Skin HW
Which layer of the skin contains blood vessels AND nerve fibers?
Dermis
integument order
epidermis,dermis, hypodermis
The epidermis is very vascular.
false
Check all the statements that are true regarding the subcutaneous layer (hypodermis).
-The subcutaneous layer is not part of the integument. The subcutaneous layer is not part of the integument. Correct -The subcutaneous layer consists of areolar and adipose connective tissue. -One of the functions of the subcutaneous layer is thermal insulation.
Stratum corneum
20-30 layers of dead keratinocytes
Which layer of the epidermis is closest to the surface?
Stratum Corneum
In which layer of the epidermis are cells constantly dividing?
Stratum basale
melanin
is a pigment, protects the skin from UV radiation, is located in the epidermis
The arrector pili muscle
is a smooth muscle, causes hair to "stand on end", contracts when cold forming goos bumps
Check all that are a function of the integument.
protection, prevention of water loss, temperature regulation, immune defense
Which type of gland opens into hair follicles and secretes sweat after puberty
Apocrine sweat glands
What is responsible for skin color?
Carotene, Melanin, Hemoglobin
Stratum spinosum
Contains keratinocytes and dendritic cells
Stratum basale
Deepest layer
What type of gland is associated with hair follicles?
Sebaceous glands
What happens to cells when they move from the epidermis to the surface of the skin?
They die
Stratum lucidum
Thin, clear layer
Stratum granulosum
Three to five layers of keratinocytes
Keratin is
a waterproof protein.
The integument consists of the epidermis, which is composed of _____________, and the dermis, which is composed of ____________ connective tissue.
stratified squamous epithelium; dense irregular and areolar