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