Chapter 6 - Integumentary System - Part 2 Flashcards
Accessory structures of the skin originate from the epidermis and include…
Nails, hair follicles, and skin glands
Each nail consists of a…
Nail plate and a nail bed`
The whitish half-moon area is called the…
Lunula
Lunula is the most active ____ of the nail…
Growth region
Nails grow from epithelial cells that…
Divide and become keratinized
At any time, 90% of hair is in the ____ phase.
Growth
Each hair develops from a group of epidermal cells at the base of a tubelike depression called a…
Hair follicle
The hair follicle extends from the surface into the dermis and contains the…
Hair root
The hair root is the portion of hair that is…
Embedded in the skin
A hair is composed of dead…
Epidermal cells
Genes determine hair colors by directing the type and amount of ____ that epidermal melanocytes produce.
Pigment
Androgenetic alopecia is also known as…
Pattern baldness
Muscle that attaches to each hair follicle, causes hair to stand up when cold or nervous…
Arrector pili muscle
Contain groups of specialized epithelial cells and are usually associate with hair follicles…
Sebaceous glands
Sebaceous glands release sebum and are known as…
Holocrine glands
Helps keep hairs soft, pliable, and smooth…
Sebum
Each of this gland consists of a tiny tube that originates as a ball-shaped coil in the deeper dermis or superficial subcutaneous layer.
Sweat gland
The most numerous sweat glands are called…
Eccrine glands
Eccrine glands respond to…
Body temperature
Sweat is mostly water, but it also contains small amounts of salts and wastes such as…
Urea and uric acid
Sweating is also a…
Secretory function
Sweat glands that develop a scent as skin bacteria metabolize them are called…
Apocrine glands
Apocrine sweat glands become active at puberty and can wet certain areas of the skin when a person is…
Emotionally upset, frightened, or in pain
Blackheads and whiteheads are collectively known as…
Comedones
Heat is a product of…
Cellular metabolism
The major heat producers in the body are the more active cells, such as the…
Skeletal muscle cells and cardiac muscle cells and cells of the liver
When warm blood reaches the ____, the _____ signals muscles in the walls of the dermal blood vessels to relax.
Hypothalamus
As dermal blood vessels dilate (vasodilation), more blood enters them, and some of the heat the blood…
Escapes to the outside
At the same time as vasodilation, deeper blood vessels contract (vasoconstriction), diverting blood…
To the surface (skin reddens)
The primary means of body heat loss…
Radiation
Heat moves from the body directly into the molecules of cooler objects in contact with its surface in…
Conduction
Continuous circulation of air over a warm surface is called…
Convection
When the body temperature rises above normal, the nervous system stimulates eccrine sweat glands to release sweat onto the surface of the skin. As this fluid evaporates, it carries heat away from the surface, cooling the skin. This is called…
Evaporation
Body temperature may rise in a condition called…
Hyperthermia (core body temp exceeding 106F)
What may result from prolonged exposure to cold or as part of an illness?
Hypothermia
Reverse
Nails, hair follicles, and skin glands
Accessory structures of the skin originate from the epidermis and include…
Reverse
Nail plate and a nail bed`
Each nail consists of a…
Reverse
Lunula
The whitish half-moon area is called the…
Reverse
Growth region
Lunula is the most active ____ of the nail…
Reverse
Divide and become keratinized
Nails grow from epithelial cells that…
Reverse
Growth
At any time, 90% of hair is in the ____ phase.
Reverse
Hair follicle
Each hair develops from a group of epidermal cells at the base of a tubelike depression called a…
Reverse
Hair root
The hair follicle extends from the surface into the dermis and contains the…
Reverse
Embedded in the skin
The hair root is the portion of hair that is…
Reverse
Epidermal cells
A hair is composed of dead…
Reverse
Pigment
Genes determine hair colors by directing the type and amount of ____ that epidermal melanocytes produce.
Reverse
Pattern baldness
Androgenetic alopecia is also known as…
Reverse
Arrector pili muscle
Muscle that attaches to each hair follicle, causes hair to stand up when cold or nervous…
Reverse
Sebaceous glands
Contain groups of specialized epithelial cells and are usually associate with hair follicles…
Reverse
Holocrine glands
Sebaceous glands release sebum and are known as…
Reverse
Sebum
Helps keep hairs soft, pliable, and smooth…
Reverse
Sweat gland
Each of this gland consists of a tiny tube that originates as a ball-shaped coil in the deeper dermis or superficial subcutaneous layer.
Reverse
Eccrine glands
The most numerous sweat glands are called…
Reverse
Body temperature
Eccrine glands respond to…
Reverse
Urea and uric acid
Sweat is mostly water, but it also contains small amounts of salts and wastes such as…
Reverse
Secretory function
Sweating is also a…
Reverse
Apocrine glands
Sweat glands that develop a scent as skin bacteria metabolize them are called…
Reverse
Emotionally upset, frightened, or in pain
Apocrine sweat glands become active at puberty and can wet certain areas of the skin when a person is…
Reverse
Comedones
Blackheads and whiteheads are collectively known as…
Reverse
Cellular metabolism
Heat is a product of…
Reverse
Skeletal muscle cells and cardiac muscle cells and cells of the liver
The major heat producers in the body are the more active cells, such as the…
Reverse
Hypothalamus
When warm blood reaches the ____, the _____ signals muscles in the walls of the dermal blood vessels to relax.
Reverse
Escapes to the outside
As dermal blood vessels dilate (vasodilation), more blood enters them, and some of the heat the blood…
Reverse
To the surface (skin reddens)
At the same time as vasodilation, deeper blood vessels contract (vasoconstriction), diverting blood…
Reverse
Radiation
The primary means of body heat loss…
Reverse
Conduction
Heat moves from the body directly into the molecules of cooler objects in contact with its surface in…
Reverse
Convection
Continuous circulation of air over a warm surface is called…
Reverse
Evaporation
When the body temperature rises above normal, the nervous system stimulates eccrine sweat glands to release sweat onto the surface of the skin. As this fluid evaporates, it carries heat away from the surface, cooling the skin. This is called…
Reverse
Hyperthermia (core body temp exceeding 106F)
Body temperature may rise in a condition called…
Reverse
Hypothermia
What may result from prolonged exposure to cold or as part of an illness?
