Lab exercise 5: Integumentary System
composed of apposed fibers, blood vessels, nerves, sensory receptors, hair follicles, and gland
Dermis
This type of hair grows to a certain length and then stops. It is found in the axilla, groin, arms, legs, eyebrows, eyelashes
Determinate Hair
These glands are associated with hair follicles and are larger than sweat glands
Sebaceous glands
The largest organ of the body
Skin
The integument system consist mostly of this membrane
Cutaneous
This structure is located in the center of the bulb and is a region that has blood vessels and nerves that reach the hair bulb
dermal papilla
The two main regions of the integument
epidermis and dermis
The cuticle of the nail is known as the
eponychium
The part of the nail that you clip off is called the
free edge
The region under the free edge of the nail
hyponychium
the epidermis is made of..
keratinized strafed squamous epithelium
milk glands
lactiferous glands
The small white crescent at the base of the nail is called the
lunula
The nail .... undergoes cell division to produce the nail root
matrix
The central portion of the hair is known as the
medulla
Melanocytes produce a brown pigment called
melanin
The layer under the nail plate
nail bed
The nail its self is called the
nail body
the ridge above the nail groove
nail fold
a depression between the body of the nap and the skin of the fingers
nail groove
The dermis' two major regions
papillary layer and reticular layer (deeper)
What glands secrete an oily material called sebum
sebaceous glands
oil glands
sebaceous glands
The hair consists of three parts the...
shaft, root, and hair bulb
In thick skin the deepest layer of the epidermis
stratum basale
The stratum basale and stratum spinosum are sometimes referred to as the
stratum germinativum
sweat glands
sudoriferous glands
The contraction of this muscle makes hair "stands on end"
Piloerector (arrector pili) muscle
This type of hair continues to grow
Indeterminate hair
Consists of the skin, hair, nails, and various glands
Integumentary System
specialized cells in the stratum basale
Melanocytes
the most common sweat glands; are sensitive to temperature and produce sweat
Merocrine sweat glands
What portion of the hair contains pigments and gives hair its color?
The cortex
secrete water and a higher concentration of organic acids (type of sweat gland)
apocrine sweat glands
the stratum basale is connect to the dermis by what?
basement membrane
earwax glands
ceruminous glands
majority of fibers of the dermis
collagenous
The five stratum layers... superficial first
corneum lucidum granulosum spinosum basale
the medulla is enclose by an outer layer called the
cortex
The layer superficial to the cortex is the
cuticle
