Anatomy Chapter 10
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Anatomy Chapter 10
What is the scientific study of skin?
Clinically, what might an overall paleness of the integument indicate?
Clinically, what might an overall redness of the integument indicate?
an increased body temp from exertion or infection
Clinically, what might a localized redness of the integument indicate?
localized irritation from trauma or infection such as diaper rash
What organ is in the integument?
Why is the skin considered an organ?
it is made up of all 4 tissue types & performs a specific function to protect the body
Which of the four primary tissue types make up the integument?
What are the two layers of the integument?
dermis & epidermis
What layer of tissue lies just deep to the integument?
What type of tissue makes up the epidermis?
keratinized stratified squamous epithelium
The epidermis lacks blood vessels. What medical term describes this?
What three pigments contribute to skin color?
hemoglobin, melanin, & carotene
What is a harmless localized overgrowth of melanin-forming cells?
a nevus (mole)
What is a yellowish or brown spot caused by localized areas of excessive melanocyte activity rather than in increase in melanocyte number?
What is a congenital anomaly that results in skin discoloration due to blood vessels that proliferate and form a benign tumor?
What are contours of the skin surface that form ridge patterns on the palmar aspect of the hand and the plantar surface of the foot?
What layer of the dermis is superficial and contains capillaries and sensory receptors?
What layer of the dermis is deeper and contains large amounts of collagen and consists primarily of dense irregular connective tissue?
What are lines of cleavage?
parallel bundles of collagen
Nerve fibers are extensively dispersed throughout the dermis. What is this property of the distribution of nerves to or in a part of the body?
What two processes change the diameter of blood vessels and in the skin help regulate body temperature and blood pressure?
vasoconstriction & vasodilation
What are nails?
scalelike modifications of the epidermis that form on the dorsal tips of fingers and toes
What are the functions of the nails?
protection & improve grip
What is the area of active growth in a nail?
What is the whitish semilunar area at the proximal end of a nail?
What is hair?
a filament of keratinized cells
What is the fine, unpigmented, downy hair that first appears on the fetus in the last trimester?
What is the fine, unpigmented or lightly pigmented hair found on the arms and legs?
What is the usually course, pigmented hair found in the scalp, eyebrows, eyelashes, axilla, and pubic region and the faces of adult males?
What is the swelling at the base of the hair and lying within the dermis?
What is the portion of a hair from the bulb to the surface?
What is the portion of the hair that extends beyond the skin surface?
What is the oblique tube of epithelium that surrounds a hair?
What smooth muscles produce "goose bumps"?
arrector pili muscle
What type of sweat gland functions in thermoregulation?
What type of sweat gland produces a distinct odor?
What type of gland produces sebum to keep the skin and hair from becoming dry?
What type of gland is located within the ear?
What glands produce milk?
What germ layer gives rise to the epidermis?
What germ layer gives rise to the dermis?