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Integument system
Integumentary System
31
Anatomy
Undergraduate 2
01/25/2012

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Term
What Anchors the epidermis to the basement membrane, providing structural support to the stratum basale?
Definition
Hemidesmosomes
Term
Subcutaneous tissue is composed of:
Definition
Loost Connective Tissue and Adipose Tissue
Term
The papillary layer of the dermis is the most superficial dermal layer:
T/F
Definition
True
Term
The organs of the integumentary system have several functions. Which component best serves as thermal insulation?
Definition
Hypodermis
Term
The group of pigments known collectively as ________ is responsible for protecting genetic material of skin cells from UV Damage:
Definition
Melanin
Term
Dark brown to black pigmentation of the skin results from:
Definition
Deposition of melanin by melanocytes
Term
List components of the dermis:
Definition
Fibers
Blood Vessels
Nerve Fibers
Glands
Term
Subcutaneous tissue is composed of:
Definition
Loose connective tissue and Adipose Tissue
Term
What is not a function of hair:
Definition
Production of vitamin D
Term
The funciton of vitamen D include:
Definition
Stimulating the uptake of calcium and phosphate from the intestines.
Promoting calcium and phosphate release from bones.
Reducing calcium loss from the kidneys
Term
Which strata in the epidermis contains cells that are still mitotic?
Definition
Cells in both the stratum basale and the stratum spinosum
Term
Hair is divided into the hair _________, which protrudes above the surface of the skin, and the hair ________, located below the surface:
Definition
Shaft; Root
Term
What statement applies to the arrector pili:
Definition
Consist of smooth muscle cells
Extend from the dermal root sheath to the papillary layer of the dermis.
Are associated with hair follicles
Term
List the event of the growth stage of hair in order:
Definition
1. Matrix cells differentiate, become keratinized, and die.
2. The hair grows longer as cells are added at the base of the hair root.
3. Hair growth stops.
4. The hair follicle shortens and holds the hair in place.
Term
Subcutaneous tissue is composed of:
Definition
Loost CT and Adipose Tissue
Term
The organs of the integumentary system have several functions. Which component best serves as thermal insulation?
Definition
Hypodermis
Term
Indicate the statement describing full thickness burns:
Definition
1. Involve the complete destruction of the epidermis and dermis
2. Also called third degree burns.
3.
Term
One way to minimize your chance of getting skin cancer is to:
Definition
Use sunblock
Term
True or false:
If the epidermis is damaged, the undamaged part of the hair follicle within the dermis can be a source of new epithelium?
Definition
True
Term
List the components of the dermis:
Definition
Fibers
Blood Vessels
Glands
Nerve Fibers
Term
What is the deepest layer
Definition
Reticular Layer
Term
Hair is produced in cycles that involve a _________ stage and a _________ stage.
Definition
Growth and resting
Term
What are the steps in vitamen D synthesis (in order):
Definition
1. The skin is exposed to UV light.
2. The precursor molecule 7-dehydrocholesterol, is converted into cholecalciferol.
3. Cholecalciferol is released into the blood; it travels to the liver and kidneys.
4. Hydroxide Ions are added to Cholecalciferol
5. Active vitamin D (calcitriol) is formed.
Term
Ultimately, all of the epidermal cells originate from:
Definition
Stem cells in the stratum basale
Term
The smooth muscle associated with hair follicles is called __________:
Definition
Arrector pili
Term
A _________ junction holds cells together and seals off the space between adjacent cells making it difficult for substances to pass between cells.
Definition
Tight
Term
The intercellular junction called a ____________ allows the flow of ions between cells, transmitting electrical excitation from cell to cell.
Definition
Gap Junction
Term
Haline cartilage is included in the following:
Definition
Articular Cartilage
Fetal Skeleton
Costal Cartilage
Term
A(n) ____________ bland consists of a single secretory cell found in a nonsecretory epithelium.
Definition
Unicellular
Term
Indicate the best type of epithelium that is best suited for allowing diffusion of substances, as would be found lining the air sacs of the lungs.
Definition
Stratified Squamous
Term
The primary function of ________ is to pump blood.
Definition
Cardiac
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