Ch. 5 Integumentary System Flashcards
A slight sunburn is an example of a _____ burn.
First-Degree
Epidermis is characterized by being _______, whereas dermis is distinguished by being ______.
composed of stratified epithelial tissue; composed of connective tissue
An abrasion of the skin results in which of the following?
portal of entry of micrrorganisnm
A malfunction of the process of keratinization results in the condition known as
psoriasis
The diagram illustrates glands of the skin. What does “C” represent?
Eccrine Sweat Gland
Albinism develops due to
inherited mutant gene for melanin
In which layer of the epidermis are granules of keratohyalin formed?
Stratum Granulosum
The epidermis
Contains no blood vessels (avascular)
Acne is caused by
testosterone
sebum
abnormal keratinization of follicles
Propionibacterium
*All of these are factors
Eccrine sweat glands
aid in cooling the body
Integumentary System consists of what?
Skin, hair, glands and nails
What are the functions of integumentary system?
- Protection- Helps protect and reduces the harmful effects of the ultraviolet light
- Sensation- Has sensory receptors that can detect heat, cold, pressure and pain,
- Temperature Regulation
- Vitamin D production
- Excretion
List the 5 layers of epidermis
- Stratum Corneum
- Stratum Lucidum
- Stratum Graulosum
- Stratum Spinosum
- Straum Basale
What layer are they keratohyalin granules found in the 5 layers of epidermis?
Stratum Granulosum
Albinism
Is usually a recessive genetic trait that results from inability to produce tyrosinase
The blush tinge of skin due to a reduction of oxygen in the blood is called
cyanosis
Melanin
Is the group of pigments primarily responsible for skin, hair, and eye color
All the following statements concerning hair are true except one. Identify the exception.
The growth rate of all types of hair is the same
Hair growth occurs in cycles, with growth and resting stages.
In pattern baldness, those hair follicles present begin to produce vellus hair.
Some loss of hair is normal and indicates old hairs are being pushed out by new hairs.
*The growth rate of all types of hair is the same
Eccrine sweat glands differ from sebaceous glands
in terms of what is secreted
in their location in the body
because sebaceous glands are associated with hair follicles, whereas sweat glands are not
all of the above
all of the above
The diagram illustrate glands of the skin. What does “A” represent?
Sweat Pore
If you accidentally cut your arm and see connective tissue and fat, which layer(s) was/were cut
stratum corneum
stratum basale
dermis
hypodermis
all of these layers
*all of these layers
What does the structure “B” represent on the diagram?
Dermis
On coming inside from the cold, students notice that their checks are red. This results form
dilation of the blood vessels in the dermis of the cheeks
also known as vasodilation
By covering the whole surface skin acts as a protective barrier and plays a role in
Excretion
Keratinocytes
are responsible for the reduction of water loss form the skin
Another name for a bedsore
decubitus ulcer
As cells are pushed from the deeper portion of the epidermis toward the surface they ( 5 layers picture)
Are replaced by dividing cells from below
As cells are pushed from the deeper portion of the spiders toward the surface they ( 5 layers picture )
Are replaced by dividing cells from below
Body odor results from secretions from the ____ sweat glands.
Apocrine
Excessive shedding of this layer of the epidermis of the scalp is responsible for dandruff
Stratum Corneum
Goose-bumps on the skin are due to the contraction of the muscle called
Arrector pilli muscle
Melanin is produced only by
melanocytes
In which of the following regions of the body are apocrine sweat glands most numerous?
Axilla and groin
In cold weather ____ may result from reduced blood circulation through the skin.
Cyanosis
Fingertips and footprints are produced by projections into the epidermis called
Dermal papillae
Melanin
is absent in individuals known as albinos
Keratinization
produces layer of cells that resists abrasion
What does structure “C” represent on the diagram?
Hypodermis
All of the following substances can contribute to the color of skin. Of these, only ___ is of dietary origin.
Carotene
The diagram illustrates glands of the skin. What does “E” represent?
Duct of apocrine sweat gland
The diagram illustrates glands of the skin. What does “D” represent?
Apocrine sweat gland
A yellow pigment derived from plants that can impart a yellow color to the skin is
Carotene
An increase in body temperature causes
sweating
Exposure to ultraviolet light causes the skin to darken by stimulating the
activity of the enzyme tyrosinase
A plastic surgeon would most likely make a skin incision:
Parallel to the cleavage lines
Due to the contraction of smooth muscle in the walls of dermal blood vessels
body heat is conserved
baldness
is more common in men than in women
The figure illustrates keratinization in the epidermis. What layer of the epidermis is “A”?
Stratum Corneum
A subcutaneous injection delivers medication into the
Hypodermis
In which layer of the epidermis are lamellar bodies formed inside keratinocytes?
Stratum Spinosum
Nail cells are produced by the
nail matrix
nails
protect the ends of digits
What does structure “D” represents on the diagram?
Arrector pilli muscle
What does structure “D” represent on diagram?
Arrector pilli muscle
What doe structure “E” represent on the diagram?
Hair Follicle
What does structure “A” represent on the diagram?
Sebaceous Gland (Secretes oil) Example hair
The integumentary system has many functions, one of which is
Detection of heat and touch
