Ch 6 integument system Flashcards by Maya Huggler | Brainscape

Q

What membrane is the skin?

A

Cutaneous membrane

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Q

What is dermatology?

A

Study of skin

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Q

What tissue is found in the epidermis?

A

Stratified squamous epithelium

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Q

What does the stratified squamous epithelium protect from?

A

Abrasion

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Q

What tissue is in the dermis layer?

A

Dense irregular connective tissue and areolar

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Q

What is the function dense irregular CT?

A

Resists stretch in multiple directions

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Q

What tissue is in the hypodermis (subcutaneous) layer?

A

Adipose tissue

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Q

What occurs in Stratum Basale?

A

Mitosis

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Q

What kind of layer is stratum spinosum?

A

Spiny layer

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Q

What kind of layer is darkest layer?

A

Stratum granulosum

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Q

What layers have dead cells?

A

Corneum, lucidum, granulosum

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Q

What layer is transparent?

A

Stratum lucidum

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Q

What is the top layer of the epidermis?

A

Stratum corneum

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Q

What does the stratum basale do?

A

Replicate cells

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Q

What is does keratin do?

A

Water resistant’s

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Q

What does melanin do?

A

Produce and store pigment

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Q

What does melanosomes do?

A

Transfers pigment (protects DNA)

Q

What layer lets us know touch?

A

Stratum basale

Q

What does the epidermal dendritic cell do?

A

Initiate immune response

Q

What does thick skin have?

A

Sweat glands

Q

Where is stratum lucidum located?

A

Thick skin; sole and palm

Q

What does stratum corneum protect against?

A

Abrasion and infections

Q

What does thin skin have?

A

Sweat glands, sebaceous glands, and hair follicles

Q

What determines hemoglobin?

A

Oxygen

Q

What determines melanin?

A

UV exposure

Q

What determines carotene?

A

Some vegetables

Q

What causes nevus (mole)

A

Overgrowth of melanocytes

Q

What causes hemangiomas?

A

Blood vessel tumor

Q

What causes freckles?

A

Increase in melanocyte activity

Q

What tissue is in the papillary layer?

A

Areolar tissue

Q

What are friction ridges?

A

Fingerprints

Q

Two layers of dermis

A

Papillary and reticular layer

Q

What tissue is in the reticular layer?

A

Dense irregular CT

Q

What is the function of elastic fibers?

A

Stretch and recoil

Q

What function is collagen fibers?

A

Resist stress in one direction

Q

What does collagen and elastic fibers do?

A

Bundles functions

Q

What tissues are found in the subcutaneous layer?

A

Areolar and adipose CT

Q

What happens when collagen fibers are torn?

A

Stretch marks (striae)

Q

What are the functions of subcutaneous layer?

A

Protection, energy storage, insulation

Q

What is calcitriol?

A

Increases absorption of calcium and phosphate

Q

What is metabolic regulation?

A

Formation of vitamin D3 and produces calcitriol