Chapter 6 The Integumentary System Review

Which describes keratin? Multiple choice question. a. A protein produced in cells of the epidermis b. A protein associated with skin color c. A fiber found in the hypodermis d. A lipid associated with the reticular layer of the dermis

A protein produced in cells of the epidermis

Which of the following describes the dermal papilla that is associated with hair? Multiple choice question. A sensory organ within the hair follicle The epidermal socket out of which the hair grows An extension of the vascular system into the hair bulb Site of hair growth

An extension of the vascular system into the hair bulb

Which of the following describes the dermal papilla that is associated with hair? Multiple choice question. Site of hair growth The epidermal socket out of which the hair grows An extension of the vascular system into the hair bulb A sensory organ within the hair follicle

An extension of the vascular system into the hair bulb.

Sensory receptors in the dermis and epidermis contribute to which function of the skin? Multiple choice question. a. Creating a barrier to water b. Vitamin D synthesis c. Protecting the body from harmful microorganisms d. Detecting changes in the environment

Detecting changes in the environment.

What are the two principal layers of the hair follicle? Multiple choice question. Epithelial root sheath and adipose tissue root sheath Connective tissue root sheath and adipose tissue follicle bed Epidermal root sheath and hypodermal tissue root sheath Epithelial root sheath and connective tissue root sheath

Epithelial root sheath and connective tissue root sheath

Which of the following is true about the most superficial layer of the skin? Multiple choice question. a. It is composed of dense connective tissue. b. It contains a good supply of blood vessels. c. It contains abundant keratin. d. It is called the dermis.

It contains abundant keratin.

Which feature of the skin protects the body from UV damage? Multiple choice question. a. Shedding of dead skin cells b. Rapid cell division in the stratum basale c. Sebaceous secretions d. Melanin deposited in keratinocytes

Melanin deposited in keratinocytes

The skin functions as an important barrier to which of the following? Multiple select question. a. Microorganisms b. Water c. Oxygen d. Vitamin D e. Ultraviolet radiation

a. , b. , e.

Apocrine glands are concentrated in which areas of the body? Multiple select question. a. Beard area (males only) b. Hands and feet c. Axillary region d. Scalp e. Groin and anal region

a. Beard area (males only) c. Axillary region e. Groin and anal region

Which statements about apocrine sweat glands are true? Multiple select question. a. They produce sweat that contains fatty acids. b. They occur in the groin, anal region, axilla, areola, and beard area. c. They use the apocrine mode of secretion.

a. They produce sweat that contains fatty acids. b. They occur in the groin, anal region, axilla, areola, and beard area.

Mammary glands are modified versions of which type of gland? Multiple choice question. Ceruminous Merocrine Endocrine Apocrine

apocrine

Which statements about apocrine sweat glands are true? Multiple select question. a.They use the apocrine mode of secretion. b. They produce sweat that contains fatty acids. c. They occur in the groin, anal region, axilla, areola, and beard area.

b. They produce sweat that contains fatty acids. c. They occur in the groin, anal region, axilla, areola, and beard area.

Which are accessory organs of the integumentary system? Multiple choice question. a. Nails, fingers, skin, and glands b. Sweat glands, muscle cells, skin, and fat c. Hair, nails, and cutaneous glands d. Hair, epithelia, and bones

c. Hair, nails, and cutaneous glands

_______ glands secrete a substance that combines with sebum to keep the eardrum protected and prevent foreign particles from entering the canal.

ceruminous

Fingernails and toenails are hard derivatives of the stratum _______ of the epidermis.

corneum

In a hair, the outermost layer of cells that overlap one another like shingles is called the _______.

cuticle

_______ cells are found in two of the epidermal layers and serve an immune function.

dendritic

The branch of medicine that deals with the integumentary system is called _______.

dermatology

Cells in the epidermis are nourished by blood vessels located in which of the following? Multiple choice question. a. Hyperdermis b. Dermis c. Subdermis d. Hypodermis

dermis

In which region of the body does the skin have the fewest sensory receptors? Multiple choice question. a. Dorsum of the hands b. Fingertips c. Soles of feet d. Palms of hands

dorsum of the hands

Within a hair follicle, the _______ root sheath is an extension of the epidermis, and lies adjacent to the hair root.

epithelial

True or false: Dendritic cells originate in the stratum basale.

false

True or false: The epidermis is highly vascular. True false question. a. True b. False

false

True or false: The stratum corneum is the thickest epidermal layer in thin skin.

false

Which term refers to the tube-like structures within which hairs grow? Multiple choice question. Shafts Follicles Roots Sheaths

follicles

John clenches his pen firmly against his finger when he takes notes in class. This repeated pressure on his finger has resulted in which of the following? Multiple choice question. a. The formation of a carbuncle b. A first degree burn c. The formation of a callus d. The growth of a wart

formation of a callus

Thermoregulation, sensory reception, vitamin D production and protection are all functions of the _______ system.

integumentary

Keratinocytes synthesize ______. Multiple choice question. a. collagen b. melanin c. keratin d. carotene

keratin

The epidermis is a barrier to ultraviolet rays, blocking much of the cancer-causing radiation from reaching the nuclei of cells called ______. Multiple choice question. a. tactile cells b. fat cells c. reticulocytes d. keratinocytes

keratinocytes

The majority of cells found in the epidermis are which of the following? Multiple choice question. Melanocytes Keratinocytes Fibroblasts Dendrocytes

keratinocytes

_______ is fine, downy, unpigmented hair that appears on the fetus in the last 3 months of development.

lanugo

The acid _______ is the protective film that gives skin its slight acidity.

mantle

A hair is formed by mitotic cells in which region? Multiple choice question. Matrix Shaft Piloerector Epidermis Root sheath

matrix

The hair _______ is a region of mitotically active cells that serves as the hair's growth center.

matrix

At the center of each hair is a loosely arranged core of cells and air spaces. What is the name of this region? Multiple choice question. Cuticle Medulla Cortex Follicle

medulla

The five types of cells found in the epidermis are stem cells, keratinocytes, tactile cells, dendritic cells, and _______.

melanocytes

Hemoglobin imparts which color to healthy skin? Multiple choice question. a. Pink b. Blue c. Brown d. Yellow

pink

The part of the hair enclosed in the follicle is known as the hair _______.

root

_______ glands are flask-shaped, with short ducts that usually open into a hair follicle and directly onto to skin.

sebaceous

The part of a hair that projects from the surface of the scalp or skin is called the hair _______.

shaft

The deep end of the follicle widens to form a bulge. What is its function? Multiple choice question. Area of implantation for baldness Source of stem cells for follicle growth Area where gray hair is displayed Source of new melanocytes for hair color

source of stem cells for follicle growth

The deep end of the follicle forms a bulge that serves as a source of _______ cells for follicle growth.

stem

A splinter penetrates to the deepest layer of the epidermis on your hand. What is this layer called? Multiple choice question. Stratum spinosum Stratum lucidum Stratum corneum Stratum granulosum Stratum basale

stratum basale

A splinter penetrates to the deepest layer of the epidermis on your hand. What is this layer called? Multiple choice question. a. Stratum basale b. Stratum spinosum c. Stratum lucidum d. Stratum granulosum e. Stratum corneum

stratum basale

Which of the following layers of the epidermis contains cuboidal stem cells, keratinocytes, and melanocytes? Multiple choice question. a. Stratum basale b. Stratum corneum c. Stratum lucidum d. Stratum spinosum

stratum basale

The most superficial layer of the epidermis is the ______. Multiple choice question. stratum basal stratum corneum stratum granulosum stratum lucidum

stratum corneum

_______ cells are skin cells with a sensory role.

tactile

Which type of hair includes scalp hair? Multiple choice question. Terminal hair Vellus Thick hair Lanugo

terminal

The texture of hair (round, wavy or straight) is primarily related to which of the following? Multiple choice question. The amount of sunlight exposure The number of times it is washed The cross-sectional shape The brand of shampoo used

the cross-sectional shape

Tactile cells are receptors for which of the following? Multiple choice question. a. Chemical stimuli b. Touch c. Light d. Heat

touch

Which structures guard the nostrils and ear canals, preventing particles from entering? Multiple choice question. Vibrissae or guard hairs Microvilli or cilia Cilia or guard hairs Stereocilia or microvilli

vibrissae or guard hairs