A&P Chapter 5

Which of the following skin disorder involves inflammation of sebaceous glands caused by bacteria which thrive in the lipid-rich sebum

acne

Which of the following best describes the events occurring at point A in the diagram of deep wound healing shown below

blood clot is forming

Which of the following structures found in the skin help prevent water loss and inhibit bacterial growth on the surface of the skin?

oil glands

Which of the following is a common characteristic of thin skin

presence of sebaceous glands

This type of exocrine gland is a simple, branched acinar gland connected to a hair follicle.

sebaceous gland

Constant exposure of skin to friction stimulates the formation of a callus, which is the thickening of the ________ of the epidermis.

stratum corneum

This layer of the epidermis contains layers of flattened keratinocytes that are going through apoptosis.

stratum granulosum

In the diagram of skin shown below, which labeled structure generates fingerprints?

A

In the figure of a sagittal section of a fingernail shown below, where is the nail root

A

Which structure in the figure produces a protein that helps protect the skin and underlying tissues from heat, microbes and chemicals

A

In the photomicrograph of a portion of thick skin shown below, which layer is the stratum

D

Which structure in the figure produces a pigment that contributes to skin color and absorbs UV radiation

D

In the photomicrograph of a portion of thick skin shown below, which layer is the stratum basale

E

Which letter is pointing to the subcutaneous layer of the skin in the figure

E

Which of the primary germ layers of the embryo does the epidermis of the skin develop from?

Ectoderm

This layer of the skin is composed of a keratinized stratified squamous epithelium

Epidermis

Which of the following best describes the events occurring at point B in the diagram of deep wound healing shown below

Epithelium is migrating across wound

In the diagram, which is a melanocyte

F

In the diagram, which layer is the stratum granulosum

G

Which structure is an eccrine sweat gland

G

in the diagram of skin shown below, where is the reticular region of the dermis

H

This is another name for the subcutaneous layer.

Hypodermis

In the diagram, which layer is the stratum corneum

I

Which structures are dermal papillae

I

In the figure of a sagittal section of a fingernail shown, where is the eponychium (cuticle)?

B

In the photomicrograph of a portion of thick skin shown below, which layer is only seen in thick skin

B

This pigment secreted by specialized cells in the skin is capable of absorbing ultraviolet light.

Keratin

This epidermal cell has a role in immunity and disease resistance.

Langerhans cells

Albinism is the inherited inability to produce

melanin

Which of the following chemicals does NOT contribute to the color of human skin

melatonin

Which of the following terms refers to an irregular tear of the skin

laceration

This is fine nonpigmented hair that covers the body of the fetus.

lanugo

Characteristics of thick skin include

All of these choices are correct.

In the diagram of a hair root shown, where is the cuticle of the hair

C

In the figure of a sagittal section of a fingernail shown, where is the lunula

C

Which structure in the figure detects touch sensations

C

in the diagram of skin shown below, where is the sebaceous gland?

C

This layer of epidermis is composed of a single row of cuboidal or columnar keratinocytes.

Stratum basale

Which of the following structures found in the skin plays an important role in thermoregulation?

Sweat glands

The process of keratinization involves

cells accumulating a tough fibrous protein that helps protect the skin.

You stepped on a nail. List the sequential layers (or strata) of the epidermis that the nail penetrated through to finally reach the dermis.

corneum, lucidum, granulosom, spinosum, basale

This layer of the skin is composed mainly of dense irregular connective tissue containing collagen and elastic fibers.

dermis

Which of the following terms refers to an inflammation of the skin characterized by patches of redness, blistering, and extreme itching

eczema

Which of the following terms refers to reddened, elevated, and itchy patches of skin commonly caused by emotional stress, physical trauma, or certain food allergies

hives

When a person's body becomes too warm, how does the integumentary system work with other body systems to maintain homeostasis?

increased secretion of perspiration helps cool the body

Keratin

is a protein

The stratum lucidum

is present only in thick skin