Ch. 5 Integumentary System

Each of the following is a function of the integumentary system except: A. excretion of salts and wastes. B. maintenance of body temperature. C. protection of underlying tissue. D. synthesis of vitamin C. E. detection of sensations.

The two components of the integumentary system are the: A. cutaneous membrane and accessory structures. B. epidermis and dermis. C. epidermis and superficial fascia. D. integument and hypodermis. E. cutaneous membrane and hypodermis.

The type of cells that form the strata in the epidermis are: A. keratinocytes. B. fibroblasts. C. adipocytes. D. melanocytes. E. dendritic cells.

The tough superficial layer of the epidermis is known as the stratum A. granulosum. B. basale. C. corneum. D. lucidum. E. spinosum.

The largest quantities of keratin are found in the epidermal layer called the stratum A. granulosum. B. basale. C. lucidum. D. spinosum. E. corneum.

Water loss due to evaporation of fluid that has penetrated through the skin is called ________ perspiration. A. inactive B. sensible C. latent D. active E. insensible

The layer of the epidermis that contains several layers of living cells connected by abundant desmosomes is the stratum A. lucidum. B. basale. C. corneum. D. granulosum. E. spinosum.

Characteristics of the epidermis include A. contains desmosomes. B. serves as UV radiation protection. C. flexible. D. multilayered. E. All of the answers are correct.

All of the following are true of epidermal ridges except that they A. cause ridge patterns on the surface of the skin. B. extend into the hypodermis. C. interconnect with the dermal papillae. D. increase surface area and friction on fingertips. E. produce patterns that are determined partially genetically.

________ are cells in the epidermis that are part of the immune system. A. Melanocytes B. Merkel cells C. Squamous cells D. Basal cells E. Dendritic cells

The epidermis of the skin is composed of what type of tissue? A. areolar connective tissue B. nonkeratinized stratified squamous epithelium C. keratinized stratified squamous epithelium D. transitional epithelium E. simple squamous epithelium

The layer of stem cells that constantly divide to renew the epidermis is the A. basal lamina. B. stratum corneum. C. stratum granulosum. D. stratum basale. E. papillary layer.

Thin skin contains ________ epidermal layer(s) and thick skin contains ________ layers. 3; 4 1; 2 5; 6 4; 5 2; 3

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? 1 2 3 4 5

Which of following is not an accessory structure of the integumentary system? A. dermis B. hair follicles C. exocrine glands D. sweat glands E. nails

The sensory cells associated with the deep layers of the epidermis are A. Pacinian corpuscles. B. Merkel cells. C. keratinocytes. D. Meissner's corpuscles. E. melanocytes.

The layer of epidermis where most cells have stopped dividing and started making large amounts of keratin is the A. stratum spinosum. B. stratum corneum. C. stratum basale. D. stratum lucidum. E. stratum granulosum.

The layer of the skin that contains bundles of collagen and elastic fibers responsible for the strength of the skin is the ________ layer. A. epidermal B. reticular C. subcutaneous D. hypodermal E. papillary

A surgical incision parallel to the lines of cleavage A. has a tendency to reopen. B. does not affect the healing process. C. heals slower than incisions made perpendicular to the lines of cleavage. D. closes and heals with relatively little scarring. E. requires no sutures.

The cutaneous plexus is A. a network of nerves in the cutaneous membrane. B. a deep network of dermal arteries along the boundary of the reticular layer. C. a network of arteries in the epidermis. D. a neural plexus responsible for deep pressure. E. a superficial network of dermal arteries.

What are the dermal sensory structures that sense deep pressure? A. lamellar corpuscle B. Merkel cells C. tactile corpuscles D. Meissner's corpuscles E. tactile dics

Which layer of the dermis contains the capillaries, lymphatic vessels, and sensory nerve fibers that supply the epidermis? A. reticular layer B. stratum basale C. papillary layer D. subcutaneous layer

Melanocytes __________. A. are not found in albino individuals B. are located in the stratum corneum C. store melanin in melanosomes D. manufacture melanin from the amino acid alanine

In which layer of the skin are melanocytes found? A. stratum lucidum B. stratum corneum C. stratum basale D. stratum spinosum E. stratum granulosum

An albino individual lacks the ability to produce A. perspiration. B. eleidin. C. carotene. D. melanin. E. keratin.

The ________ in keratinocytes protects the epidermis and dermis from the harmful effects of sunlight. A. carotene B. keratin C. hemoglobin D. melanin E. sebum

The pigment found in vegetables that can make the skin appear orange or yellow is called A. hemoglobin. B. carotene. C. melanin. D. cadmium. E. keratin.

When the arrector pili muscles contract, A. shivering occurs. B. "goose bumps" are formed. C. sweat is released from sweat glands. D. the skin changes color. E. hairs are shed.

Hair growth is due to the continual division of the basal cells of the __________. A. hair papilla B. hair matrix C. hair shaft D. hair root

Which of the following glands secrete a thick odorous secretion into the hair follicle? A. Structure and function of integumentary glands B. sebaceous C. apocrine D. ceruminous E. merocrine

The ________ glands in the axilla become active at the time of puberty. A. sebaceous B. apocrine sweat C. merocrine sweat D. ceruminous E. axillary

Sensible perspiration is produced by ________ glands. A. mammary B. apocrine sweat C. ceruminous D. merocrine sweat E. sebaceous

Earwax is produced by ________ glands. A. ceruminous B. merocrine sweat C. eccrine sweat D. apocrine sweat E. sebaceous

Which of the following happens if body temperature rises above normal? A. Sweat gland activity decreases. B. Blood flow to the skin increases. C. Evaporative cooling stops. D. Circulation in the skin decreases. E. The activity of melanocytes increases.

Which of the following is not a function of the exocrine sweat gland? A. It uses dermicidin as antibiotic protection. B. It conditions the surrounding skin with its lipid secretion. C. It interferes with adhesion of microorganisms. D. It cools the surface of the skin. E. It excretes electrolytes.