Chapter 5 Review Questions

As you are walking down the beach, you see a dead, dry, shriveled-up fish. Which layer of your epidermis keeps you from drying out?

a. stratum corneum

Langerhans cells are commonly found in the ____.

a. stratum spinosum

In humans, exposure of the skin to sunlight is required for ____.

a. vitamin D synthesis

Sebaceous glands ____.

b. are associated with hair follicles

Eccrine sweater glands ____.

b. are present in the skin throughout the body and produce watery sweat

Similar to the hair, nails grow continuously throughout our lives. Which of the following is furthest from the nail growth center?

b. hyponychium

After a skin injury, the body initiates a wound-healing response. The first step of this response is the formation of a blood clot to stop bleeding. Which of the following would be the next response?

b. increased production of connective tissue

Collagen lends ________ to the skin.

b. structure

If you cut yourself and bacteria enter the wound, which of the following cells would help get rid of the bacteria?

c. Langerhans cells

Bedsores _______.

c. are preventable by eliminating pressure points

Which of the following is not a function of the hypodermis?

c. source of blood vessels in the epidermis

The hair matrix contains ____.

d. a layer of basal cells

An individual has spent too much time sun bathing. Not only is his skin painful to touch, but small blisters have appeared in the affected area. This indicates that he has damaged which layers of his skin?

d. epidermis and dermis

The papillary layer of the dermis is most closely associated with which layer of the epidermis?

d. stratum basale

In response to stimuli from the sympathetic nervous system, the arrestor pilli ____.

c. are responsible for goosebumps

In general, skin cancers _____.

c. can be reduced by limiting exposure to the sun

The papillary and reticular layers of the dermis are composed mainly of ____.

c. connective tissue

One of the functions of the integumentary system is protection. Which of the following does not directly contribute to that function?

c. folate production

Squamous cell carcinomas are the second most common of skin cancers and are capable of metastasizing if not treated. This cancer affects which cells?

c. keratinocytes of the stratum spinosum

An individual using a sharp knife notices a small amount of blood where he just cut himself. Which of the following layers of skin did he have to cut into in order to bleed?

c. papillary dermis