilli
Made:Muscles attached to hair
Function:makes the hair on a person's arm stand up to keep them warm
Function:Insulate the body from heat and cold, provides padding, an energy storage area
Found in hypodermis (subcutaneous layer)
Skin covers the body and acts as a physical barrier that protects underlying tissue from physical cut, bacterial invasions, dehydration and sunburn.
bacterial infection of sebaceous glands
It is a mixture of oily substances and fragmented cells that acts as a lubricant to keep the skin soft and moist.
A natural pigment that protects the cells in the skin and in deeper layers from the hazardous effects of UV radiation by absorbing sunlight.
Layer of the skin made up of connective tissue and fat that acts as insulation and padding for the skin.
Outer layer. Protects against pathogens:
Made of keratin. Protects scalp from light from sun
Tube like pockets of epidermal cells that extend into the dermis
Cancers that develop from melon gets
PURPOSE of integumentary
-protects deeper tissues
-prevents infection from entering body
-makes Vitamin D from sunlight
-excrete wastes (sweating)
sebaceous gland (def)
found in the dermis usually attached to hair follicle, secretes sebum
Sudoriferous gland (Eccrine) picture
Sudoriferous gland (Apocrine) picture
papillary dermis layer of the dermis
layer in which dermal papilla can be found
dermal papilla picture
stratum germinativum (basale) picture
arrow is pointing to?
stratum corneum picture
arrow is pointing to?
stratum granulosum picture
stratum lucidum picture
stratum spinosum picture
Order of epithelium (top to bottom)
corneum, lucidum, granulosum, spinosum, germinativum (basale)
Order of epithelium (bottom to top)
germinativum (basale), spinosum, granulosum, lucidum, corneum
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