keratinization and the epithelial system
If you take a cold shower, the blood vessels in the dermis will ____________ in order to maintain homeostasis.
constrict
Stratum corneum
contains dead cells that are filled with keratin
Stratum lucidum
contains flattened keratinocytes filled with the protein keratohyalin dispersed throughout the cell
Stratum basale
contains keratinocyte stem cells
When the blood vessels in the dermis constrict, blood from from the deeper tissues to the dermis decreases; therefore, heat loss from the body ____________ .
decreases
The subcutaneous layer is ____________ to the dermis.
deep
When you are hot, blood vessels in the dermis _____________ in order to maintain homeostasis.
dilate
When the skin develops a reddish color due to a temporary increase in blood flow, the condition is called:
erythema
Blood vessel dilation in the dermis results in _________ heat loss from the skin, and blood vessel constriction results in _______ heat loss from the skin.
increased, decreased
When blood vessels in the dermis dilate and promote blood flow from the deeper tissues to the skin, the result is that heat loss from the body ____________ .
increases
The components of the subcutaneous layer allow it to provide ____________ for the body.
insulation
Stratum granulosum
keratohyalin accumulates in the cytoplasm of the cells
Stratum spinosum
lipid-filled lamellar bodies form inside the keratinocytes
The vesicles that contain melanin are called ______.
melanosomes
The subcutaneous layer is usually ____________ in women than in men.
thicker
Fingernails are comprised of:
thin, dead scaly cells
Select the regions that are composed of loose connective tissue.
Epidermis of the skin Reticular layer of the dermis Subcutaneous tissue or hypodermis
Which region of the nail contains the stratum basale layer?
The matrix
The subcutaneous layer consists of areolar connective tissue and ____________ connective tissue.
adipose
The connective tissue fibers that extend from the dermis into the subcutaneous layer help ____________ the skin in relation to underlying structures.
stabilize