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Integumentar Seminar

Bio 3 Seminar

QuestionAnswer
What are the 3 layers of skin? Identify them on a graph Epidermis, dermis and hypodermis
What glands can we find in the integumentary system and where can we find them? Identify them on a diagram 1) Sweat glands (All body exept lips, external ear canal, nail bed, clitoris and labia minora) 2) Sebaceous glands (All body except on palm of hands and soles of feet). Sweat glands are more deep into the skin than sebaceous glands.
In which layer of skin can we find the sweat glands and the sebaceous glands? Sweat glands in the dermis and the sebaceous glands in the dermis (makes sense since sweat glands is more deep in, and dermis is under the epidermis:)
What is a secondary structure of the integumentary system? Give the function and the location Hair follicles. Anchors the hair to the scalp. Found in the dermis layer.
What is the difference between thick and thin skin? Thin skin is found everywhere except on the palsm of the hands and the soles of the feet while thick skin is found on thepalsm of the hands, fingertips and soles of feet. Thin=Hair and Thick=Hairless
Explain homeostasis (temperature regulation) If body temperature rises, hypothalamus sends signal to sweat glands to produce sweat and blood vessels dilate (vasodilation), which allows heat to be drawn out of the skin. The body temp. goes back to normal.
What are the 3 diseases of the integumentary system? Skin cancer (uncontrolled growth of skin cells), eczema (red and itchy skin) and alopecia (hair loss)
What are the causes of skin cancer? Exposure to UV light
What are the causes of eczema? Genetics, environment and stress
What are the causes of alopecia? Genetic, stress and hormonal changes
What are the symptoms of skin cancer? A=Asymmetry B=Border C=Colour D=Diameter E=Evolving
What are the symptoms of alopecia? Hair loss
Created by: Malayka
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