Term
| The three fundamental layers of cells |
|
Definition
-epidermis
-dermis
-hypodermis |
|
|
Term
| Basic functions of the integument |
|
Definition
-protection
-thermoregulation
-immune function
-production of vitamin d
-excretion
-communication |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
One of the three layers of the epidermis
— the bottommost layer consists of simple cuboidal or columnar e.t.
— keratinocytes capable of dividing
— melanocytes
— touch and pressure detecting cells |
|
|
Term
|
Definition
One of the three layers of the epidermis
— middle layers consist of stratified cuboidal e.t.
— keratinocytes that are non-dividing and beginning to fill with the protein keratin
— some dendritic cells that function in immunity
— some melanocytes |
|
|
Term
|
Definition
One of the three layers of the epidermis
— stratified squamous e.t.
— composed of corneocytes
— completely dead and filled with the protein keratin
— cells slough off in a process called de-squamation |
|
|
Term
|
Definition
-One of the most common types of cells that comprises the epidermis
-produce keratin |
|
|
Term
|
Definition
| One of the most unusual and prominent cells that comprises the epidermis. Occurs primarily in areas of the body exposed to ultraviolet light and produces melanin. |
|
|
Term
|
Definition
| The most superficial layer of the dermis |
|
|
Term
|
Definition
| The more deeper layer of the dermis. Contains the secretory portion of sweat glands, oil glands, and hair follicles |
|
|
Term
|
Definition
— composed of adipose connective tissue and loose connective tissue.
— functions in insulation, as an energy reservoir, and loosely binds skin to underlying structures |
|
|
Term
|
Definition
| Associated with hair follicles. Produces an oily secretion called sebum. |
|
|
Term
|
Definition
| A smooth muscle that is attached to each hair follicle. When contracted during cold or fright it causes the hair to stand on end. |
|
|
Term
|
Definition
| Inner portion of a hair shaft |
|
|
Term
|
Definition
|
|
Term
|
Definition
| Part of hair that lies beneath the surface of the skin |
|
|
Term
|
Definition
| Tube-like structure that invaginates into the dermis. |
|
|
Term
|
Definition
| outer portion of a hair shaft |
|
|
Term
|
Definition
| thick, keratinized epidermal cells that occur on fingers and toes |
|
|
Term
|
Definition
| whitish crescent found on nail beds |
|
|
Term
| Sweat (sudoriferous) glands |
|
Definition
| the most common type of skin glands. classified as either eccrine or apocrine glands. |
|
|
Term
|
Definition
| he most numerous sweat glands in the body. They produce a thin, watery secretion that has aboundant salts, ammonia, wric acid, and other traces of minerals. They function to eliminate waste products, but serve a primary function in thermoregulation. |
|
|
Term
|
Definition
| Specialized sweat glands that release pheromones. located deep in the hypodermis in the axillae, inguinae, areolae of the breast, and the anus. |
|
|
Term
|
Definition
| modified apocrine glands that occur in the external auditory canal. The secretions mix with sebaceous gland secretions to form a yellowish waxy secretion called cerumen. It has a waterproofing effect and antifungal effects. |
|
|
Term
|
Definition
| Skin, exocrine glands in skin, hair and nails |
|
|
Term
|
Definition
| The largest organ in the body in terms of area |
|
|
Term
|
Definition
-topmost/uppermost layer
-keratinized stratified squamous epithelium
-avascular
-consists of 4 or 5 layers |
|
|
Term
|
Definition
-middle layer
-dense irregular connective tissue
-contains nerve endings, hair follicles, glands
-dermal papillae |
|
|
Term
| Hypodermis or superficial fascia |
|
Definition
-subcutaneous tissue underneath dermis
-stores fat and helps anchor skin
-areolar CT and adipose tissue |
|
|
Term
|
Definition
-only seen on thick skin
-2-3 layers of dead, anucleate cells |
|
|
Term
|
Definition
-20-30 layers of dead, anucleated cells
-outer cells are constantly shed |
|
|
Term
| Merkel cells (tactile cells) |
|
Definition
-stratum basale
-tactile (touch) sensation |
|
|
Term
|
Definition
-stratum spinosum
-ingest bacteria and foreign debris |
|
|
Term
|
Definition
|
|
