Drag The Labels Onto The Epidermal Layers.

Drag the labels onto the diagram to identify the basic structures of the epidermis-dermis junction.

Dermal papilla, Epidermal ridge, epidermis, dermis, basement membrane.

Drag the labels onto the epidermal layers.

stratum spinosum, stratum lucidum, epidermal ridge, stratum basale, basement membrane, dermis, dermal papilla, stratum granulosum, stratum corneum.

Each of the following is a function of the integumentary system except-

synthesis of vitamin C

The two components of the integumentary system are the-

cutaneous membrane and accessory structures

The type of cells that form the strata in the epidermis are-

keratinocytes

The tough superficial layer of the epidermis is known as the stratum-

corneum

The largest quantities of keratin are found in the epidermal layer called the stratum-

corneum

Water loss due to evaporation of fluid that has penetrated through the skin is called ________ perspiration.

insensible

The layer of the epidermis that contains several layers of living cells connected by abundant desmosomes is the stratum-

spinosum

Characteristics of the epidermis include-

flexible.
serves as UV radiation protection.
contains desmosomes.
multilayered.
All of the answers are correct.

All of the following are true of epidermal ridges except that they-

extend into the hypodermis

________ are cells in the epidermis that are part of the immune system.

dendritic cells

The epidermis of the skin is composed of what type of tissue?

keratinized stratified squamous epithelium

The layer of stem cells that constantly divide to renew the epidermis is the

stratum basale

Thin skin contains ________ epidermal layer(s) and thick skin contains ________ layers.

4;5

While walking barefoot on the beach, Joe stepped on a thorn that penetrated through the sole of his foot to the dermis. How many layers of epidermis did the thorn penetrate?

5

Which of following is not an accessory structure of the integumentary system?

dermis

The sensory cells associated with the deep layers of the epidermis are-

merkel cells

The layer of epidermis where most cells have stopped dividing and started making large amounts of keratin is the-

stratum granulosum

From what structure does sensible perspiration occur?

10

Which layer is the primary barrier against environmental hazards?

1

The layer of the skin that contains bundles of collagen and elastic fibers responsible for the strength of the skin is the ________ layer.

reticular

A surgical incision parallel to the lines of cleavage-

closes and heals with relatively little scarring.

The cutaneous plexus is-

a deep network of dermal arteries along the boundary of the reticular layer.

What are the dermal sensory structures that sense deep pressure?

lamellar corpuscle

Which layer of the dermis contains the capillaries, lymphatic vessels, and sensory nerve fibers that supply the epidermis?

papillary layer

Melanocytes __________.

store melanin in melanosomes

In which layer of the skin are melanocytes found? (Figure 5-8)

stratum basale

An albino individual lacks the ability to produce-

melanin

The ________ in keratinocytes protects the epidermis and dermis from the harmful effects of sunlight.

melanin

The pigment found in vegetables that can make the skin appear orange or yellow is called-

carotene

Drag the labels to the appropriate location in the figure.

hair shaft, sebaceous gland, arrector pili muscle, hair root, connective tissue sheath, root hair plexus

When the arrector pili muscles contract,-

"goose bumps" are formed.

Hair growth is due to the continual division of the basal cells of the __________.

hair matrix

Which of the following glands secrete a thick odorous secretion into the hair follicle?

apocrine

The ________ glands in the axilla become active at the time of puberty.

apocrine sweat

Sensible perspiration is produced by ________ glands.

merocrine sweat

Earwax is produced by ________ glands.

ceruminous

Which of the following happens if body temperature rises above normal?

blood flow to the skin increases

Which of the following is not a function of the exocrine sweat gland?

It conditions the surrounding skin with its lipid secretion.