CH 5
The two major types of tissue that make up the skin are ________.
connective and epithelial
When the arrector pili muscle is stimulated, it pulls on the hair follicle, causing ________.
the hair to stand up ("goose bumps")
identify the layers of the epidermis.
Stratum corneum Stratum lucidum Stratum granulosum Stratum spinosum Stratum basale
Identify the order of layers that a piece of glass would puncture as it passes through the skin on the palm of the hand.
Stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, stratum basale, dermal papillae
Which gland is responsible for odorous secretions concentrated in the armpits and groin?
apocrine sweat gland
nail bed
area of epidermis below the nail body
Which of the following is a bundle of smooth muscle cells that connects to each hair?
arrector pili
dermis
deep layer of the skin; it is made of a papillary and reticular layers.
Which layer of the skin is labeled
epidermis (most superficial layer of the skin.)
Through which mechanism does perspiration function in cooling the body?
evaporation
hich of the following can contain large quantities of adipose tissue, muscle cells, blood vessels, nerve cells and no vital organs?
hypodermis
The loose connective tissue that separates the integument from deeper tissues and organs is called the
hypodermis or subcutaneous layer.
The pale crescent or half-moon at the base of the nail is called the __________.
lunula
Epidermal cells synthesize this vitamin when exposed to sunlight.
vitamin D3
Sebaceous glands
inhibition of the growth of bacteria
In which of the epidermal layers are the cells undergoing mitosis?
stratum basale
merocrine
sweat glands, or eccrine sweat glands, open onto the surface of the skin and produce most of the sweat for the body
A burn that destroys the epidermis as well as the hair follicles is classified as a ________ burn.
third-degree
free edge
tip of the nail that extends beyond the nail body.
identify the parts of the structures of the cutaneous membrane and associated structures (1 of 2)
Epidermis Papillary Layer Dermis Reticular Layer
Parts of the Hair and Hair Follicle
Hair shaft Hair root Hair sheath Hair papilla
The following events are part of the skin repair process. In which order do they occur? Phagocytosis of pathogens and debris Formation of scar tissue Inflammatory response Formation of scab
Inflammatory response Formation of scab Phagocytosis of pathogens and debris Formation of scar tissue
How would you explain to your roommate, who has never taken an A&P class, why it is that a superficial cut hurts less than a deep cut?
Nerve fibers are located in the reticular layer of the dermis of the skin
The protein that contributes to many of the skin's protective qualities is called ________.
keratin
Which of the following is a brown, yellow-brown, or black pigment produced in the epidermis?
melanin
identify the parts of the structures of the cutaneous membrane and associated structures (2 of 2 )
(Accessory Structure) Hair shaft Sebaceous gland Arrector pili muscle Hair follicle Sweat gland Hypodermis
The most superficial layer of the dermis is the __________.
papillary layer
Merocrine
regulation of body temperature
Melanocytes
produce melanin, a brown pigment found in the skin.
hair root
anchors the hair into the skin and is found below the surface of the skin.
Structure of a Nail
Free Edge Nail body Cuticle Nail bed Nail root Lunula
Glands that are located in the passageway of the external ear are called ________ glands.
ceruminous
Which of the following structures are responsible for the formation of fingerprints?
Epidermal ridges and dermal papillae
Which of the following structures are composed of dead cells? Nail body Hair shaft Stratum corneum All of the structures are composed of dead cells.
All of the structures are composed of dead cells.
Identify the structures that are responsible for the stretching of the skin during pregnancy.
Elastic fibers found in the reticular layer of the dermis
Why would the ink of permanent tattoos be deposited in the dermis, and not the epidermis of the skin?
The epidermis is continually replaced by new cells as old cells are shed.
Which of the following is an oil gland that secretes into hair follicles?
sebaceous gland
What is the deepest epidermal layer called?
stratum basale
Which layer of the epidermis is labeled
stratum corneum (is the thickest layer of the epidermis and is the most superficial layer of the epidermis.)
Since the epidermis is avascular, how do the epidermal cells obtain their nutrients?
From the blood vessels in the adjacent dermis
