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Integumentary System

Unit 2.03 Health Science 1

What is the dermis? a strong, flexible, connective tissue layer. its thick with 2 layers.
What gland is the disorder acne associated with? the sebaceous gland
What are the major reigons of the hair shaft? the cortex, cuticle, and medulla.
What muscles attached to the hair follicles cause goose bumps? arrector pili muscle
What is keratin? a protein that is the primary component of skin
What are sudoriferous glands? they produce sweat and serve in thermoregulation to cool the body down
What is the stratum corneum? many layers of dead cells, protect against abrasions
How do nutrients reach the surface of the skin ? through diffusion from blood vessels of dermis
Why does the hypodermis act as a shock absorber? the major part of its make-up is adipose
What are the functions of the integument? to protect, synthesize, regulate temperature, prevent water loss and sensory reception
Which layer of the epidermis is responsible for cell division and replacement? stratum germinativium
Why are keratinocytes the most important of the epidermal cells? they help to protect. produce keratin
What is the most important factor influencing hair growth nutrition and hormones
What is the composition of the secretions of the eccrine glands (sweat glands) 99% of water, NaCl, trace of amounts of wastes, lactic acid and vitamin c
What are the two types of sweat glands? eccrine and apocrine
What stimulates the sebaceous glands to secrete sebum ? hormones
Wwhat is the first threat to life from a massive third-degree burn? dehydration
How would a physician estimate the volume of fluids lost in a severely burned patient? the rules of 9
The design of a person's epidermal ridges is determined by the manner in which papillae rest upon the dermal ridges to produce specific patter known as handprints, footprints, and finger prints. what other information is true about prints and ridges genetically determined and unique to each person
What part of the skin is responsible for shock absorption and located in the hypodermis? adipose
What part of the skin pulls the hair follicle into an upright position? arrector pili muscle
What are the parts of the integumentary system? Skin, hair, nails, sweat glands, and sebaceous glands
What are the three layers of skin? Epidermis, dermis, and subcutaneous layer
What is a 1st degree burn? Skin reddened and painful; no blisters; epidermis is damaged
What is a 2nd degree burn? Skin reddened and painful; both epidermis and dermis are damaged
What is a 3rd degree burn? Charred; epidermis and dermis are burned away; subcutaneous layer is exposed
What are the functions of the integumentary system? Two-way protective barrier, temperature regulation, houses sensory receptors, and secretes important fluids
What is the largest organ in the body, and how much does it weigh? Skin, and more than 20 lbs (in adults)
Skin is also called...? Integument, and Cutaneous membrane
Sensory receptors are located in...? Middle layer - Dermis
What do sensory receptors detect? Temperature, pain, touch, and pressure
Sweat glands...? 1) Assists body in maintaining internal temperature 2) Create cooling effect when sweat evaporates
Sebaceous glands...? 1) Oil glands 2) Produce sebum 3) Lubricates the skin surface
Temperature regulation 1 To cool skin...? 1) Sweat evaporation 2) Dilate superficial blood vessels to release heat
Temperature regulation 2 To conserve heat...? 1) Constrict superficial blood vessels to keep warm blood away from surface 2)Continuous fat layer acts as insulation
Epidermis is defined as..... Thin outer membrane layer, and composed of stratified squamos epithelium
Dermis is the ...... Middle, fibrous connective tissue layer, and composed of collagen fibers (also known as "corium")
Subcutaneous Layer is known as..... Innermost layer of fatty tissue and fat cells called lipocytes (also known as "fascia" or "hypodermis")
What are Melanocytes? Special cells or basal layer, and produce black pigment melanin
What do Melanocytes do? 1) Protects against UV rays from the sun 2) Gives skin its color
Hair is made up of...? Hair follicle, hair root, hair shaft, arrector pili muscle
What is the arrector pili? 1) Slip of smooth muscle 2) Causes hairs to "stand up"
Nails are made up of...? Nail body (flat bed of keratin), nail bed (connects nail body to underlying tissue), and lunula (half-moon white area at base of nail)
Created by: HSEwithMrsK
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