Integument lecture questions Flashcards
A surgeon, who is about to make a surgical incision that has minimal scaring, wants to cut:
across the lines of cleavage.
parallel to the lines of cleavage.
parallel to the flexure lines.
It does not matter since all incisions scar.
parallel to the lines of cleavage.
Albinism is the genetic lack of melanin that results in a white coloration of the skin.
True
False
True
Each hair grows in an oblique epithelial tube called a: hair root hair root plexus shaft hair follicle hair papilla
hair follicle
The youngest keratinocytes are found in the stratum basale.
True
False
True
A burn that destroys just the epidermis and dermis, but no underlying tissues) is a: first degree burn. third degree burn. second degree burn. fourth degree burn.
third degree burn.
What type of tissue is found in the most superficial layer of skin? Simple squamous epithelium Stratified squamous epithelium Reticular Connective tissue Dense irregular connective tissue Areolar connective tissue
Stratified squamous epithelium
The stratum \_\_\_\_\_\_ is composed of up to 30 layers of cornified, dead cells. spinosum lucidum granulosum corneum basale
corneum
The stratum \_\_\_\_\_\_\_\_\_ is composed of 3-5 layers of flattened keratinocytes containing dark staining keratin and keratohyalin granules. basale spinosum granulosum lucidum corneum
granulosum
The stratum \_\_\_\_\_\_\_ is a single layer of columnar or high cuboidal cells resting on a basement membrane. granulosum spinosum corneum lucidum basale
basale
Ethnic differences in skin color are primarily caused by differences in:
the number if keratinocytes.
the quantity of hemoglobin carried in the blood.
UV radiation exposure.
the quantity of melanin produced.
the number of melanocytes.
the quantity of melanin produced.
Freckles are elevated patches with an abnormal coloration of the skin.
True
False
False
Hot weather, exercise, embarrassment, and anger can cause a redness of the skin called: pallor. erythema. jaundice. hematoma. cyanosis.
erythema.
what is redness of skin due to capillary enlargement in the dermis called?
Erythema
Bedsores result from
a chronic reduction in the blood supply to a portion of the skin
Hair and nails are composed of collagen.
True
False
False
Which of the following best describes the composition of the dermis? papillary plexus flexure lines friction ridges lines of cleavage
friction ridges
Folds that occur at or near joints where the skin is tightly secured to deeper structures so it cannot slide easily are found in the _________ layer.
reticular layer
Blood vessels in the __________ provide a hair with its sole source of nutrition.
hair papilla
Which cutaneous glands are concerned with cooling the body?
Eccrine glands
Select the statements that are true regarding the ceruminous glands. Secrete earwax Blockage and infection can cause pimples Usually open up into a hair follicle Waterproof the ear canal Secrete sebum
Secrete earwax
Waterproof the ear canal
Which cancer arises from the deepest layer of the skin’s epidermis and rarely metastasizes?
Basal cell carcinoma
Which type of cell is involved with squamous cell carcinoma?
Keratinocytes
Which specific layer is involved with squamous cell carcinoma?
Stratum spinosum
A hair cycle consists of three developmental stages in which order?
Anagen, catagen, and telogen
The stratum \_\_\_\_\_\_\_ is composed of many layers of keratinocytes that are firmly attached to each other by desmosomes. This layer also contains dendritic cells. spinosum granulosum corneum basale lucidum
spinosum
The layer of skin that contains the blood vessels and nerves closest to the surface of the skin is the ________ layer
papillary
The strength and elasticity of the skin is provided by the
dermis.
When blood flow through the skin is very low, the skin appears pale and white. This is called
pallor.
A deficiency of oxygen causes a blueness of the skin called
cyanosis.
Select the following statements that are true about the epidermis.
Composed of keratinocytes
Contains hair follicles
Contains sweat glands
Composed of loose areolar and adipose connective tissues
Also known as the superficial fascia
Is avascular
Composed of keratinocytes
Is avascular
The youngest keratinocytes are found in the stratum basale.
True
False
True
